Process to bromomethylate aromatic compounds

Details Process to bromomethylate aromatic compounds Process to bromomethylate aromatic compounds

2006-07-18

2006-07-18

Richter, Johann (Department: 1621)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C549S029000, C570S199000

Reexamination Certificate

active

07078465

ABSTRACT:
The present invention provides a process for bromomethylation of organic compounds, wherein said process is a two stage process comprising of the following stages: a) reacting paraformaldehyde with hydrogen bromide and separating bis-bromomethyl ether (BBME) from the reaction mixture, and, b) reacting BBME obtained in stage (a) with an organic compound in the presence of a Lewis acid, to obtain the bromomethylated organic compound. Further provided by the present invention is a process for the preparation of 4,4′-bis-(diethylphosphonomethyl)-biphenyl (BPMB).

REFERENCES:
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