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:
Apr. 23, 2013
Filed:
Jul. 05, 2010
Applicants:
Max Braun, Wedemark, DE;
Stefan Palsherm, Barsinghausen, DE;
Uta Claassen, Hohenhameln, DE;
Inventors:
Assignee:
Solvay SA, Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/70 (2006.01); C07C 45/65 (2006.01); C07C 45/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing a halogenated precursor of an alkenone, which comprises reacting a carboxylic acid halide with a vinyl ether in a liquid reaction medium comprising an alkenone or a halogenated precursor of the alkenone, and a process for preparing an alkenone, which comprises (a) reacting a carboxylic acid halide with a vinyl ether by introducing vinyl ether into a liquid reaction medium containing carboxylic acid halide to form a halogenated precursor of the alkenone and (b) eliminating hydrogen halide from said precursor to form the alkenone.