Method for preparing 5-haloalkyl-4,5-dihydroisoxazole...

C - Chemistry – Metallurgy – 07 – D

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C07D 261/04 (2006.01) C07C 49/235 (2006.01) C07D 413/10 (2006.01) C07D 413/12 (2006.01) C07D 417/12 (2006.01)

Patent

CA 2693067

Disclosed is a method for preparing a compound of Formula: (1); wherein R1 is CHX2, CX3, CX2CHX2 or CX2CX3; each X is independently Cl or F; Z is optionally substituted phenyl; and Q is phenyl or 1-naphthalenyl, each optionally substituted as defined in the disclosure; comprising contacting a compound of Formula: (2).

L'invention concerne un procédé pour préparer un composé de formule 1 dans laquelle R1 est CHX?2#191, CX?3#191, CX?2#191CHX?2#191 ou CX?2#191CX?3#191; chaque X est indépendamment Cl ou F; Z est un phényle facultativement substitué; et Q est un phényle ou un 1-naphtényle, chacun facultativement substitué comme défini dans la spécification. Le procédé comporte également la mise en contact d'un composé de formule 2 avec de l'hydroxylamine en présence d'une base. La présente invention concerne également de nouveaux composés de formule 2 qui s'utilisent comme matières de départ pour le procédé décrit ci-dessus.

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