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:
Feb. 25, 2003
Filed:
Mar. 25, 2002
Applicant:
Inventors:
Max Braun, Wedemark, DE;
Kerstin Eichholz, Langenhagen, DE;
Assignee:
Solvay Fluor und Derivate GmbH, Hannover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/976 ;
U.S. Cl.
CPC ...
C07C 6/976 ;
Abstract
An improved process for preparing carboxylic acid esters from acid chlorides, acid bromides or acids and alcohols provides for performing the esterification in the presence of the adduct (onium salt) of the corresponding carboxylic acid and 1,5-diazabicyclo[4.3.0]-non-2-ene or 1,8-diazabicyclo[5.4.0]-undec-7-ene. Alternatively, it is possible to operate in the presence of the corresponding carboxylic acid and an onium salt of the corresponding carboxylic acid.