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:
Oct. 02, 1979
Filed:
Apr. 09, 1975
Applicant:
Inventor:
Franz Landauer, Frankfurt am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
A process for the preparation of N-(chloroaryl)-N',N'-dialkylamidines in which N-aryl-N',N'-dialkylamidines in the form of their salts are directly chlorinated in halogenated hydrocarbons at 15.degree.-80.degree. C. From the hydrochloride salts thus obtained the free amidines are set free with alkaline agents. The N-(chloroaryl)-N',N'-dialkylamidines are valuable intermediates for the preparation of dyestuffs and insecticides.