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:
May. 20, 1997
Filed:
Jun. 27, 1996
Applicant:
Inventors:
Assignee:
Degussa Aktiengesellschaft, Frankfurt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548530 ; 548533 ; 548537 ; 548538 ; 548540 ;
Abstract
Method for the preparation of N-protected 4-ketoproline derivatives of formula I ##STR1## by oxidation of the corresponding N-protected 4-hydroxyproline derivatives of ##STR2## using the system TEMPO (2,2,6,6-tetramethylpiperidinyl oxy free radical)/NaOCl.