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:
May. 07, 2002
Filed:
Feb. 05, 2001
Applicant:
Inventors:
Pingwah Tang, Elmsford, NY (US);
Feng Ye, Ossining, NY (US);
Assignee:
Emisphere Technologies, Inc., Tarrytown, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
C07C / ; C07C / ;
Abstract
The present invention provides an inexpensive one-step method for preparing an aromatic carboxamide, such as a phenyl substituted carboxamide) by reacting an aromatic amine (e.g. a phenylamine) and a carboxylic acid (e.g. an alkanoic acid or ester thereof) in the presence of a boron containing compound (e.g. boronic acid or boric acid) and, optionally, a chelating agent (e.g. a 2-pyridinylamine).