Preparation of 4,4-dioxy-substituted stilbenes

Details Preparation of 4,4-dioxy-substituted stilbenes Preparation of 4,4-dioxy-substituted stilbenes

1977-10-31

1980-02-19

Myers, Jane S.

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

Organic compounds

Oxygen containing

560138, 568636, 568637, 568644, 568645, 568729, C07C 3922, C07C 4320

Patent

active

041896106

ABSTRACT:
Dehydrohalogenation-rearrangement of 1,1-bis(4-oxy-substituted aryl)-2-haloethanes to yield 4,4'-dioxysubstituted stilbenes is effected by heating an acidic reaction medium comprising the 1,1-bis(4-oxy-substituted aryl)-2-haloethane dissolved in a solution of an aliphatic carboxylic acid and a carboxylic acid salt. The process is particularly directed to the preparation of 4,4'-dihydroxystilbene from 1,1-bis(4-hydroxyphenyl)-2-chloroethane.

REFERENCES:
patent: 3444245 (1969-05-01), Sieber
patent: 3624162 (1971-11-01), Sieber
patent: 3683009 (1972-08-01), Middleton
Sieber, Ann. 730, 31-46 (1969).

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