Bromination process

Details Bromination process Bromination process

1987-07-06

1988-04-26

Lone, Werren B.

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

Organic compounds

Oxygen containing

568776, 568637, C07C 4122, C07C 43115

Patent

active

047406291

ABSTRACT:
A process for partially brominating non-condensing ring aromatics (e.g. diphenyl ether) in the absence of a solvent by adding the polyaromatic to a stoichiometric excess of liquid bromine containing a zirconium halide catalyst. Product containing three bromine atoms per benzene ring (e.g., hexabromodiphenyl ether) is formed in high selectivity by keeping the reaction mixture below a threshold temperature at which higher bromine substitution occurs.

REFERENCES:
patent: 3965197 (1976-06-01), Stepniczk
patent: 4287373 (1981-09-01), Garman et al.

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