Process for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy) be

Details Process for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy) be Process for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy) be

1988-05-20

1989-12-05

Reamer, James H.

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

Organic compounds

Oxygen containing

568314, C07C 4571

Patent

active

048853968

ABSTRACT:
A process for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy)benzophenones, by reacting 2,4-dihydroxybenzophenones with ethylene carbonate in the presence of a quaternary ammonium salt catalyst at elevated temperatures, and isolating the finished product from the crude reaction mixture.

REFERENCES:
patent: 2987555 (1961-06-01), Davis
patent: 4261922 (1981-04-01), Kim
patent: 4310708 (1982-01-01), Strege
patent: 4314086 (1982-02-01), Soula et al.
patent: 4341905 (1982-07-01), Strege
Starks et al., "Phase Transfer Catalysts", pp. 64-65, (1978).

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