C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/477, 260/492
C07C 69/62 (2006.01) C07C 69/74 (2006.01)
Patent
CA 1210776
ABSTRACT OF THE DISCLOSURE: Novel syntheses of certain cyclopropanecarboxylates, including potent insecticides, are described. The pro- cesses begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, fol- lowed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
339362
Kondo Kiyosi
Matsui Kiyohide
Negishi Akira
Takahatake Yuriko
Osler Hoskin & Harcourt Llp
Sagami Chemical Research Center
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