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:
Jun. 23, 1992
Filed:
Aug. 13, 1990
Applicant:
Inventors:
Karl-Rudolf Gassen, Odenthal, DE;
Albrecht Marhold, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560213 ; 560219 ; 562526 ; 568946 ;
Abstract
.alpha.-Fluoroacryloyl derivatives are prepared by reacting a dihalogenopropene with an anhydrous mixture of nitric acid and hydrofluoric acid to give a 1-nitro-2,2-fluorohalogeno-3-halogenopropane, converting this in the presence of a strong acid and a little water at elevated temperature to a 2,2-fluorohalogeno-3-halogenopropanoic acid, converting this into an ester or an amide and finally treating this with a dehalogenating agent.