1,1-Dichloro-2,2-bis(hydroxyphenyl)ethylene

Details 1,1-Dichloro-2,2-bis(hydroxyphenyl)ethylene 1,1-Dichloro-2,2-bis(hydroxyphenyl)ethylene

1981-11-16

1983-07-05

Trousof, Natalie

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

Organic compounds

Oxygen containing

C07C 3921

Patent

active

043919960

ABSTRACT:
A method is described for dehydrochlorinating 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane employing a refluxing dipolar aprotic solvent, such as dimethylformamide, containing a lithium halide catalyst to produce a crystalline product consisting essentially of 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene. The crystalline product can be isolated in substantially pure form and converted to a high impact, flame retardant polycarbonate.

REFERENCES:
patent: 4073814 (1978-02-01), Kinson et al.
patent: 4110541 (1978-08-01), Kinson
Hubacher, Max P. J. Organic Chemistry, (1959) pp. 1949-1951.

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