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:
Sep. 02, 1986
Filed:
Nov. 22, 1985
Applicant:
Inventors:
Hans-Joachim Kotzsch, Rheinfelden, DE;
Hans-Joachim Vahlensieck, Wehr, DE;
Assignee:
Dynamit Nobel AG, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556411 ;
Abstract
Carboxylic acid trimethylsilyl esters (I) and trimethylsilyl carboxylic acid amides can be prepared simultaneously from the corresponding carboxylic acid anhydrides; the esters (I) and monocarboxylic acid trimethylsilyl amides are formed first and can then be recovered, or else the bis-trimethylsilyl carboxylic acid amides are formed by further transposition with trimethylchlorosilane in the presence of tertiary amines, and are separated from the carboxylic acid trimethylsilyl ester (I) and recovered.