MORVAN JENNIFER (FR)
LORKOWSKI JAN (PL)
VANTHUYNE NICOLAS (FR)
JAZZAR RODOLPHE (US)
BERTRAND GUY (US)
ECOLE NAT SUPERIEURE DE CHIMIE DE RENNES (FR)
INSTITUT NAT DES SCIENCES APPLIQUEES (FR)
UNIV AIX MARSEILLE (FR)
UNIV RENNES (FR)
UNIV OF CALIFORNIA SAN DIEGO (US)
WO2022008946A1 | 2022-01-13 | |||
WO2022008656A1 | 2022-01-13 |
EP3936511A1 | 2022-01-12 |
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56 CLAIMS 1. A process for the preparation of an optically pure (+) or (–) enantiomer of 5 an iminium salt having the following formula (I): wherein: 10 - R1 is a (C6-C14)aryl group, a (C1-C6)alkyl group or a (C8-C20)cycloalkyl group, said aryl group being optionally substituted with at least one substituent chosen from the group consisting of: halogen, (C6-C10)aryl group, and (C1-C6)alkyl group, said alkyl group being optionally substituted with one or several phenyl group(s); 15 or R1 is a -NR’aR’b group, R’a and R’b being independently from each other selected from the group consisting of: H, (C1-C6)alkyl, and (C6-C10)aryl, or R’a and R’b form together with the nitrogen atom carrying them a N(CH2)2+m heterocyclyl ring, m being 0 or an integer comprised from 1 to 6; 20 - R2 is H, a (C6-C10)aryl group or a (C1-C6)alkyl group; - R3 is a (C1-C6)alkyl group; or R2 and R3 may together form, with the carbon atom carrying them, a (C3-C6)cycloalkyl; 25 - R5 is selected from the following groups: (C6-C20)aryl, (C1-C10)alkyl, and (C3- C12)cycloalkyl group, said alkyl group being optionally substituted with at least one substituent chosen from the (C6-C10)aryl groups, and said aryl group being optionally substituted with at least one substituent chosen 30 from the group consisting of: (C1-C6)alkyl, optionally substituted with one or several phenyl group(s), (C6-C10)aryl(C1-C6)alkyl, and (C6-C10)aryl, optionally substituted with one or several substituents, in particular selected in the group 57 consisting of: (C1-C6)alkylamino, di(C1-C6)alkylamino, (C1-C6)alkoxy, and (C1- C6)alkyl; - R6 is selected from the following groups: (C6-C20)aryl, (C1-C10)alkyl, (C3- 5 C12)cycloalkyl, heteroaryl, (C6-C10)aryl(C1-C6)alkyl, and heteroaryl(C1-C6)alkyl, said aryl group being optionally substituted with at least one substituent chosen from the group consisting of: (C1-C6)alkyl, optionally substituted with one or several phenyl group(s), (C6-C10)aryl(C1-C6)alkyl, and (C6-C10)aryl, optionally substituted with one or several substituents, in particular selected in the group10 consisting of: (C1-C6)alkylamino, di(C1-C6)alkylamino, (C1-C6)alkoxy, and (C1- C6)alkyl; with the proviso that R6 is different from R5; or R5 and R6, taken together with the carbon atom to which they are attached, form a five-, six-, or ten-membered cycloalkyl or heterocyclyl ring; 15 - R4 is H or a (C1-C6)alkyl group; - n is 0 or an integer comprised between 1 and 3; 20 or R3 and R5, taken together with the carbon atom to which they are attached, form a six-, seven- or eight-membered cycloalkyl ring; - X- is a counteranion, 25 said salt being in the form of an optically pure (+) or (–) enantiomer, said process comprising the following steps: a) a reduction step of an iminium salt having the following formula (II), said salt being in the form of a racemic mixture: 30 R1, R2, R3, R4, R5, R6, n, and X- are as defined above in formula (I), 58 in order to obtain a compound having the formula (III): R1, R2, R3, R4, R5, R6, and n are as defined above in formula (I), said compound of formula (III) being in the form of a racemic mixture, 5 b) a step of chiral HPLC separation of the compound of formula (III) in the form of a racemic mixture, for obtaining an optically pure (+) or (-) enantiomer compound having the formula (IV): R1, R2, R3, R4, R5, R6, and n are as defined above in formula (I), 10 said compound of formula (IV) being in the form of an optically pure (+) or (–) enantiomer, c) an oxidation step of the compound of formula (IV) for obtaining the compound of formula (I), d) and optionally a counteranion exchange step. 15 2. The process of claim 1, wherein the reduction step is carried out with a reduction agent selected from the group consisting of: LiAlH4, NaBH4, diisobutylaluminium hydride, lithium triethylborohydride, sodium bis(2- methoxyethoxy)aluminium hydride, and cyanoborohydrides. 20 3. The process of claim 1 or 2, wherein the oxidation step is carried out with a oxidation agent selected from the group consisting of: Br2, N-bromosuccinimide, I2, N-iodosuccinimide, Cl2, a copper(II) compound, a hypervalent iodine compound such as 2-iodoxybenzoic acid, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tetra-N- 25 butylammonium iodide, and tert-butyl hydroperoxide. 4. The process of any one of claims 1 to 3, wherein R1 is a (C6-C10)aryl group substituted with at least one substituent chosen from the (C1-C6)alkyl groups, 59 preferably a phenyl group substituted with two alkyl groups, such as methyl, isopropyl or ethyl groups, and/or wherein R2 is a (C1-C6)alkyl group such as a methyl group. 5. The process of any one of claims 1 to 4, wherein R2 and R3 are identical, 5 and are preferably a methyl group. 6. The process of any one of claims 1 to 4, wherein R2 and R3 are different, R3 being preferably a (C1-C6)alkyl group such as a methyl group and R3 being preferably H or a (C6-C10)aryl group such as a phenyl group. 10 7. The process of any one of claims 1 to 6, wherein R4 is H. 8. The process of any one of claims 1 to 7, wherein R5 and R6 are different and selected from the following groups: (C6-C10)aryl such as phenyl or naphthyl, (C1- 15 C6)alkyl such as methyl, and (C3-C6)cycloalkyl such as cyclohexyl, said aryl group being optionally substituted with two substituents selected from the (C1-C6)alkyl groups. 9. An optically pure (+) or (–) enantiomer of an iminium salt having the 20 following formula (I): wherein: 25 - R1 is a (C6-C14)aryl group, a (C1-C6)alkyl group or a (C8-C20)cycloalkyl group, said aryl group being optionally substituted with at least one substituent chosen from the group consisting of: halogen, (C6-C10)aryl group, and (C1-C6)alkyl group, said alkyl group being optionally substituted with one or several phenyl group(s); 30 or R1 is a -NR’aR’b group, R’a and R’b being independently from each other selected from the group consisting of: H, (C1-C6)alkyl, and (C6-C10)aryl, or R’a 60 and R’b form together with the nitrogen atom carrying them a N(CH2)2+m heterocyclyl ring, m being 0 or an integer comprised from 1 to 6; - R2 is H, a (C6-C10)aryl group or a (C1-C6)alkyl group; 5 - R3 is a (C1-C6)alkyl group; or R2 and R3 may together form, with the carbon atom carrying them, a (C3-C6)cycloalkyl; - R5 is selected from the following groups: (C6-C20)aryl, (C1-C10)alkyl, and (C3- 10 C12)cycloalkyl group, said alkyl group being optionally substituted with at least one substituent chosen from the (C6-C10)aryl groups, and said aryl group being optionally substituted with at least one substituent chosen from the group consisting of: (C1-C6)alkyl, optionally substituted with one or 15 several phenyl group(s), (C6-C10)aryl(C1-C6)alkyl, and (C6-C10)aryl, optionally substituted with one or several substituents, in particular selected in the group consisting of: (C1-C6)alkylamino, di(C1-C6)alkylamino, (C1-C6)alkoxy, and (C1- C6)alkyl; 20 - R6 is selected from the following groups: (C6-C20)aryl, (C1-C10)alkyl, (C3- C12)cycloalkyl, heteroaryl, (C6-C10)aryl(C1-C6)alkyl, and heteroaryl(C1-C6)alkyl, said aryl group being optionally substituted with at least one substituent chosen from the group consisting of: (C1-C6)alkyl, optionally substituted with one or several phenyl group(s), (C6-C10)aryl(C1-C6)alkyl, and (C6-C10)aryl, optionally 25 substituted with one or several substituents, in particular selected in the group consisting of: (C1-C6)alkylamino, di(C1-C6)alkylamino, (C1-C6)alkoxy, and (C1- C6)alkyl; with the proviso that R6 is different from R5; or R5 and R6, taken together with the carbon atom to which they are attached, 30 form a five-, six-, or ten-membered cycloalkyl or heterocyclyl ring; - R4 is H or a (C1-C6)alkyl group; - n is 0 or an integer comprised between 1 and 3, and is preferably 1; 35 61 or R3 and R5, taken together with the carbon atom to which they are attached, form a six-, seven- or eight-membered cycloalkyl ring; - X- is a counteranion, 5 said salt being in the form of an optically pure (+) or (–) enantiomer. 10. The use of the compound of formula (I) as defined in any one of claims 1 to 9 as a catalyst. 10 11. The use of the compound of formula (I) as defined in any one of claims 1 to 9 as a catalyst, in combination with a transition metal other than ruthenium. 12. The use of the compound of formula (I) as defined in any one of claims 1 15 to 9 as a catalyst, in combination with a transition metal selected from the group consisting of: gold, copper, and rhodium. 13. The use of the compound of formula (I) as defined in any one of claims 1 to 9, in combination with a transition metal, in an organic light-emitting diode. 20 14. The use of claim 13, wherein the transition metal is selected from the group consisting of: gold, copper, and rhodium. 15. An organic light emitting device (OLED) comprising: an anode; a cathode; 25 and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound of formula (I) as defined in any one of claims 1 to 9, in combination with a transition metal selected from the group consisting of Ru, Os, Ir, Pd, Pt, Cu, Ag, and Au, and can be bonded to other ligands. 30 |
20 EXAMPLES PREPARATION OF THE COMPOUNDS OF THE INVENTION 5 General information All reactions and subsequent manipulations were performed under an argon atmosphere in an MBraun glovebox or using standard Schlenk techniques, if not stated otherwise. 1 H and 13 C{ 1 H} NMR spectra were recorded on a Varian 400 or 10 Bruker Avance 400 at 25 o C. 1 H NMR chemical shifts are reported relative to TMS (δ in ppm) and were referenced via residual proton resonances of the corresponding deuterated solvent (CHCl3: 7.26 ppm; C6D5H: 7.16 ppm) whereas 13 C{ 1 H} NMR spectra are reported relative to TMS using the natural-abundance carbon resonances (CDCl3: 77.16 ppm; C6D6: 128.0 ppm). Coupling constants are given in Hertz. 15 CAAC salt reduction to form H2 adducts (corresponding to step a) of the process according to the invention for the preparation of compounds of formula (III) according to the invention) 20 General procedure: In a Schlenk tube under argon, lithium aluminum hydride (2 equiv) was slowly added to a solution of iminium salt (1.0 equiv) in a THF at 0°C and received suspension was further stirred at room temperature overnight. Reaction mixture was then quenched with mixture of hydrated MgSO4 and silica and then passed through a short pad of silica which was further washed with Et2O. Evaporation 25 of the combined organic fractions gives desired CAAC-H2 adducts as white sticky solids in typical yield of 90%. Analytical data: 30 21 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.41 – 7.31 (m, 4H), 7.28 – 7.20 (m, 2H), 7.16 (ddd, J = 17.0, 7.5, 2.0 Hz, 2H), 4.01 (d, J = 8.4 Hz, 1H), 3.91 (p, J = 6.9 Hz, 1H), 3.50 (d, J = 8.6 Hz, 1H), 3.37 (p, J = 6.8 Hz, 1H), 2.54 (d, J = 12.7 Hz, 1H), 2.30 (dd, J = 12.7, 0.8 Hz, 1H), 1.63 (s, 3H), 1.30 (d, J = 6.9 Hz, 3H), 1.26 (s, 3H), 1.16 (t, J = 5 6.8 Hz, 6H), 1.08 (d, J = 6.8 Hz, 3H), 1.05 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ = 152.3, 152.3, 150.7, 138.4, 128.2, 126.5, 126.0, 125.6, 124.1, 123.8, 65.8, 62.7, 54.4, 45.1, 32.2, 29.7, 29.4, 28.4, 28.2, 26.7, 26.6, 23.1, 22.8. 10 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.91 – 7.82 (m, 3H), 7.80 (d, J = 1.9 Hz, 1H), 7.56 – 7.44 (m, 3H), 7.30 – 7.23 (m, 1H), 7.22 (dd, J = 7.7, 2.1 Hz, 1H), 7.17 (dd, J = 7.3, 2.1 Hz, 1H), 4.14 (d, J = 8.4 Hz, 1H), 3.94 (hept, J = 6.9 Hz, 1H), 3.63 (d, J = 15 8.4 Hz, 1H), 3.42 (hept, J = 6.8 Hz, 1H), 2.71 (d, J = 12.7 Hz, 1H), 2.40 (d, J = 12.7 Hz, 1H), 1.73 (s, 3H), 1.35 (d, J = 6.9 Hz, 3H), 1.31 (s, 3H), 1.21 (d, J = 6.9 Hz, 3H), 1.17 (d, J = 6.8 Hz, 3H), 1.11 (d, J = 6.8 Hz, 3H), 1.08 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ = 152.3, 152.3, 147.9, 138.5, 133.4, 131.8, 127.9, 127.9, 127.5, 126.6, 125.9, 125.5, 125.3, 124.1, 123.8, 123.6, 65.9, 20 62.9, 54.6, 45.3, 32.0, 29.7, 29.5, 28.4, 28.3, 26.8, 26.7, 23.2, 22.9. 25 1 H NMR (400 MHz, 25°C, CDCl 3 ): δ = 8.27 – 8.18 (m, 1H), 7.96 – 7.87 (m, 1H), 7.82 – 7.72 (m, 1H), 7.53 – 7.42 (m, 4H), 7.29 – 7.19 (m, 2H), 7.15 (dd, J = 7.0, 2.5 Hz, 1H), 4.34 (d, J = 8.6 Hz, 1H), 4.06 (hept, J = 6.9 Hz, 1H), 3.85 (d, J = 8.6 Hz, 1H), 3.34 (hept, J = 6.9 Hz, 1H), 2.84 (d, J = 12.6 Hz, 1H), 2.67 (d, J = 12.5 Hz, 1H), 1.94 22 (s, 3H), 1.39 – 1.32 (m, 6H), 1.23 (d, J = 6.8 Hz, 3H), 1.17 (d, J = 6.8 Hz, 3H), 1.08 (s, 3H), 1.00 (d, J = 6.8 Hz, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ =.2, 152.1, 146.6, 138.7, 134.9, 131.5, 129.5, 127.2, 126.6, 126.2, 125.2, 125.0, 124.9, 124.2, 123.8, 123.6, 67.2, 62.4, 56.1, 5 46.0, 31.2, 29.7, 28.8, 28.6, 28.2, 26.7, 26.3, 23.3, 22.9. 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.28 – 7.14 (m, 3H), 6.99 – 6.94 (m, 2H), 10 6.91 (qd, J = 1.6, 0.9 Hz, 1H), 4.01 (d, J = 8.3 Hz, 1H), 3.99 – 3.91 (m, 1H), 3.49 (d, J = 8.3 Hz, 1H), 3.40 (hept, J = 6.8 Hz, 1H), 2.55 (d, J = 12.7 Hz, 1H), 2.37 (s, 6H), 2.30 (d, J = 12.6 Hz, 1H), 1.64 (s, 3H), 1.32 (d, J = 6.9 Hz, 3H), 1.28 (s, 3H), 1.19 (dd, J = 12.0, 6.8 Hz, 6H), 1.12 (d, J = 6.8 Hz, 3H), 1.08 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 152.3, 152.3, 150.9, 138.5, 137.6, 15 127.3, 126.5, 124.1, 123.8, 123.7, 65.9, 62.7, 54.3, 44.9, 32.3, 29.8, 29.5, 28.5, 28.1, 26.8, 26.6, 23.2, 22.8, 21.6. Compound 5 20 1 H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.25 – 7.18 (m, 1H), 7.18 – 7.12 (m, 2H), 3.88 (hept, J = 6.9 Hz, 1H), 3.56 – 3.41 (m, 2H), 3.01 (d, J = 8.3 Hz, 1H), 1.91 (d, J = 12.7 Hz, 1H), 1.86 – 1.67 (m, 5H), 1.54 – 1.46 (m, 1H), 1.36 – 1.25 (m, 10H), 1.22 (s, 4H), 1.20 (s, 4H), 1.17 (d, J = 6.8 Hz, 4H), 1.09 (d, J = 6.7 Hz, 7H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = δ 152.4, 152.1, 138.9, 126.3, 123.9, 25 123.7, 66.6, 62.6, 55.2, 49.9, 43.5, 29.7, 29.2, 28.8, 28.7, 28.5, 27.9, 27.2, 27.1, 26.9, 26.6, 26.6, 23.2, 22.9, 22.1. 23 Compound 6 Diastereoisomeric ratio of starting iminium salt range between 90/10 to 75/25 and are the same in the product. 5 Analytical data are given for a Major Dia 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.25 – 7.19 (m, 2H), 7.18 – 7.12 (m, 2H), 7.09 (m, 3H), 7.00 (dd, J = 7.5, 2.0 Hz, 1H), 3.67 (hept, J = 6.9 Hz, 1H), 3.21 (dd, J = 8.8, 2.8 Hz, 1H), 2.99 (hept, J = 6.8 Hz, 1H), 2.79 (q, J = 7.3 Hz, 1H), 2.50 (dd, J = 8.7, 1.7 Hz, 1H), 2.30 – 2.15 (m, 1H), 2.05 (dd, J = 12.6, 10.9 Hz, 1H), 1.92-1.83 (m, 10 2H), 1.81 – 1.71 (m, 2H), 1.75 – 1.56 (m, 1H), 1.30 (d, J = 7.2 Hz, 3H), 1.28 – 1.21 (m, 6H, overlapping signals), 1.09 (d, J = 6.9 Hz, 3H), 0.64 (s, 3H), 0.63 (d, J = 6.8 Hz, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 151.8, 151.5, 143.9, 143.0, 129.4, 127.6, 126.2, 126.1, 124.1, 123.5, 55.7, 51.3, 47.9, 42.5, 38.7, 35.5, 31.2, 28.5, 27.6, 15 26.4, 25.7, 24.8, 24.6, 24.5, 23.6, 17.3, 14.1. Diastereoisomeric ratio: 75/25 20 1 H NMR (400 MHz, 25°C, CDCl 3 ): δ =7.54 – 7.47 (m, 2H), 7.47 – 7.35 (m, 3H), 7.33 – 7.24 (m, 2H), 7.24 – 7.07 (m, 7H), 6.99 – 6.87 (m, 2H), 4.23 (p, J = 6.9 Hz, 0H), 4.14 (d, J = 9.2 Hz, 1H), 4.10 (d, J = 8.6 Hz, 0H), 3.67 – 3.42 (m, 2H), 3.15 (d, J = 12.8 Hz, 1H), 2.82 (td, J = 13.2, 6.2 Hz, 2H), 2.47 (dd, J = 13.1, 0.8 Hz, 0H), 2.16 (p, J = 6.8 Hz, 0H), 1.80 (s, 1H), 1.73 (s, 1H), 1.56 (s, 2H), 1.44 (d, J = 7.0 Hz, 1H), 25 1.32 – 1.24 (m, 5H), 1.24 – 1.18 (m, 1H), 1.14 (d, J = 6.8 Hz, 3H), 1.00 (d, J = 6.8 Hz, 2H), 0.85 (d, J = 6.7 Hz, 1H), 0.30 (d, J = 6.8 Hz, 2H), 0.16 (d, J = 6.7 Hz, 1H). 24 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 152.3, 151.9, 151.2, 150.8, 150.1, 146.2, 146.0, 140.1, 138.8, 128.5, 128.3, 127.8, 127.6, 126.7, 126.7, 126.6, 126.1, 126.0, 125.9, 125.8, 125.7, 124.2, 123.9, 123.7, 123.6, 68.0, 67.9, 65.9, 52.0, 45.3, 33.8, 32.9, 30.6, 29.2, 28.8, 28.2, 28.0, 26.8, 26.8, 26.7, 26.2, 25.6, 23.7, 23.0, 21.5, 5 21.1. Diastereoisomeric ratio: 55/45 10 1 H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.42 – 7.30 (m, 4H), 7.30 – 7.20 (m, 2H), 7.20 – 7.07 (m, 2H), 4.10 – 3.93 (m, 1H), 3.85 (d, J = 8.1 Hz, 1H), 3.83 – 3.74 (m, 1H), 3.71 (d, J = 8.4 Hz, 0H), 3.64 (p, J = 6.9 Hz, 1H), 3.46 (dd, J = 8.3, 0.9 Hz, 1H), 3.44 – 3.37 (m, 1H), 2.99 (p, J = 6.8 Hz, 0H), 2.75 (dd, J = 12.7, 8.7 Hz, 0H), 2.34 (dd, J = 11.7, 5.4 Hz, 1H), 2.10 (dd, J = 11.7, 9.0 Hz, 1H), 1.95 (ddd, J = 12.7, 5.0, 0.9 Hz, 15 0H), 1.67 (s, 1H), 1.58 (s, 2H), 1.32 – 1.27 (m, 4H), 1.27 – 1.22 (m, 2H), 1.21 – 1.14 (m, 5H), 1.12 (t, J = 6.6 Hz, 3H), 0.97 (d, J = 6.0 Hz, 2H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ =.2, 151.0, 150.5, 150.2, 150.2, 149.9, 140.6, 139.7, 128.3, 128.2, 126.5, 126.4, 126.0, 125.9, 125.7, 125.7, 124.6, 124.0, 123.7, 123.5, 66.9, 66.8, 58.1, 57.0, 49.1, 46.8, 45.9, 45.3, 31.8, 30.5, 27.9, 27.8, 20 27.5, 27.4, 25.6, 25.5, 24.8, 24.7, 24.2, 24.2, 23.9, 23.6, 22.3, 20.5. 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.41 – 7.31 (m, 4H), 7.26 – 7.21 (m, 1H), 25 7.17 (d, J = 5.3 Hz, 2H), 7.12 (dd, J = 5.5, 4.0 Hz, 1H), 3.98 (d, J = 8.4 Hz, 1H), 3.49 (d, J = 8.3 Hz, 1H), 3.17 (dq, J = 15.0, 7.5 Hz, 1H), 2.86 – 2.65 (m, 2H), 2.60 – 2.47 (m, 2H), 2.27 (dd, J = 12.7, 0.9 Hz, 1H), 1.64 (s, 3H), 1.27 – 1.20 (m, 6H), 1.19 – 1.11 (m, 3H), 1.02 (s, 3H). 25 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 150.7, 147.6, 147.5, 140.3, 128.2, 127.1, 126.6, 126.0, 125.9, 125.6, 65.3, 63.4, 54.5, 45.2, 32.2, 29.9, 29.2, 25.5, 25.4, 16.3, 16.2. 5 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.88 – 7.81 (m, 3H), 7.78 (d, J = 2.1 Hz, 1H), 7.54 – 7.41 (m, 3H), 7.18-7.16 (m, , 2H), 7.14 – 7.10 (m, 1H), 4.09 (d, J = 8.6 Hz, 1H), 3.60 (d, J = 8.6 Hz, 1H), 3.25 – 3.12 (m, 1H), 2.89 – 2.68 (m, 2H), 2.64 (d, J = 10 12.7 Hz, 1H), 2.59 – 2.45 (m, 1H), 2.36 (d, J = 12.7 Hz, 1H), 1.71 (s, 3H), 1.27 (t, J = 7.6 Hz, 3H, overlapping)1.27 (s, 3H, overlapping).1.14 (t, J = 7.5 Hz, 3H), 1.02 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 148.0, 147.7, 147.6, 140.5, 133.5, 131.9, 128.0, 128.0, 127.6, 127.2, 126.8, 126.2, 126.1, 125.6, 125.5, 123.8, 65.5, 15 63.6, 54.8, 45.5, 32.1, 29.9, 29.4, 25.7, 16.5. 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 8.24 – 8.18 (m, 1H), 7.92 – 7.87 (m, 1H), 20 7.75 (dd, J = 6.7, 2.8 Hz, 1H), 7.49 – 7.42 (m, 4H), 7.21 – 7.15 (m, 2H), 7.11 (dd, J = 6.7, 2.8 Hz, 1H), 4.27 (d, J = 8.6 Hz, 1H), 3.85 (d, J = 8.6 Hz, 1H), 3.33 – 3.20 (m, 1H), 2.83 – 2.70 (m, 2H, overlapping), 2.79 (d, J = 12.7 Hz, 1H, overlapping), 2.63 (d, J = 12.6 Hz, 1H), 2.53 (dq, J = 15.0, 7.6 Hz, 1H), 1.35 (s, 3H), 1.29 (t, J = 7.6 Hz, 3H), 1.09 (t, J = 7.5 Hz, 3H), 1.04 (s, 3H). 25 13 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 147.7, 147.4, 146.9, 140.6, 135.0, 131.6, 129.6, 127.4, 127.3, 126.8, 126.4, 126.2, 125.4, 125.2, 125.0, 123.8, 66.8, 63.0, 56.2, 46.2, 31.3, 30.0, 28.8, 25.7, 25.6, 16.4, 16.3. 26 1H NMR (400 MHz, 25°C, CDCl 3 ): 7.16 – 7.08 (m, 3H), 3.40 (d, J = 8.3 Hz, 1H), 3.14 – 3.05 (m, 1H), 2.98 (d, J = 8.3 Hz, 1H), 2.91 – 2.81 (m, 1H), 2.69 – 2.58 (m, J = 5 2H), 1.88 – 1.73 (m, 4H), 1.69 (m, 2H), 1.54 – 1.46 (m, 1H), 1.30 – 1.10 (m, 9H, overlapping) 1.21 (s, 3H, overlapping), 1.21 (t, 3H, J = 7.6 Hz overlapping), 1.18 (s, 3H, overlapping), 1.17 (t, J = 7.5 Hz, 3H, overlapping) 1.04 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 147.9, 147.5, 140.9, 127.1, 126.6, 125.9, 66.3, 63.4, 55.3, 50.1, 43.7, 30.3, 29.1, 28.8, 28.6, 27.3, 27.2, 27.0, 25.8, 25.3, 10 22.3, 16.4, 16.3. 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.18 – 7.10 (m, 7H), 3.51 (d, J = 8.5 Hz, 15 1H), 3.10 (d, J = 8.5 Hz, 1H), 3.07 – 2.95 (m, 2H), 2.96 – 2.88 (m, 1H), 2.87 – 2.78 (m, 2H), 2.73 – 2.56 (m, 2H), 2.08 (d, J = 12.8 Hz, 1H), 1.76 (d, J = 12.7 Hz, 1H), 1.29 – 1.23 (m, 12H), 1.17 (t, J = 7.6 Hz, 2H, overlapping), 1.16 (s, 3H, overlapping),1.13 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl 3 ): δ = 147.7, 147.4, 146.5, 140.7, 137.2, 20 130.4, 126.9, 126.8, 126.0, 65.6, 63.6, 54.8, 48.2, 41.7, 33.8, 29.6, 29.3, 27.5, 25.6, 25.5, 24.2, 16.4, 16.4. 27 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.42 – 7.30 (m, 4H), 7.28 – 7.19 (m, 1H), 6.95 (s, 1H), 6.89 (s, 1H), 4.01 (d, J = 8.3 Hz, 1H), 3.41 (d, J = 8.3 Hz, 1H), 2.48 (d, 1H, J = 11.6 Hz, overlapping), 2.47 (s, 3H), 2.30 (s, 3H), 2.28 (s, 3H), 2.25 (d, J = 11.6 Hz, 1H), 1.66 (s, 3H), 1.31 (s, 3H), 1.11 (s, 3H). 5 13 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ = 150.9, 141.3, 140.9, 139.6, 135.0, 130.2, 129.7, 128.3, 126.1, 125.7, 64.1, 63.9, 54.6, 45.0, 32.3, 30.1, 29.5, 21.1, 20.9, 20.9. 10 Diastereoisomeric ratio of starting iminium salt is 1/1 but product is received in 4/1 mixture. Analytical data are given for a Major Dia 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 7.48 – 7.41 (m, 2H), 7.40 – 7.33 (m, 3H), 15 7.32 – 7.26 (m, 2H), 7.26 – 7.20 (m, 3H), 7.04 (s, 1H), 7.02 (s, 1H), 4.25 (d, J = 8.3 Hz, 1H), 3.55 (d, J = 8.3 Hz, 1H), 2.37 (s, 3H), 2.35 (s, 3H), 2.30 (d, J = 12.6 Hz, 1H), 1.97 (d, J = 12.6 Hz, 1H), 1.45 (s, 3H), 1.00 (s, 3H), 0.60 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ = 151.5, 146.2, 144.1, 140.9, 138.5, 135.0, 132.2, 130.4, 130.3, 128.4, 127.5, 126.3, 125.9, 125.7, 65.1, 64.4, 54.1, 45.09, 20 32.4, 30.5, 28,5, 21.7, 20.9. 25 28 Chiral resolution: Analytical chiral HPLC separation data (corresponding to step b) of the process according to the invention for the preparation of compounds of formula (IV) according to the invention) 5 Analytical chiral HPLC separation for compound 1 The sample is dissolved in hexane, injected on the chiral column, and detected10 with an UV detector at 220 nm and a circular dichroism detector at 254 nm. The flow- rate is 1 mL/min. Semi-preparative separation for compound 1: 15 • Sample preparation: About 160 mg of compound 1 are dissolved in 1.8 mL of hexane. • Chromatographic conditions: Lux-Cellulose-4 (250 x 10 mm), hexane as mobile phase, flow-rate = 5 mL/min, UV detection at 254 nm. • Injections (stacked): 45 times 40 µL, every 2.8 minutes. 20 • First fraction: 72 mg of the first eluted enantiomer with ee > 99.5% (45% yield). 29 • Second fraction: 72 mg of the second eluted enantiomer with ee > 96% (45% yield). • Intermediate: 12 mg 5 Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578 and 546 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 10 Preparative separation for compound 1: • Sample preparation: about 2.54 g of compound 2 are dissolved in 30 mL of hexane. 15 • Chromatographic conditions: Lux-Cellulose-2 (250 x 10 mm), thermostated at 30°C in an oven, hexane / 2-PrOH (99.9/0.1) as mobile phase, flow-rate = 5 mL/min, UV detection at 254 nm • Injections (stacked): 600 times 50 mL, every 1.5 minutes, collection of two fractions. 20 • The first fraction (er 98/2) is dissolved in 16 mL of hexane and was purified again. Injections (stacked): 64 times 250 mL, every 2.5 minutes, to obtain 1.09 g of the first eluted enantiomer ((+)-(R)-Compound 1) with ee > 99.5% 30 • The second fraction (er 7/93) is dissolved in 14 mL of hexane and was purified again. Injections (stacked): 700 times 20 mL, every 1.5 minutes, to obtain 1.22 g of the second eluted enantiomer ((-)-(S)-Compound 1) with ee > 98.5% 5 Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 10 Structures of (+)-(R)-Compound 1 (from first fraction) and (-)-(S)-Compound 1 (from second fraction) were determined by single crystal X-ray diffraction. Analytical chiral HPLC separation for compound 2 15 The sample is dissolved in ethanol, injected on the chiral column, and detected with an UV detector at 254 nm. The flow-rate is 0.5 mL/min. 20 31 Preparative separation for compound 2 • Sample preparation: about 360 mg of compound 2 are dissolved in 150 mL of ethanol. 5 • Chromatographic conditions: Lux-Cellulose-3 (250 x 10 mm), ethanol as mobile phase, flow-rate = 2 mL/min, UV detection at 310 nm. • Injections (stacked): 185 times 800 µL, every 8 minutes. • First fraction: 160 mg of the first eluted enantiomer ((+)-R-compound 2) with 10 ee > 99%, 44% yield • Second fraction: 160 mg of the second eluted enantiomer ((-)-S-compound 2) with ee > 99%, 44% yield 15 Impurity: 12 mg Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C 20 with a Peltier controlled cell holder. 32 Analytical chiral HPLC separation for compound 3 5 The sample is dissolved in ethanol, injected on the chiral column, and detected with an UV detector at 254 nm. The flow-rate is 0.5 mL/min. 10 Preparative separation for compound 3 • Sample preparation: About 320 mg of compound 3 are dissolved in 15 mL of ethanol. • Chromatographic conditions: Lux-Cellulose-3 (250 x 10 mm), ethanol as mobile 15 phase, flow-rate = 2 mL/min, UV detection at 310 nm. • Injections (stacked): 60 times 250 µL, every 6 minutes. After collection and evaporation of the first intermediate fraction: 28 times 250 µL, every 5 minutes. After evaporation of the second intermediate fraction: 20 times 250 µL, every 5 20 minutes 33 • First fraction: 152 mg of the first eluted enantiomer ((-)-S-compound 3) with ee > 99%, 48% yield • Second fraction: 152 mg of the second eluted enantiomer ((+)-R-compound 3) 5 with ee > 98.5%, 48% yield Impurity: 15 mg Optical rotations 10 Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 15 Analytical chiral HPLC separation for compound 4 34 The sample is dissolved in ethanol, injected on the chiral column, and detected with an UV detector at 254 nm and a circular dichroism detector at 254 nm. The flow- rate is 1 mL/min. 5 Semi-preparative separation for compound 4: • Sample preparation: About 234 mg of compound 4 are dissolved in 3.6 mL of hexane. 10 • Chromatographic Lux-Cellulose-2 (250 x 10 mm), hexane / 2-PrOH 99.9/0.1 as mobile phase, flow-rate = 5 mL/min, 30°C, UV detection at 290 nm. • Injections (stacked): 90 times 40 µL, every 2.4 minutes. 15 • First fraction: 108 mg of the first eluted enantiomer ((+)-(R)-compound 4) with ee > 99.5% • Second fraction: (127 mg, er 7/93) is dissolved in 2 mL of hexane and was purified again. Injections (stacked): 50 times 40 µL, every 2.4 minutes, to obtain 106 20 mg of the second eluted enantiomer ((-)-(S)-compound 4) with ee > 98% 35 Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 5 Analytical chiral HPLC separation for compound 6 10 Analytical chiral HPLC separation for compound 6 • The sample is dissolved in heptane / 2-PrOH, injected on the chiral column, Lux-Cellulose-2 and detected with an UV detector at 230 nm, a circular dichroism detector at 254 nm. The flow-rate is 1 mL/min. 15 36 Preparative separation for compound 6 • Sample preparation: About 100 mg of compound 6 are dissolved in 10 mL of 5 hexane. • Chromatographic conditions: Lux-Cellulose-2 (250 x 10 mm), hexane / 2-PrOH (99.9/0.1) as mobile phase, flow-rate = 5 mL/min, UV detection at 290 nm. • Injections (stacked): 200 times 50 ^^L, every 5 minutes. 10 • First fraction: 25 mg with ee > 99.5 % (“Main” 1) • Second fraction: 14 mg “mino”) • Third fraction: 28 mg with ee > 99.5% (“Main” 2) 15 • Intermediate: 17 mg Optical rotations 20 Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 37 Analytical chiral HPLC separation for compound 9 5 The sample is dissolved in ethanol, injected on the chiral column, and detected with an UV detector at 254 nm and a circular dichroism detector at 254 nm. The flow- rate is 0.5 mL/min. 10 Semi-preparative separation for compound 9: • Sample preparation: About 160 mg of compound 9 are dissolved in 2 mL of 15 ethanol. 38 • Chromatographic conditions: Lux-Cellulose-3 (250 x 10 mm), ethanol as mobile phase, flow-rate = 2 mL/min, UV detection at 254 nm. • Injections (stacked): 25 times 80 µL, every 4 minutes. 5 • First fraction: 69 mg of the first eluted enantiomer ((+)-(R)-compound 9) with ee > 99.5% (43 % yield) • Second fraction: 76 mg of the second eluted enantiomer ((-)-(S)-compound 9) with ee > 97% (48% yield) 10 • Intermediate: 14 mg Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen 15 lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 39 Analytical chiral HPLC separation for compound 13 5 • The sample is dissolved in ethanol, injected on the chiral column Lux- Cellulose-3, and detected with an UV detector at 254 nm. The flow-rate is 0.5 mL/min. 10 Preparative separation for compound 13: • Sample preparation: About 182 mg of compound 13 are dissolved in 7 mL of ethanol. • Chromatographic conditions: Lux-Cellulose-3 (250 x 10 mm), methanol as mobile phase, flow-rate = 3 mL/min, UV detection at 254 nm. 15 • Injections (stacked): 35 times 200 ^^L, every 8 minutes. • First fraction: 83 mg of the first eluted enantiomer with ee > 99.5 % • Second fraction: 81 mg of the second eluted enantiomer with ee > 99.5% 20 Intermediate: 11 mg 40 Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C 5 with a Peltier controlled cell holder. Analytical chiral HPLC separation for compound 14 10 • The sample is dissolved in heptane / 2-PrOH, injected on the chiral column Lux-Cellulose-2, and detected with an UV detector at 230 nm and a polarimetric detector. The flow-rate is 1 mL/min. 15 41 Preparative separation for compound 14: • Sample preparation: About 127 mg of compound 14 are dissolved in 8 mL hexane 5 • Chromatographic conditions: Lux-Cellulose-2 (250 x 10 mm), hexane / 2-PrOH (99.9/0.1) as mobile phase, flow-rate = 5 mL/min, UV detection at 290 nm. • Injections (stacked): 45 times 180 µL, every 5.25 minutes. • First fraction: 54 mg with ee > 99.5 % 10 • Second fraction: 53 mg with ee > 99.5 % Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen 15 lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C with a Peltier controlled cell holder. 42 Analytical chiral HPLC separation for compound 15 5 • The sample is dissolved in heptane / 2-PrOH, injected on the chiral column, Lux-Cellulose-2 and detected with an UV detector at 230 nm and a polarimetric detector. The flow-rate is 1 mL/min. 10 Preparative separation for compound 15: • Sample preparation: About 80 mg of compound 15 are dissolved in 10 mL of hexane. • Chromatographic conditions: Lux-Cellulose-2 (250 x 10 mm), hexane / 2-PrOH (99.9/0.1) as mobile phase, flow-rate = 5 mL/min, UV detection at 290 nm. 15 • Injections (stacked): 67 times 150 ^^L, every 9 minutes. • First fraction: 38 mg with ee > 99.5 % • Second fraction: 41 mg with ee > 99.5 % 20 43 Optical rotations Optical rotations were measured on a Jasco P-2000 polarimeter with a halogen lamp (589, 578, 546, 436, 405 and 365 nm), in a 10 cm cell, thermostated at 25°C 5 with a Peltier controlled cell holder. CAAC-H 2 adduct oxidation to obtain the CAAC.BF 4 iminium salt (corresponding to step c) of the process according to the invention for the 10 preparation of compounds of formula (I) according to the invention) General procedure: In a Schlenk tube under argon enantiopure CAAC-H2 adducts were dissolved in dry DCM. Received solution was then cooled down in an ice bath to 0°C and bromine (3 equiv) was added dropwise. Reaction mixture was then brought to RT and stirred overnight. Then water solution of KBF4 (6 equiv) and 15 Na2S2O3 (3 equiv) was then added and resulting biphasic mixture was stirred for an hour. Phases were then separated and water phase was additionally washed with extra DCM. Combined organic phases were dried over anhydrous MgSO4 and filtered. Remaining solution was then reduced to ca.5 ml and an excess of Et2O was added causing precipitation of white solid. Filtration and copious washing of the precipitate 20 with Et2O and pentane afforded cyclic iminium salt BF4 in typical yield of 85% as white solids. 44 Structures of compounds isolated and analysed by NMR for which study of single crystals by means of X-ray diffractometry allowed for determination of absolute configuration. 5 Compound 16 (-)-(R)-Compound-16 (received from (+)-(R)-Compound 1) and its enantiomer 10 (+)-(S)-Compound-16 (received from (-)-(S)-Compound 1) have identical spectra 1H NMR (500 MHz, 25°C, CD 3 CN): δ: 9.26 (s, 1H), 7.64 (t, J= 7.5 Hz 1H,), 7.55 (t, J= 7.5 Hz, 2H), 7.52 (d, , J= 7.5 Hz, 1H), 7.48 (d, J= 7.5 Hz, 2H), 7.45 (d, J= 7.5 Hz, 2H), 3.10 (d, J= 14.0 Hz, 1H), 2.82 (d, J= 14.0 Hz, 1H), 2.79 (sept, J= 7.0 Hz, 1H), 2.55 (sept, J= 7.0 Hz, 1H), 1.93 (s, 3H), 1.58 (s, 3H), 1.40 (s, 3H), 1.39 (d, J= 7.0 Hz, 15 3H), 1.25 (d, J= 7.0 Hz, 3H), 1.15 (d, J= 7.0 Hz, 3H), 1.08 (d, J= 7.0 Hz, 3H). 1 3 C NMR (125 MHz, CD3CN): δ: 189.8, 145.7, 145.4, 142.0, 133.2, 130.8, 130.0, 129.6, 126.7, 126.6, 126.6, 85.3, 55.7, 48.6, 29.9, 29.7, 27.2, 26.8, 26.8, 25.6, 25.5, 21.5, 21.4. 1 1 B NMR (128 MHz, CDCl3): δ: -0.98. 20 19 F NMR (376 MHz, CDCl3): δ: -151.0 (small), 151.1 Compounds have opposite [ ^]D = (-)-(R)-Compound-16 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl 3 ) = -22.0 (+)-(S)-Compound-16 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = +22.1 25 Compound 17 (-)-(R)-Compound-17 (received from (+)-(R)-Compound 2) and its enantiomer (+)-(S)-Compound-17 (received from (-)-(S)-Compound 2) have identical spectra. 45 1H NMR (300 MHz, CD 3 CN) δ: ppm) 9.72 (s, 1H), 8.06 (d, J= 8.1 Hz, 1H), 7.89- 7.97 (m, 3H), 7.58-7.66 (m, 4H), 7.51 (d, J= 8.1 Hz, 1HHz), 7.47 (d, J= 8.1 Hz, 1H), 3.22 (d, J= 14.1 Hz, 1H), 2.88 (d, J= 14.1 Hz, 1H), 2.83 (sept, J= 6.6 Hz, 1H), 2.60 (sept, J= 6.6 Hz, 1H), 2.01 (s, 3H), 1.60 (s, 3H), 1.41 (d, J= 6.6 Hz, 3H), 1.40 (s, 3H), 5 1.21 (d, J= 6.6 Hz, 3H), 1.19 (d, J= 6.6 Hz, 3H), 1.15 (d, J= 6.6 Hz, 3H) 1 3 C NMR (125 MHz, CD3CN) δ: 190.4, 145.7, 145.4, 139.7, 134.2, 133.7, 133.1, 130.8, 130.1, 128.9, 128.7, 128.2, 128.1, 126.7, 126.5, 125.6, 124.4, 85.3, 55.9, 48.5, 29.9, 29.7, 27.4, 26.9, 26.9, 25.7, 25.6, 21.6, 21.5. 1 1 B NMR (128 MHz, CDCl3) δ: -0.91. 10 19 F NMR (376 MHz, CDCl3): δ: - 150.9 (small), - 151.0. Compounds have opposite [ ^]D = (-)-(S)-Compound-16 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = -239.2 (+)-(R)-Compound-16 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = +241.8 15 Compound 18 (+)-(R)-Compound-18 (received from (+)-(R)-Compound 3) and its enantiomer (-)-(S)-Compound-18 (received from (-)-(S)-Compound 3) have identical spectra: 1H NMR (400 MHz, CDCl3) δ: 9.89 (s, 1H), 8.03 (d, J= 8.0 Hz, 1H), 7.91 (d, J=20 8.0 Hz, 1H), 7.80 (d, J= 8.0 Hz, 1H), 7.61 (t, J= 7.5 Hz, 1H), 7.52-7.55 (m, 2H), 7.33- 7.38 (m, 4H), 3.30 (d, J= 14.0 Hz, 1H), 3.19 (d, J= 14.0 Hz, 1H), 2.70 (sept, J= 6.5 Hz, 1H), 2.69 (sept, J= 6.5 Hz, 1H), 2.15 (s, 3H), 1.54 (s, 3H), 1.37 (d, J= 6.5 Hz, 3H), 1.31 (d, J= 6.5 Hz, 3H), 1.25 (s, 3H), 1.23 (d, J= 6.5 Hz, 3H), 1.20 (d, J= 6.5 Hz, 3H). 1 3 C NMR (125 MHz, CDCl3) δ: 191.6, 145.3, 144.3, 138.3, 135.8, 132.6, 130.5, 25 130.1, 129.3, 129.3, 127.2, 126.6, 126.0, 126.0, 125.6, 124.8, 123.5, 84.0, 55.8, 50.0, 30.0, 29.4, 28.1, 26.9, 26.9, 25.9, 25.6, 22.3, 22.0. 1 1 B NMR (128 MHz, CDCl3) δ: -0.91. 1 9 F NMR (376 MHz, CDCl3) δ: ppm) -150.9 (small), - 151.0. 30 Compounds have opposite [ ^]D = (-)-(S)-Compound-18 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = -21.3 (+)-(R)-Compound-18 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = +22.2 46 Compound 19 (-)-(R)-Compound-19 (received from (+)-(R)-Compound 4) and its enantiomer 5 (+)-(S)-Compound-19 (received from (-)-(S)-Compound 4) have identical spectra: 1H NMR (500 MHz, CDCl 3 ) δ: 9.59 (s, 1H), 7.51 (t, J= 7.5 Hz, 1H), 7.34 (d, J= 7.5 Hz, 1H), 7.29 (d, J= 7.5 Hz, 1H), 7.06 (s, 2H), 6.97 (s, 1H), 3.16 (d, J= 14.0 Hz, 1H), 2.67 (sept, J= 6.5 Hz, 1H), 2.66 (d, J= 14.0 Hz, 1H), 2.39 (sept, J= 6.5 Hz, 1H), 2.31 (s, 6H), 1.87 (s, 3H), 1.52 (s, 3H), 1.35 (d, J= 6.5 Hz, 3H), 1.31 (s, 3H), 1.18 (d, 10 J= 6.5 Hz, 3H), 1.16 (d, J= 6.5 Hz, 3H), 1.12 (d, J= 6.5 Hz, 3H). 1 3 C NMR (125 MHz, CDCl 3 ) δ: 191.0, 145.2, 144.6, 141.2, 140.1, 132.4, 130.5, 129.3, 125.8, 123.6, 83.6, 55.3, 48.5, 30.0, 29.1, 28.7, 27.0, 26.4, 25.9, 25.7, 22.2, 21.9, 21.2. 1 1 B NMR (128 MHz, CDCl 3 ) δ: -0.99. 15 19 F NMR (376 MHz, CDCl3): δ: ^ppm) -151.2 (small), - 151.3. Compounds have opposite [α]D = (-)-(S)-Compound-19 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = -71.4 (+)-(R)-Compound-19 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = +71.5 20 Compound 20 (-)-(R)-Compound-20 (received from (+)-(R)-Compound 9) and its enantiomer (+)-(S)-Compound-20 (received from (-)-(S)-Compound 9) have identical spectra: 25 1 H NMR (500 MHz, CDCl 3 ) δ: 9.55 (s, 1H), 7.47 (t, J= 7.5 Hz, 2H), 7.44 (d, J= 7.5 Hz, 2H), 7.42 (d, J= 7.5 Hz, 1H), 7.33 (t, J= 7.5 Hz, 1H), 7.31 (d, J= 7.5 Hz, 1H), 7.24 (d, J= 7.5 Hz, 1H), 3.16 (d, J= 14.0 Hz, 1H), 2.67 (d, J= 14.0 Hz, 1H), 2.55 (q, J= 47 7.5 Hz, 2H), 2.33 (dt, J= 7.5 Hz, 1H), 2.16 (dt, J= 7.5 Hz, 1H), 1.91 (s, 3H), 1.52 (s, 3H), 1.31 (s, 3H), 1.26 (t, J= 7.5 Hz, 3H), 1.09 (t, J= 7.5 Hz, 3H). 1 3 C NMR (125 MHz, CDCl3) δ: 190.5, 141.0, 140.2, 139.7, 131.8, 131.0, 130.3, 128.9, 128.3, 128.1, 126.0, 83.8, 55.5, 48.3, 28.9, 26.9, 26.6, 24.8, 24.6, 15.3, 14.5. 5 11 B NMR (128 MHz, CDCl3) δ: -0.98. 1 9 F NMR (376 MHz, CDCl3): δ: -151.0 (small), -151.1 Compounds have opposite [ ^]D = (-)-(S)-Compound-20 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = -59.7 (+)-(R)-Compound-20 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = +60.3 10 Structures of (+)-(R)-Compound 16, (+)-S-Compund-16, (-)-(R)-Compound 17, (+)-S-Compound 18, (-)-R-Compound 18, (-)-(R)-Compound 19 and (-)-(R)- Compound 20 were determined by single crystal X-ray diffraction. Structures of compounds isolated and analysed by NMR for which 15 enantiomers were assigned as (+) or (-) based on sign of their optical rotation. Compound 21 (+)-Compound 21 and (-)-Compound 21 were received from (+) or (-)-Compound 6 20 1H NMR (400 MHz, 25°C, acetone-d6): δ = 8.82 (s, 1H), 7.48 (t, J = 7.8 Hz, 1H), 7.42 – 7.29 (m, 5H), 7.27 – 7.22 (m, 1H), 7.18 (dd, J = 7.8, 1.5 Hz, 1H), 3.77 (q, J = 7.2 Hz, 1H), 3.47 (q, J = 7.0 Hz, 1H), 2.93 – 2.79 (m, 2H), 2.72 (m, 1H), 2.67 – 2.60 (m, 1H), 2.51 – 2.40 (m, 1H), 1.76 – 1.58 (m, 5H), 1.47 (d, J = 7.2 Hz, 3H), 1.38 (d, J 25 = 6.8 Hz, 3H), 1.24 (d, J = 6.7 Hz, 3H), 1.22 – 1.18 (m, 7H), 0.34 (d, J = 6.8 Hz, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, acetone-d6): δ = 190.6, 143.7, 143.5, 141.0, 135.7, 132.1, 129.7, 129.3, 128.0, 125.7, 125.7, 70.5, 66.0, 51.9, 44.0, 39.0, 35.9, 33.0, 30.2, 28.9, 25.6, 25.4, 24.1, 23.4, 22.6, 21.7, 20.5, 15.4, 13.5. 30 11 B NMR (128 MHz, CDCl 3 ) δ: -0.90. 1 9 F NMR (376 MHz, CDCl 3 ): δ: -152.7 (small), -152.8 48 (-)-Compound-21 (T = 25 °C, c = 0.101 g/mL, L = 10 cm, acetonitrile) = - 87.4 (+)-Compound-21 (T = 25 °C, c = 0.103 g/mL, L = 10 cm, acetonitrile) = + 87.1 5 Compound 22 (+)-Compound 22 and (-)-Compound 22 were received from (+) or (-)- Compound 13. 10 1H NMR (400 MHz, 25°C, CDCl 3 ): δ = 9.38 (s, 1H), 7.45 (t, J = 7.7 Hz, 1H), 7.35 – 7.29 (m, 3H), 7.27 – 7.21 (m, 3H), 3.75 (d, J = 14.0 Hz, 1H), 2.93 (sept, J = 6.9 Hz, 1H), 2.86 (d, J = 14.0 Hz, 1H), 2.72 (d, J = 13.7 Hz, 1H), 2.51 (q, J = 7.5 Hz, 2H), 2.27 (d, J = 13.7 Hz, 1H), 1.89 – 1.78 (m, 5H), 1.45 (s, 3H), 1.32 (d, J = 7.4 Hz, 3H), 1.26 15 (dd, J = 6.9, 1.8 Hz, 6H), 1.11 (t, J = 7.5 Hz, 3H), 0.98 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, CDCl3): δ = 192.5, 148.4, 139.8, 139.4, 133.4, 131.2, 130.5, 130.4 (2C), 127.6 (2C), 127.2 (2C), 83.0, 54.5, 44.4, 43.6, 33.8, 28.1, 27.9, 27.4, 24.7, 24.4, 24.0, 24.0, 15.3, 14.9. 20 1 1 B NMR (128 MHz, CDCl3) δ: -0.89. 1 9 F NMR (376 MHz, CDCl3): δ: -151.1 (small), 151.2. (-)-Compound-22 (T = 25 °C, c = 0.120 g/mL, L = 10 cm, CHCl3) = - 65.7 25 (+)-Compound- 22 (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CHCl3) = + 64.8 49 Compound 23 5 (+)-Compound 23 and (-)-Compound 23 were received from (+) or (-)- Compound 14. 1H NMR (400 MHz, 25°C, acetone-d 6 ): δ = 9.71 (s, 1H), 7.65 (m, 2H), 7.50 (m, 2H), 7.44 – 7.35 (m, 1H), 7.18 (s, 1H), 7.14 (s, 1H), 3.23 (d, J = 13.9 Hz, 1H), 2.94 (d, 10 J = 14.1 Hz, 1H), 2.37 (s, 3H), 2.31 (s, 3H), 2.17 (s, 3H), 2.01 (s, 3H, overlapping with acetone), 1.70 (s, 3H), 1.52 (s, 3H). 1 3 C{ 1 H} NMR (100 MHz, 25°C, acetone-d 6 ): δ = 190.8, 142.4, 134.8, 134.4, 131.2, 131.1, 130.5, 129.1, 126.7, 85.6, 56.1, 49.1, 28.6, 27.7, 27.4, 20.7, 19.4. 1 1 B NMR (128 MHz, acetone-d6) δ: -0.93. 15 19 F NMR (376 MHz, acetone-d6 δ: -151.2 (small), -151.3 (-)-Compound-23 (T = 25 °C, c = 0.120 g/mL, L = 10 cm, acetonitrile) = -67.5 (+)-Compound-23 (T = 25 °C, c = 0.122 g/mL, L = 10 cm, acetonitrile) = + 68.3 Compound 24 20 (+)-Compound 24 and (-)-Compound 24 were received from (+) or (-)- Compound 15. Diastereoisomeric ratio of starting amine is 4/1 and iminium salt is received in 25 same ratio 1H NMR (400 MHz, 25°C, CDCl3): δ = 9.85 (s, 1H), 7.53 (m, 2H), 7.47 – 7.28 (m, 7H), 7.20 – 6.95 (m, 3H), 2.96 (d, J = 13.9 Hz, 1H), 2.36 (s, 3H), 2.09 (s, 3H), 2.06 (d, J = 13.9 Hz, 1H), 1.76 (s, 3H), 1.23 (s, 3H), 0.81 (s, 3H). (analytical data given for 50 major isomer, aromatic region is hard to define as signals for two diastereomers overlap). 1 3 C{ 1 H} NMR (100 MHz, 25°C, acetone-d6): δ = 191.5, 191.4, 142. 7, 142.6, 141.9, 141.2, 139.4, 139.3, 139.1, 138.7, 135.7, 135.5, 132.9, 132.9, 131.9, 131.8, 5 131.1, 130.7, 130.7, 130.6, 130.1, 129.7, 129.4, 129.4, 127.3, 126.9, 85.9, 85.7, 56.3, 56.1, 49.3, 48.8, 29.0, 28.7, 27.9, 27.6, 27.3, 27.1, 21.0, 19.5, 19.5. (analytical data given for mixture of diasteroisomers) 1 1 B NMR (128 MHz, acetone-d6) δ: -0.89 1 9 F NMR (376 MHz, acetone-d6): δ: -151.2 (small), -151.3 10 (-)-Compound-24 (T = 25 °C, c = 0.141 g/mL, L = 10 cm, acetonitrile) = - 40.1 (+)-Compound-24 (T = 25 °C, c = 0.136 g/mL, L = 10 cm, acetonitrile) = + 39.3 Complexation of CAAC iminium salt to prove the ee conservation 15 Procedure for the (-)-(S)-Ru complex: In a glove box, (+)-(S)-compound 19 (2.5 equiv) was dissolved in dry and degassed Toluene (0.5 mL). KHMDS (0.5 M in Toluene, 2.5 equiv) was added. The mixture was allowed to stirred 1 min at 40°C. Then, M10 catalyst (1 equiv) and toluene (0.5 mL) were then added. The mixture was 20 stirred 5 min at 40°C. CuCl (4.5 equiv), Styrenyl ether (1.6 equiv) and Toluene (0.5 mL) were added. The mixture was stirred at 80°C for 30 min out of the box. Volatiles were removed under vacuum and the product was purified by column chromatography (eluent: toluene). Green fraction was washed with pentane. 25 The desired complex is obtained as a green solid (61% yield) as a mixture of rotamers (ratio determined by 1 H NMR in CDCl 3 : 76:24). 51 1H NMR (400 MHz, , CDCl 3 ): δ 17.78 (s, 0.23H), 16.45 (s, 0.77H), 8.45 (d, J = 9.1 Hz, 1H), 8.23 (s, 1H), 7.75 – 7.38 (m, 8H), 6.98 (d, J = 9.0 Hz, 1H), 5.15 – 4.97 (m, 1H), 3.30 – 3.07 (m, 1H), 2.86 – 2.64 (m, 2H), 2.63 – 2.48 (m, 2H), 2.48 – 2.24 5 (m, 4H), 1.69 – 1.50 (m, 6H), 1.50 – 1.28 (m, 8H), 1.19 – 1.01 (m, 3H), 0.98 – 0.74 (m, 3H). 1 3 C NMR (101 MHz, CDCl 3 ): δ: 295.1, 260.6, 156.5, 143.5, 143.2, 142.6, 138.2, 132.1, 129.5, 129.4, 128.7, 128.6, 127.6, 127.4, 127.1, 125.4, 118.2, 113.2, 78.4, 63.2, 48.4, 31.1, 29.7, 27.6, 25.6, 24.2, 22.2, 14.8, 14.3. 10 [ ^] D = (-)-(S)-ruthenium complex (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CH 2 Cl 2 ) = -565. Analytical data for this compound were consistent with the previously reported 15 data. Analytical chiral HPLC for (-)-(S)-Ru complex The sample is dissolved in dichloromethane, injected on the chiral column Chiralpak IE, and detected with an UV detector at 254 nm and a circular dichroism 20 detector at 254 nm. The flow-rate is 1 mL/min, Heptane/Ethanol/dichloromethane (60/20/20) ee determination: 98% 52 > 99.5% ee 98% ee Procedure for the Au and Cu complexes preparation: In a glovebox, a 100 mL Schlenk flask equipped with a magnetic stirring bar and 5 a septum was charged with (+)-(R)-Compound-14 (100.0 mg, 0.23 mmol, 1.0 eq), copper(I) chloride (25.0 mg, 0.25 mmol, 1.1 eq) and sodium acetate (56.5 mg, 0.69 mmol, 3.0 eq). Toluene (11 mL) was added, and the reaction vessel was brought outside of a glovebox. Septum was then change for a glass stopcock with a metal clipper and the reaction mixture was stirred overnight at 110 ° C in a close system. After 10 cooling down to RT, the suspension was opened to air, filtered through a silica gel column, and washed with dichloromethane. The pure (+)-(R)-copper complex (86.7 mg, 0.2 mmol) was obtained as a white powder (Isolated mass = 86.7 mg, Yield = 87%) 1H NMR (400 MHz, CDCl 3 ) δ: 7.57 – 7.46 (m, 2H), 7.46 – 7.31 (m, 3H), 7.31 – 15 7.19 (m, 3H), 2.86 (m 2H), 2.58 (d, J = 13.4 Hz, 1H), 2.32 (d, J = 13.4 Hz, 1H), 1.82 (s, 3H), 1.38 – 1.30 (m, 12H), 1.26 (d, J = 6.7 Hz, 3H), 1.21 (s, 3H). 1 3 C NMR (101 MHz, CDCl 3 ):): δ: 13 C NMR (101 MHz, CDCl 3 ) δ 246.8, 145.9, 145.1, 144.8, 134.5, 129.9, 129.0, 127.2, 126.3, 124.9, 124.9, 81.2, 60.9, 51.4, 29.2, 20 29.2, 28.2, 28.1, 27.2, 27.2, 22.5, 22.4. [ ^] D = (+)-(R)-copper complex (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CH 2 Cl 2 ) = +20 Analytical chiral HPLC for Cu complex 25 ee determination: The sample is dissolved in dichloromethane, injected on the chiral column Chiralpak IG, and detected with an UV detector at 254 nm and a circular dichroism detector at 254 nm. The flow-rate is 1 mL/min Heptane/Isopropanol/dichloromethane (80/10/10), 1 mL/min. ee >99.5% 53 In a glovebox, a Schenck was charged with the (R)-copper complex (23.6 mg, 0.055 mmol, 1.0 eq), [(SMe2)AuCl] (24.2 mg, 0.082 mmol, 1.5 eq), and THF (0.5 mL). The mixture was then heated at 40 degrees for 4 hours. Solvent was removed under 5 reduced pressure and the crude was purified by column chromatography (dichloromethane). The received solid was filtered over packed celite to remove any nanoparticles. (R)-gold complex (19.9 mg, 0.035 mmol) was obtained as a white solid (19.9 mg, 64 % yield). 1H NMR (400 MHz, CD2Cl2): δ: 7.59 – 7.53 (m, 2H), 7.51 (d, J = 7.7 Hz, 1H), 10 7.48 – 7.39 (m, 2H), 7.39 – 7.29 (m, 3H), 2.96 (hept, J = 6.8 Hz, 1H), 2.84 (hept, J = 6.7 Hz, 1H), 2.65 (d, J = 13.4 Hz, 1H), 2.45 (d, J = 13.4 Hz, 1H), 1.92 (s, 3H), 1.46 (d, J = 2.4 Hz, 3H), 1.45 (d, J = 2.4 Hz, 3H), 1.42 (s, 3H), 1.36 (d, J = 6.7 Hz, 3H), 1.33 (d, J = 6.8 Hz, 3H), 1.29 (s, 3H). 1 3 C NMR (101 MHz, CD2Cl2) δ: 234.6, 145.8, 145.6, 145.3, 134.7, 130.5, 129.3, 15 127.7, 126.9, 125.6, 125.4, 81.1, 61.4, 52.4, 29.8, 29.6, 28.9, 28.6, 28.5, 27.1, 26.9, 23.1, 22.8. [ ^]D = (+)-(R)-gold complex (T = 25 °C, c = 0.153 g/mL, L = 10 cm, acetonitrile) = +24 As preliminary photophysical and chiroptical characterizations, the unpolarized 20 (black solid line) and circularly polarized luminescence (CPL) of the enantiopure copper complexes ((R) and (S), blue and red solid lines, respectively, with an average glum value of 10 -3 ) were measured using a CPL spectrofluoropolarimeter. The samples were excited using a 90° geometry with a Xenon ozone-free lamp 150 W LS. The following parameters were used: emission slit width ≈ 2 mm, integration time = 4 sec, 25 scan speed = 50 nm/min, accumulations = 5. The concentration of all the samples was ~ . 10 -5 M. Excitation of the samples were performed at 320 nm. The corresponding results are shown in Figures 1 and 2. Analytical chiral HPLC for Au complex 30 ee determination: The sample is dissolved in dichloromethane, injected on the chiral column Chiralpak IG, and detected with an UV detector at 254 nm and a circular dichroism detector at 254 nm. The flow-rate is 1 mL/min Heptane/Isopropanol/dichloromethane (80/10/10), 1 mL/min. ee >98% 35 54 5 Procedure for the (+)-(S)-Rh complex: [Rh(COD)Cl] 2 (36.3 mg, 0.074 mmol, 0.5 equiv.), (-)-(S)-Compound-14 (75 mg, 0.172 mmol, 1.2 equiv.) and KHMDS (39.2 mg, 0.197 mmol, 1.3 equiv.) were added to a Schlenk tube in the glovebox. Out of the box under Ar atmosphere, dry and degassed THF (3 mL) was added dropwise over 10 min to the solids at -78°C. The 10 suspension was stirred for 10 min at -78°C, after which the cooling bath was removed, and the reaction mixture was allowed to warm up to rt. After stirring for 16 h at room temperature, volatiles were removed under vacuum. The product was purified by column chromatography (pentane/diethyl ether = 9:1) to recived yellow-orange solid of (+)-(S)-Rh complex (44.9 mg 51% yield) 15 1 H NMR (400 MHz, CDCl 3 ): 7.99 (d, J = 7.3 Hz, 2H), 7.41 (dt, J = 17.2, 7.6 Hz, 4H), 7.29 (d, J = 7.2 Hz, 1H), 7.11 (dd, J = 7.5, 1.8 Hz, 1H), 5.32 (m, 1H), 4.52 (m, 1H), 3.87 (m, 1H), 2.86 (d, J = 13.3 Hz, 1H), 2.65 (m, 2H), 2.51 – 2.40 (m, 1H), 2.38 (s, 3H), 2.07 (d, J = 13.2 Hz, 1H), 1.91 (m, 1H), 1.75 (d, J = 6.4 Hz, 3H), 1.66 (s, 3H), 1.66 – 1.49 (m, 3H), 1.48 – 1.38 (m, 2H), 1.35 (s, 3H), 1.29 (two pairs of d overlaping, 20 6H), 1.24 – 1.07 (m, 2H), 0.72 (d, J = 6.7 Hz, 3H). 1 3 C NMR (101 MHz, CDCl3): 269.23 (d, J = 46.7 Hz), 147.98, 146.11, 145.89, 136.57, 129.00, 128.50, 128.11, 126.59, 126.53, 124.15, 101.81 (d, J = 5.8 Hz), 98.00 (d, J = 6.4 Hz), 78.67, 78.65, 72.11 (d, J = 14.6 Hz), 66.37 (d, J = 14.0 Hz), 49.03, 35.16, 33.29, 31.28, 30.16, 28.84, 28.58, 28.56, 26.27, 25.52, 25.28, 24.58. 25 [α]D = (+)-(S)-Rhodium complex (T = 25 °C, c = 0.110 g/mL, L = 10 cm, CH2Cl2) = +5 55 Analytical chiral HPLC for Rh complex ee determination: The sample is dissolved in dichloromethane, injected on the chiral column Chiralpak IB N-5, and detected with an UV detector at 254 nm and a 5 circular dichroism detector at 254 nm. The flow-rate is 1 mL/min. ee>99%