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. 02, 1980
Filed:
Jun. 01, 1979
Applicant:
Inventor:
Bernd Hachmeister, Hanover, DE;
Assignee:
Kali-Chemie Pharma GmbH, Hanover, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 63 ;
Abstract
Disclosed is the preparation of 17-hydroxysparteine by means of the oxidation of sparteine with permanganate in an aqueous acid solution. The oxidation is highly selective and produces the 17-hydroxysparteine in a high yield of more than 90%. The oxidizing agent may be readily separated from the reaction mixture after the reaction in the form of insoluble manganese ammonium phosphate.