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. 12, 1994
Filed:
Mar. 19, 1992
Applicant:
Inventors:
Gregor Haffer, Berlin, DE;
Helmut Borner, Berlin, DE;
Klaus Nickisch, Berlin, DE;
Julius Deutsch, Berlin, DE;
Assignee:
Schering Aktiengesellschaft, Berlin and Bergkamen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 86 ;
Abstract
Disclosed is chemoselective phenylation of 5-hydroxy-.beta.-carbolines in the presence of weak bases while adding water.