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:
Aug. 18, 2015
Filed:
Jan. 24, 2006
Applicants:
Werner Bonrath, Freiburg, DE;
Jocelyn Fischesser, Wittenheim, FR;
Lisa Giraudi, Huningue, FR;
Reinhard Karge, Staufen, DE;
Inventors:
Werner Bonrath, Freiburg, DE;
Jocelyn Fischesser, Wittenheim, FR;
Lisa Giraudi, Huningue, FR;
Reinhard Karge, Staufen, DE;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 239/42 (2006.01); C07D 239/50 (2006.01); C07D 417/06 (2006.01);
U.S. Cl.
CPC ...
C07D 239/42 (2013.01); C07D 417/06 (2013.01);
Abstract
The present invention relates to a novel process for the manufacture of Grewe-diamine comprising the following step: hydrolyzing a compound of formula (II), wherein R is hydrogen or straight- or branched chain C1-4 alkyl, with an aqueous alkali or alkaline-earth metal hydroxide solution, characterized in that the hydrolysis is carried out in the presence of an organic solvent.