Dehydrohalogenation of haloethyl brominated benzenes

Details Dehydrohalogenation of haloethyl brominated benzenes Dehydrohalogenation of haloethyl brominated benzenes

1983-09-27

1987-08-11

Moyer, Donald B.

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

Organic compounds

Halogen containing

570200, 502164, C07C 1734

Patent

active

046863117

ABSTRACT:
A process for the preparation of bromostyrenes which comprises aqueous alcoholic alkali dehydrohalogenation of a 1-haloethyl bromobenzene, a 2-haloethyl bromobenzene, or a 1-methyl-2-haloethyl brominated benzene in the presence of a phase transfer catalyst at a temperature of between about 0.degree. C. and about 150.degree. C. The bromostyrenes have the particular utility as a comonomer for the preparation of a co-polymer exhibiting a flame retardancy. Both bromostyrenes and brominated alpha-methyl styrenes are formed.

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