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:
Oct. 27, 2009
Filed:
Jul. 12, 2006
Applicants:
Helmut Heitger, Ingelheim, DE;
Juan M. Rodriguez-dehli, Mainz, DE;
Rolf Dach, Gau-Algesheim, DE;
Inventors:
Assignee:
Boehringer Ingelheim International GmbH, Ingelheim am Rhein, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 403/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing 1,7'-dimethyl-2′-propyl-2,5′-bi-1H-benzimidazole of formula (I) reacting N-methyl-o-phenylenediamine of formula (II) or the salts thereof with 2-propyl-4-methyl-1H-benzimidazole-6-carboxylic acid of formula (III) or the salts thereof wherein the coupling and cyclization is achieved using 1,3,5-triazine and tertiary amine.