Title:
場合によっては置換された脂肪族、芳香族またはヘテロ芳香族アルデヒドの製造方法
Document Type and Number:
Japanese Patent JP2004502659
Kind Code:
A
Abstract:
The invention relates to a method for producing optionally substituted aliphatic, aromatic or heteraromatic aldehydes of formula (I), whereby the R represents a C1-C20 Alkyl radical, an aromatic or heteraromatic radical Ar which can optionally be substituted once or on a number of occasions by OH, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 carboxylic acids or ester containing 1-6 C atoms in the ester part, phenyl, halogen, SO3H, NO2, NR1R2 or SR1 whereby R1 and R2 can be independently H, phenyl or C1-C6 alkyl. The invention is characterised by a compound of formula (II) wherein R has the above meaning, a) is diazotized in an acidic medium, at a temperature of between -10 -+100 ° C. by a diazoation reagent and is transformed into the corresponding hydroxy carboxy acid whereby b) is transformed, by means of oxygen, into the appropriate aldehyde of formula (I) in the presence of a metal, the salt thereof, oxide or hydroxide as a catalyst.
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Inventors:
Winkler Beltholt
Handel Wolfram
Pehilauer Peter
Hui Ferdinand
Handel Wolfram
Pehilauer Peter
Hui Ferdinand
Application Number:
JP2002507753A
Publication Date:
January 29, 2004
Filing Date:
June 08, 2001
Export Citation:
Assignee:
DMS Fine Chemicals Austria Nachfolgel Geselsyaft Mito Besilyenktel Haftung und Companion Commande Date Geselsyaft
International Classes:
C07C45/54; C07B61/00; C07C45/39; C07C47/565; (IPC1-7): C07C45/54; C07C47/565
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith