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:
Jul. 07, 1981
Filed:
Sep. 24, 1979
Applicant:
Inventor:
Karl E Koenig, Creve Coeur, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 24 ; 560142 ; 560 32 ; 562442 ; 562451 ; 564185 ; 564219 ; 564364 ; 564381 ; 2604 / ;
Abstract
Preparation of novel prochiral olefinic compounds which can be asymmetrically hydrogenated to enantiomers, which are converted to ephedrine and pseudoephedrine by described procedures.