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. 24, 2014
Filed:
Dec. 09, 2008
Applicants:
Bruno Heinisch, Lyons, FR;
Pascal Pitiot, Lyons, FR;
Jean-louis Grieneisen, Corbas, FR;
Inventors:
Assignee:
Rhodia Operations, Aubervilliers, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 59/00 (2006.01); C07C 65/21 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for preparing optionally substituted P-hydroxymandelic compounds and derivatives thereof. The method for preparing the mandelic compounds of the invention comprises condensing in water, in the presence of an alkaline agent, an aromatic compound bearing at least one hydroxyl group and having a free para position, with glycoxylic acid, wherein said method is characterised in that said reaction is carried out in a piston-flow reactor.