Title:
アルキン化合物の選択的還元
Document Type and Number:
Japanese Patent JP3745716
Kind Code:
B2
Abstract:
Dithionite salts or hydroxymethanesulfinate salts are used as reducing agents in a method for the production of cyclohexene derivatives substituted with a penta-1,3-dienyl or penta-1,4-dienyl group by selective reduction of the corresponding pent-3-en-1-ynyl or pent-4-en-1-ynyl compound. Method for the production of cyclohexene derivatives of formula (I) or (II), which comprises reduction of alkyne compounds of formula (III) or (IV) with a reducing agent selected from salts of dithionous acid and/or hydroxymethanesulfinic acid. R<1> = a group of formula (A), (B), (C) or (D); R<2> = OH or a protecting group which can be converted into a hydroxyl group by hydrolysis; R<3>, R<4> = H or 1-4C alkyl; and R<5> = H or 1-4C acyl.
Inventors:
Johannes Glimmer
Thomas Muller
Volker Bomb
Thomas Muller
Volker Bomb
Application Number:
JP2002238199A
Publication Date:
February 15, 2006
Filing Date:
August 19, 2002
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07C403/08; C07B35/02; C07C45/62; C07C49/713; C07C49/743; C07C403/02; C07D317/44; C07D317/46; C07D317/50; C07D317/64
Domestic Patent References:
| JP7053508A | ||||
| JP55000389A | ||||
| JP58079972A | ||||
| JP64025740A |
Attorney, Agent or Firm:
Yusuke Hiraki
Satoshi Fujita
Ishii Teiji
Satoshi Fujita
Ishii Teiji