Preparation of 4,4'-dibromobiphenyl

Details Preparation of 4,4'-dibromobiphenyl Preparation of 4,4'-dibromobiphenyl

1989-04-24

1991-05-14

Lone, Werren B.

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

Organic compounds

Halogen containing

570206, 570207, 570209, C07C 1712, C07C 2518

Patent

active

050157922

ABSTRACT:
4,4'-Dibromobiphenyl is selectively produced in high yields by actively brominating biphenyl in a reaction medium containing at least one strong acid having a pKa of at most 4, e.g., a carboxylic or sulfonic acid, and, optionally, a reaction solvent.

REFERENCES:
patent: 2019015 (1935-10-01), McCullough
patent: 2452154 (1948-10-01), Ross
patent: 2659760 (1953-11-01), Frevel et al.
patent: 3011035 (1961-12-01), Knowles et al.
patent: 3062289 (1962-11-01), Sax
The Condensed Chemical Dictionary Fifth Ed (1956) p. 15.
Olah et al. "Superacids" pub. Jon Wiley & Sons (1985) pp. 1-37.

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