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:
Dec. 25, 2001
Filed:
Mar. 04, 1993
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/05 ; C07C 3/900 ; C07C 2/704 ; C07C 2/900 ;
U.S. Cl.
CPC ...
C07C 5/05 ; C07C 3/900 ; C07C 2/704 ; C07C 2/900 ;
Abstract
A cis-olefin of the formula: R,—CH═CH—R,is prepared by reducing an alkyne of the formula: R,—C≡C—R,with formic acid in the presence of a palladium catalyst. R,and R,are independently selected from the group consisting of a hydrogen atom, ester group, substituted silyl group, carboxyl group, cyano group, aliphatic C1-C20 hydrocarbon group, and phenyl group. The cis-olefin which is a useful intermediate for the synthesis of fine chemicals is selectively produced in high yields.