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. 04, 2006
Filed:
Jul. 31, 2003
Applicants:
Elisabeth Borredon, Tournefeuille, FR;
Berhard Chabaud, Carpentras, FR;
Antoine Gaset, Toulouse, FR;
Sophie Thiebaud-roux, L'Union, FR;
Samedy Ouk, Toulouse, FR;
Inventors:
Elisabeth Borredon, Tournefeuille, FR;
Berhard Chabaud, Carpentras, FR;
Antoine Gaset, Toulouse, FR;
Sophie Thiebaud-Roux, L'Union, FR;
Samedy Ouk, Toulouse, FR;
Assignee:
Group SNPE, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 295/00 (2006.01); C07D 265/30 (2006.01); C07D 295/02 (2006.01); C07D 241/04 (2006.01); C07D 233/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the monomethylation of nitrogenous heterocycles having at least one nitrogen atom bonded to a hydrogen atom by reacting the nitrogenous heterocycle with dimethyl carbonate at a temperature of between 100° and 200° C. and a pressure of between 0.93×10Pa and 1.07×10Pa while methanol produced during the reaction is distilled off as it is formed.