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:
Nov. 24, 1987
Filed:
Jun. 09, 1986
Applicant:
Inventors:
Merten Schlingmann, Konigstein, DE;
Hans-Ullrich Hoppe, Hofheim am Taunus, DE;
Walter Dursch, Konigstein, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560171 ;
Abstract
In the process for the preparation of 4-benzyl aspartate starting from dibenzyl aspartate and/or its salts only one benzyl group is selectively removed by catalytic hydrogenation. By setting up appropriate reaction conditions elimination takes place mainly of the benzyl group on the C.sub.1 atom of the compound. The desired product can be isolated from the reaction mixture by precipitation.