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. 08, 1981
Filed:
Feb. 26, 1980
Applicant:
Inventors:
Ryuzo Nishiyama, Takatsuki, JP;
Kanichi Fujikawa, Moriyama, JP;
Isao Yokomichi, Moriyama, JP;
Yasuhiro Tsujii, Moriyama, JP;
Shigeyuki Nishimura, Shiga, JP;
Assignee:
Ishihara Sangyo Kaisha Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546345 ; 546346 ;
Abstract
Pyridine derivatives having a trifluoromethyl group at .beta.-position thereof are produced by reacting .beta.-picoline with chlorine and hydrogen fluoride in a vapor phase at high temperature for a short time. The reaction condition can be mild and the yield of the object compound is increased by reacting them in the presence of a specific metal fluodie. The pyridine derivatives useful as starting materials for agricultural chemicals and medicines can be continuously obtained by a simple reaction at high yield.