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. 23, 2010
Filed:
Aug. 17, 2004
Applicants:
Hervé Lhermitte, Paris, FR;
Julien Grima, Etampes, FR;
Antoine Paris, Rouen, FR;
Inventors:
Assignee:
ISOCHEM, , FR;
Primary Examiner:
Int. Cl.
CPC ...
C07D 263/00 (2006.01); C07D 413/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method of preparing urethane-protected N-carboxyanhydrides of alpha amino acids. The inventive method enables the synthesis of urethane-protected N-carboxyanhydrides of alpha amino acids in the presence of a catalytic quantity of triethylene diamine without the addition of a tertiary amine-type base.