Preparation and purification of 2-hydroxy-4-(2'-hydroxyethoxy)ph

Details Preparation and purification of 2-hydroxy-4-(2'-hydroxyethoxy)ph Preparation and purification of 2-hydroxy-4-(2'-hydroxyethoxy)ph

1990-10-22

1992-06-02

Gray, Bruce

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

Organic compounds

Oxygen containing

558415, C07C 4500

Patent

active

051188597

ABSTRACT:
2-Hydroxy-4-(2'-hydroxyethoxy)phenyl aryl ketones I ##STR1## where Ar is substituted or unsubstituted aryl, are prepared by reacting 2,4-dihydroxyphenyl aryl ketones II ##STR2## with ethylene carbonate in the presence of an alkali metal or alkaline earth metal salt of a carboxylic acid as catalyst and purified with sodium dithionite.

REFERENCES:
patent: 4341905 (1982-02-01), Strege
patent: 4885396 (1989-12-01), Hahn et al.
patent: 4978797 (1990-12-01), Kim et al.
patent: 4980512 (1990-12-01), Aumueller et al.

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