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:
Feb. 01, 1977
Filed:
Apr. 02, 1975
Applicant:
Inventors:
Helmut Bonnemann, Essen (Ruhr), DT;
Hartmut Schenkluhn, Mulheim (Ruhr), DT;
Assignee:
Studiengesellschaft Kohle M.b.H., Mulheim (Ruhr), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602949 ;
Abstract
In the production of pyridines by the reaction of alkynes and nitriles in the presence of a cobalt-containing catalyst, special catalysts have been found to give high yields. The catalyst can be a cobalt-(I) complex compound of the type cyclooctenyl-cobalt(I)-cyclooctadiene, methyl heptadienyl-cobalt(I)-butadiene and cyclopentadienyl-cobalt(I)-cyclooctadiene, or it can be formed in situ by reducing a di- or tri-valent cobalt salt with zinc, cadmium, a metal of the main groups I to III of the Periodic Table or with an organometallic compound of any of the foregoing.