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:
Jun. 11, 1991
Filed:
Jan. 24, 1990
Applicant:
Inventor:
Jacob Mathew, Fenton, MO (US);
Assignee:
Petrolite Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568352 ; 568312 ; 568 42 ; 549 78 ;
Abstract
2,3-disubstituted-2-cyclopenenones (such as cisjasmone) are prepared by (a) reacting an alkl 2-chloro-2,3-disubstituted-3-butenoate with a lithiomercaptan compound, (b) subjecting that product to reductive dehydrosulfurization. Methods of preparing the reactants are also disclosed.