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:
Jan. 04, 1994
Filed:
Sep. 06, 1989
Applicant:
Inventor:
Corey H Levenson, Oakland, CA (US);
Assignee:
Cetus Oncology Corporation, Emeryville, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562577 ;
Abstract
The present invention is a simplified process for making succinyl acetone (SA). The most preferred embodiment is a one step process that reacts levulinic acid, ethyl acetate, and a base to form SA. Generally, a levulinic acid group may be reacted with an alkyl ester and a base to form SA. Optionally, the reaction may be acidified after completion to remove byproducts.