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:
Feb. 24, 1998
Filed:
Jun. 11, 1996
Applicant:
Inventors:
Patrick J Lennon, Clayton, MO (US);
Susan L Henke, Webster Grove, MO (US);
Karl W Aston, Pacific, MO (US);
Assignee:
The Monsanto Company, St. Louis, MO (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540450 ; 540451 ; 540452 ;
Abstract
A process for preparing a substituted polyazamacrocycle is provided which comprises contacting a diamine or triamine and a dicarboxylic acid or ester or anhydride thereof in the presence of a suitable base and a suitable solvent to produce the substituted polyazamacrocycle provided that when an ester of said dicarboxylic acid is used, said suitable base is optional, and when said dicarboxylic acid or an anhydride of said dicarboxylic acid is used, the reaction mixture further comprises a suitable coupling agent.