Title:
【発明の名称】α,β―不飽和ケトン類の製法
Document Type and Number:
Japanese Patent JP2789735
Kind Code:
B2
Abstract:
PCT No. PCT/JP90/01488 Sec. 371 Date Jul. 15, 1991 Sec. 102(e) Date Jul. 15, 1991 PCT Filed Nov. 15, 1990 PCT Pub. No. WO91/07371 PCT Pub. Date May 30, 1991.The present invention relates to a method for the preparation of alpha , beta -unsaturated ketones represented by general formula (II) (II) (where R is a heterocyclic group with nitrogen atom in the ring or a phenyl group with electron donative substituents) which comprises reacting aldehydes represented by general formula (I) RCHO (I) (where R is a s defined above) with acetone, in the presence as a catalyst of one or tow or more compounds selected from the group consisting of perhydroisoindole and pyrrolidine which may have substituents, in a water solvent, at 20 DEG C. to 40 DEG C., and then reacting at the reflux temperature. The compound (II) is extremely important as an intermediate for pharmaceuticals and agricultural chemicals.
Inventors:
NAKAJIMA TADASHI
KYOTANI TADASHI
TSUKAJIMA KEIICHI
KYOTANI TADASHI
TSUKAJIMA KEIICHI
Application Number:
JP29738889A
Publication Date:
August 20, 1998
Filing Date:
November 17, 1989
Export Citation:
Assignee:
NIPPON SOODA KK
International Classes:
C07B41/06; C07B61/00; C07C45/72; C07C45/74; C07C49/217; C07C49/225; C07C221/00; C07C225/22; B01J31/02; C07D213/50; (IPC1-7): C07C49/225; C07C45/74; C07C221/00; C07C225/22; C07D213/50
Attorney, Agent or Firm:
Yoshimi Yokoyama (1 person outside)