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:
May. 30, 1978
Filed:
Dec. 21, 1976
Applicant:
Inventors:
Kiyoshi Kondo, Kanagawa, JA;
Kiyohide Matsui, Kanagawa, JA;
Akira Negishi, Kanagawa, JA;
Yuriko Takahatake, Tokyo, JA;
Assignee:
Sagami Chemical Research Center, Tokyo, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560213 ;
Abstract
An improved process for preparing a 6,6,6-trihalo-3,3-dimethyl-4-hexenoate, intermediate in the production of pyrethroid insecticides, comprises dehydrohalogenating with an organic amine a 4,6,6,6-tetrahalo-3,3-dimethylhexanoate having a 4-halogen atom of higher atomic number than any of the 6-halogen atoms.