Tribromostyrene products and process for making them

Details Tribromostyrene products and process for making them Tribromostyrene products and process for making them

1992-08-06

1993-09-07

Lone, Werren B.

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

Organic compounds

Halogen containing

570189, 570206, 570216, C07C 1724, C07C 2500

Patent

active

052431096

ABSTRACT:
Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is .beta.-bromoethyl-tribromobenzene (.beta.-BrBr.sub.3), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective bromination of phenethyl bromide (.beta.-Br), wherein the molar ratio of bromine to phenethyl bromide is comprised between 2.5 and 3.5, and preferably between 3.1 and 3.3 included; and by adding bromine, after an initial addition, at a controlled molar rate.

REFERENCES:
patent: 4292453 (1981-09-01), Daren
patent: 4343956 (1982-08-01), Jackisch
patent: 4423262 (1983-12-01), Jackisch
patent: 4633026 (1986-12-01), Kolich
patent: 4748286 (1988-05-01), Daren

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