Process for the preparation of brominated compounds, especially

Details Process for the preparation of brominated compounds, especially Process for the preparation of brominated compounds, especially

1993-05-28

1995-01-24

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549434, 549504, 558 61, 558140, 560226, 562603, 568663, 570258, 570206, 570261, C07D30902, C07C 6963

Patent

active

053844157

ABSTRACT:
A process for the preparation of a brominated compound which comprises the step of reacting at least one compound selected from the group consisting of a chloroformate, a chlorosulfite and a chlorophosphite with a brominating agent for a time sufficient to obtain at least one brominated compound. In particular, an alcohol is converted into a chloroformate, chlorosulfite or a chlorophosphite, which is then brominated to obtain the desired product. In another embodiment, a brominating agent is reacted with a reactant selected from the group consisting of thionyl chloride, phosgene and phosphorous oxychloride, followed by contacting the reaction product obtained with an alcohol to be brominated.

REFERENCES:
patent: 3130222 (1964-04-01), Asadorian et al.
CA:97(14)114572W, Chem. Eng. News, vol. 60, No. 28, p. 5, 1982, "Caution With Thionyl Chloride".
Jean-Manuel Mas et al., "A New Simple and Industrial Process For Bromination of Alcohols", Synthetic Comunications, 22 (15) 2187-2191 (1992).
"Alcohols" Van Nostrand Reinhold Encyclopedia of Chemistry, fourth edition, pp. 28-30 (1984).

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