Bromination process

Details Bromination process Bromination process

1988-05-26

1991-08-20

Scalzo, Catherine S. Kilby

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

Organic compounds

Oxygen containing

568635, 568637, 568645, C07C 4100

Patent

active

050416871

ABSTRACT:
This invention relates to the process for preparing partially brominated non-condensed ring polyaromatic product. The process comprises forming a reaction mass by adding a substantially stoichiometric amount of Br.sub.2 to a mixture comprising a non-condensed ring polyaromatic, a solvent selected from a group consisting of methylene dibromide, methylene dichloride and mixtures thereof, and a catalyst selected from the group consisting of zirconium halide, iron, ferric chloride and mixtures thereof, the reaction mass being maintained at a temperature within the range of from about 10.degree. to about 50.degree. C. during at least substantially all of the addition; refluxing the reaction mass after the addition is completed or at least nearly completed; and recovering from the reaction mass the partially brominated non-condensed ring polyaromatic product.

REFERENCES:
patent: Re32606 (1988-02-01), Stepniczka
patent: 3752856 (1973-08-01), Magy et al.
patent: 3965197 (1976-10-01), Stepniczka
patent: 4223169 (1980-09-01), Barda
patent: 4287373 (1981-09-01), Garman et al.
patent: 4717776 (1988-01-01), Brackenridge et al.
patent: 4740629 (1988-04-01), Brackenridge et al.
Chemical Abstracts, Noguchi et al., 90(9):71899a.

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