The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1997
Filed:
Jun. 02, 1995
Kuraray Co., Ltd., Okayama-ken, JP;
Abstract
A process for producing an optically active olefin represented by a formula ##STR1## wherein R.sup.1 represents an organic group and X represents a polycyclic carbon ring group, by reacting a corresponding optically active ester derivative represented by a formula ##STR2## wherein R.sup.1 and X are as defined above and R represents a hydrogen atom, an alkoxy group, an alkenyloxy group or a substituted or unsubstituted aralkyloxy group, with formic acid or a salt thereof in the presence of a catalyst comprising a palladium salt and a tertiary phosphine. Said process makes it possible to produce, at a high yield at a high selectivity, an optically active olefin which has a physiological activity and is useful as a medicine or is useful as an intermediate for the synthesis of physiologically active steroids. Further, said process uses no harmful reagent such as mercury or the like. Thus, it is advantageous as an industrial process.