C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/485.1, 260/3
C07C 69/65 (2006.01) C07D 307/54 (2006.01)
Patent
CA 1090359
ABSTRACT OF THE DISCLOSURE: 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-dimethyl- hexanoate having a 4-halogen atom of higher atomic number than any of the 6-halogen atoms.
268407
Kondo Kiyoshi
Matsui Kiyohide
Negishi Akira
Takahatake Yuriko
Osler Hoskin & Harcourt Llp
Sagami Chemical Research Center
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