Document Type and Number:
Japanese Patent JPS6328897
Kind Code:
B2
Abstract:
A novel process for the preparation of (R) or (S) 2-allyl-3-methyl-4-hydroxy-2-cyclopentene-1-one comprising reacting a boron halide with an ester of a chiral carboxylic acid of the formula where A is organic group of a chiral carboxylic acid and (R) or (S) 2-allyl-3-methyl-4-hydroxy-2-cyclopentene-1-one and treating the reaction mixture with water to obtain allethrolone with the same configuration of the starting ester in high yields without undesired by-products produced in known methods.
Inventors:
JATSUKU MARUTERU
JAN TESHE
JAN PIEERU DOMUUTO
JAN TESHE
JAN PIEERU DOMUUTO
Application Number:
JP7792280A
Publication Date:
June 10, 1988
Filing Date:
June 11, 1980
Export Citation:
Assignee:
ROUSSEL UCLAF
International Classes:
C07C49/743; C07B57/00; C07C27/00; C07C27/02; C07C45/00; C07C45/65; C07C45/67; C07C51/00; C07C61/04; C07C61/13; C07C61/40; C07C62/18; C07C67/00