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:
Mar. 02, 1976
Filed:
Sep. 10, 1973
Applicant:
Inventor:
Paul B Sollman, Wilmette, IL (US);
Assignee:
G. D. Searle & Co., Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
Treatment of DL-phenylalanine alkyl esters with N-acyl-D-phenylalanines results in the formation of insoluble salts of the L-phenylalanine alkyl esters and N-acyl-D-phenylalanines. The salts are isolated and decomposed to afford the desired L-phenylalanine alkyl esters, which are important starting materials in the preparation of artificial sweetening agents.