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. 26, 2012
Filed:
Feb. 27, 2009
Applicants:
Volker Maywald, Ludwigshafen, DE;
Sebastian Peer Smidt, Oftersheim, DE;
Bernd Wolf, Fussgoenheim, DE;
Christopher Koradin, Ludwigshafen, DE;
Thomas Zierke, Boehl-Iggelheim, DE;
Michael Rack, Eppelheim, DE;
Michael Keil, Freinsheim, DE;
Inventors:
Volker Maywald, Ludwigshafen, DE;
Sebastian Peer Smidt, Oftersheim, DE;
Bernd Wolf, Fussgoenheim, DE;
Christopher Koradin, Ludwigshafen, DE;
Thomas Zierke, Boehl-Iggelheim, DE;
Michael Rack, Eppelheim, DE;
Michael Keil, Freinsheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 231/10 (2006.01); C07C 69/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing alkyl 2-alkoxymethylene-4,4-difluoro-3-oxobutyrates (VI) where R is methyl or ethyl,from crude reaction mixtures of alkyl 4,4-difluoroacetoacetates (I) by