Process for the preparation of 3,4-dihalo-1,2-epoxybutanes

Details Process for the preparation of 3,4-dihalo-1,2-epoxybutanes Process for the preparation of 3,4-dihalo-1,2-epoxybutanes

C - Chemistry, Metallurgy

07

D

C07D 303/08 (2006.01) C07D 301/00 (2006.01)

Patent

CA 2100748

Disclosed is a process for the preparation of 3,4-dichloro- and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy- 1-butane with chlorine or bromine in the presence of a quaternary ammonium or phosphonium halide compound. The reaction preferably is carried out by the addition of 3,4-epoxy-1-butane and chlorine or bromine to an organic, halogenation solvent con- taining chlorine or bromine and the quaterrlary compound.

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