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

1991-09-09

1992-04-07

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549563, C07D30100, C07D30308

Patent

active

051030284

ABSTRACT:
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 containing chlorine or bromine and the quaternary compound.

REFERENCES:
patent: 3510532 (1970-05-01), Caropreso et al.
patent: 4116984 (1978-09-01), Prinzbach et al.
Shellhamer et al., J. Heterocyclic Chem., 20, pp. 229-232 (1983).
Chemical Abstracts 82:86251k [Movsumzade et al., Dokl. Akad. Nauk. Az. SSR, 30, 14 (1974].

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