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:
Sep. 22, 1987
Filed:
Mar. 28, 1985
Applicant:
Inventors:
Gerhard Sauer, Berlin, DE;
Gregor Haffer, Berlin, DE;
Assignee:
Schering Aktiengesellschaft, Berlin and Bergkamen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 69 ; 546 67 ; 546 68 ;
Abstract
2-bromoergolines can be reduced in good yields, without dimerization as determined by NMR product analysis, to the corresponding 2,3-dihydroergolines under otherwise conventional reducing conditions by introducing 2-bromoergolines, together with sodium borohydride, into trifluoroacetic acid under cooling to prevent the reaction mixture from rising above ambient temperature.