Process for polybrominating bisphenoxyalkanes

Details Process for polybrominating bisphenoxyalkanes Process for polybrominating bisphenoxyalkanes

1978-02-03

1980-09-16

Helfin, Bernard

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

Organic compounds

Oxygen containing

C07C 4122

Patent

active

042231698

ABSTRACT:
A process is disclosed for the essentially complete bromination of bisphenoxyethane and bisphenoxypropane, and their substitution products, with minimal cleavage of the phenoxy-to-alkylene linkages, characterized by reacting the bisphenoxyalkane reactant with a stoichiometric excess of bromine chloride in the presence of a Lewis acid catalyst and a chemically inert organic solvent adapted to dissolve all of such reactants and the catalyst. Optionally, the bisphenoxyalkane reactant and the resulting product of the process may have alkyl and chlorine substituents in either or both phenyl groups.

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