Preparation of vinyl isothiocyanates

Details Preparation of vinyl isothiocyanates Preparation of vinyl isothiocyanates

C - Chemistry, Metallurgy

07

C

C07C 331/22 (2006.01)

Patent

CA 2240422

A process for preparing a vinyl isothiocyanate comprises contacting a halogen-substituted allyl thiocyanate, in solution and at an elevated temperature, with an acidic material which is either an acid or a halide or oxyhalide of an inorganic acid. The halogen-substituted allyl thiocyanate may be prepared from a dihalogenated alkene. The vinyl isothiocyanate may subsequently be converted to a thiazole.

Divulgation d'un procédé de préparation d'isothiocyanate de vinyle, comprenant la mise en contact d'un thiocyanate d'allyle substitué par un halogène, en solution et à température élevée, avec une matière acide qui est soit un acide, soit un halogénure ou un oxyhalogénure d'un acide inorganique. Le thiocyanate d'allyle substitué par un halogène peut être préparé à partir d'un alcène dihalogéné. L'isothiocyante de vinyle peut être subséquemment converti en thiazole.

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