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JP3020980B2 |
NEW MATERIAL:Compounds of formula I (R1 is H or OH-protecting group; R2 is 1-4C alkyl, 1-4C alkenyl, 1-4C alkynyl or phenyl; R3 is OH, R4 is H, R3 and R4 together form epoxy; Steric configuration at chiral center C marked with * is alter...
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JP3010816B2 |
A process for separating optical isomers in a simulated moving bed system, comprising introducing a solution containing an optical isomer mixture and a desorbing liquid into a packed bed containing an optical resolution packing therein a...
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JP3010756B2 |
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JP2000044506A |
To provide a novel compound that is an ether including a cycloalkyl moiety bearing a specific bonding group, has excellent stability and safety and is useful as a perfume of a floral type. This compound is selected from compounds represe...
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JP2000038361A |
To obtain an unsaturated fluorinated alcohol in an industrially advantageous way by reaction of a specific fluorinated α-olefin with water in the presence of a solid acid catalyst so as to easily separate the reaction product from the s...
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JP3004361B2 |
Aldehydes, ketones, esters and lactones may be reduced using a reductant system consisting of a silane derivative and a metal hydride to give good yields of the corresponding alcohols. The reductant system used in the method enables pref...
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JP2000026344A |
To obtain the subject compound useful as an intermediate for the synthesis of an indolidine derivative as a therapeutic agent for hypertrophy of prostate by reducing a specific (isobutylphenyl)butan-one in the presence of a specific ruth...
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JP2000026345A |
To reduce the loss of a catalyst in producing an alkadienol having a structure of adding water to a dimer of a conjugated alkadiene by reacting the conjugated alkadiene with water in the presence of a catalyst consisting of a palladium c...
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JP2000026339A |
To obtain the subject novel compound, useful as a synthetic intermediate for producing functional materials, electronic materials, catalyst ligands, medicines and agrochemicals that comprises compounds having a lot of substituents in aro...
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JP3001944B2 |
This invention provides oxygen or sulfur containing compounds possessing fruity, floral, or woody odors. These compounds may be used to fragrance or flavor a variety of consumer products such as tobacco products, foodstuffs, beverages, g...
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JP2000500480A |
PCT No. PCT/FR96/01854 Sec. 371 Date Feb. 22, 1999 Sec. 102(e) Date Feb. 22, 1999 PCT Filed Nov. 22, 1996 PCT Pub. No. WO97/19038 PCT Pub. Date May 29, 1997The subject-matter of the present invention is a process of use in perfluoroalkyl...
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JPH11349503A |
To obtain the subject composition useful for paints, etc., by introducing the trans isomer of a specific olefin-based diol to reduce an equilibrium surface tension. This trans olefin-based diol having surfactant characteristics contains ...
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JPH11514290A |
PCT No. PCT/BE96/00108 Sec. 371 Date Jul. 13, 1998 Sec. 102(e) Date Jul. 13, 1998 PCT Filed Oct. 10, 1996 PCT Pub. No. WO97/14500 PCT Pub. Date Apr. 24, 1997The invention relates to a chiral solid catalyst containing a BEA topology zeoli...
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JPH11335385A |
To obtain the subject new compound industrially useful as a catalyst for hydrogen transfer type reductive reaction. This new compound is expressed by the formula (R is H, methyl or the lie; M is Rh, Ir or Co; R1 is methanesulfonyl, trifl...
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JPH11322649A |
To obtain in a high yield, an optically active alcohol at a high enantiomer excess ratio using a small amount of a catalyst by the hydrogen- transfer type asymmetric reduction of a specific ketone by a specific amount of formic acid as a...
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JPH11319576A |
To convert 1-alkyen into aldehyde or 1-alcohol efficiently by incorporating a metal complex capable of forming a vinylidene complex in a catalyst for reaction for converting 1-alkyne to aldehyde or 1-alcohol. A catalyst used for the reac...
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JPH11322636A |
To produce a cyclopropylacetylene derivative on an industrial scale at a low cost in high efficiency by the reverse ethynylation reaction of a specific cyclopropyl propinol derivative. A cyclopropylacetylene derivative of formula II is p...
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JPH11513373A |
PCT No. PCT/EP96/04027 Sec. 371 Date Jan. 27, 1998 Sec. 102(e) Date Jan. 27, 1998 PCT Filed Sep. 13, 1996 PCT Pub. No. WO97/11044 PCT Pub. Date Mar. 27, 1997Solids are separated from aqueous 1,4-butynediol solutions by passing a solids-c...
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JP2977885B2 |
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JP2974658B2 |
To obtain the subject new compound useful for application to treatment of diseases especially dermatological diseases, rheumatic diseases and diseases in respiratory and circulatory organs and ophthalmological diseases or a cosmetic comp...
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JP2970470B2 |
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JP2968823B2 |
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JPH11292809A |
To provide a simple, inexpensive and extremely selective method for continuously producing pure dimethylvinylcarbinol(DMVC) from prenol provided with a high space time yield. (a) The formation of a liquid two-phase mixture in a reactiona...
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JPH11292810A |
To produce the subject compound in high yield by reacting a cyclic vinyl ether with a Grignard reagent in the presence of a tiarylphosphine and a specific amount of a nickel compound. (A) A cyclic vinyl ether represented by formula I [(n...
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JP2966094B2 |
This invention relates to asymmetric syntheses in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active product.
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JP2963910B2 |
A retroviral protease inhibiting compound of the formula A - X - B or a pharmaceutically acceptable salt, prodrug or ester thereof, wherein X is a linking group; A is (1) substituted amino, (2) substituted carbonyl, (3) functionalized im...
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JP2965610B2 |
Substituted biphenyls can be prepared by reduction of appropriate ketones and, if appropriate, subsequent hydrolysis, cyclization, hydrogenation and separation of isomers. The substituted biphenyls can be used as active compounds in medi...
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JP2961921B2 |
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JP2962668B2 |
To safety obtain the subject compound useful as a synthetic raw material for medicines and a liquid crystal material, etc., in high yield and optical purity by ready operation without requiring hydrogen by subjecting a carbonyl compound ...
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JPH11279089A |
To provide a method for simply hydrolyzing an ester without using a mineral acid or an alkali and without problems of environmental pollution. An acetic ester of the formula ROCOCH3 or an ester of formic acid of the formula ROCOH (R is a...
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JP2959785B2 |
Disclosed are novel classes of anti-androgens including dihydrophenanthrene derivatives, their method of synthesis and their use in treating disorders associated with excessive androgenic activities.
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JP2960547B2 |
A process for purifying vitamin A consisting of heating a vitamin A preparation in an inert atmosphere, at a temperature below 170 DEG C. and a pressure of less than 4 mm of mercury, said heating taking place in a vessel shielded from li...
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JPH11511176A |
Disclosed is an improved process for the preparation of 1,4-butenediol by the hydrolysis of 3,4-epoxy-1-butene (EpB) wherein a mixture of EpB and water is contacted with a catalyst comprising a catalyst support material an copper in a po...
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JPH11255685A |
To produce a propargyl alcohol derivative useful as an important intermediate for medicines, agrochemicals, etc., by reacting a trichlorofluorinated methane with a carbonyl compound and further reacting the resultant product with the car...
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JPH11255686A |
To produce 9-fluorenylmethanol at a low cost by using an inexpensive saturated hydrocarbon as a solvent. Fluorene is suspended in a solvent of a saturated hydrocarbon and tetramethylethylenediamine is then added thereto. A solution of bu...
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JPH11246454A |
To provide a method for producing an unsaturated alcohol eluting a small amount of a catalyst component in high yield and high selectivity. An alkyl or an alkenyl ester of an unsaturated fatty acid or a triglyceride having a long-chain a...
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JPH11246452A |
To provide a method for preparing benzyl alcohol by hydrolysis of a benzyl ester in the liquid phase with water in which the hydrolysis is carried out in the absence of a strong acid and a base at 40-320°C temperature. A benzyl ester to...
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JP2946654B2 |
Process for producing a propargylcarbinol compound of general formula (I): where R<1> and R<2> independently represent hydrogen; C1-C15 alkyl which may be substituted with one or more halogen, hydroxyl, phenyl, phenoxy, phenyl or phenoxy...
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JP2941433B2 |
1-Bromo-3-chloro-1,2-diaryl-2-propanols of the general formula I (I) where n and m are each 1, 2 or 3, and R1 and R2 are each hydrogen, haloalkyl, alkoxy, haloalkoxy, t-butyl or an aromatic radical which may be substituted, are prepared ...
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JPH11228469A |
To suppress the production of a high-boiling by-product, prevent the catalyst activity from deteriorating and produce the subject compound useful as a raw material, etc., for plasticizers by reacting a conjugated alkadiene with water in ...
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JPH11228476A |
To obtain the subject insecticide and acaricide highly effective in controlling insects and mites which are pests and effective in even protecting crops during the growth or harvested crops from damage caused by attack or invasion of the...
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JPH11228453A |
To produce the subject compound in a high yield without using an organic solvent by reacting an aldehyde compound with a tetraallyl tin in the presence of a surfactant and a rare earth element Lewis acid catalyst in an aqueous solvent. T...
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JPH11221091A |
To produce the subject product usable as natural flavor and fragrance components or the like by oxidatively and biologically degrading a plant biomass including an unsaturated fatty acid and an enzyme for the oxidative degradation in the...
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JP2935453B2 |
PURPOSE: To efficiently produce an alcohol in a high yield by hydrogenating a carbonyl compound in the presence of a homogenized hydrogenation catalyst, a base and a nitrogen-containing organic compound. CONSTITUTION: A carbonyl compound...
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JP2931096B2 |
PCT No. PCT/FR91/00495 Sec. 371 Date Apr. 20, 1992 Sec. 102(e) Date Apr. 20, 1992 PCT Filed Jun. 20, 1991 PCT Pub. No. WO92/00264 PCT Pub. Date Jan. 9, 1992.The invention relates to a process for the synthesis of 1,1-bis(chlorophenyl)-2,...
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JP2929943B2 |
PURPOSE: To obtain a new S-5-hydroxy-octa-2,7-diyn-1-ol compound useful as a raw material compound capable of efficiently and simply providing an important intermediate corresponding to a part of ring A for producing a therapeutic agent ...
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JP2925812B2 |
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JP2925753B2 |
A process for separating optical isomers in a pseudo-moving bed system, which comprises introducing a solution containing an optical isomer mixture and a desorbing liquid into a packed bed containing an optical resolution packing therein...
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JP2921600B2 |
PCT No. PCT/DE90/00397 Sec. 371 Date Mar. 25, 1991 Sec. 102(e) Date Mar. 25, 1991 PCT Filed May 25, 1990 PCT Pub. No. WO90/14329 PCT Pub. Date Nov. 29, 1990. (I) (a) (II) (III) (IV) Compounds of formula (I) in which the residues have the...
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JPH11189556A |
To recycle a highly active catalyst without deactivating the catalyst and obtain alkadienols by reacting a conjugated alkadiene with water in the presence of a specific solution and carbon dioxide and then recovering a specific component...
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