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:
Dec. 21, 1999
Filed:
Jun. 04, 1998
Applicant:
Inventors:
Rolf Sachse, Berlin, DE;
Albert Schaupp, Strullendorf, DE;
Assignee:
Dr.R.Pfleger Chemische Fabrik GmbH, Bamberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546127 ;
Abstract
A process for the production of endotropine by catalytically reducing tropanone with hydrogen with Raney nickel or Raney copper. This process is conducted with tropanone in an aqueous solution absent of organic solvents, in a closed system, at atmospheric pressure and ambient temperature and subject to turbulent action at 1000 to 1500 r.p.m. The process leads to average yields of 94%. The process improves on prior art processes which use an overpressure and organic solvents which involve a high fire and explosion risk.