Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1987-03-30
1988-07-05
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562469, 562508, C07C 0976
Patent
active
047556170
ABSTRACT:
A process for the preparation of 4'-hydroxybiphenyl-4-carboxylic acid by reacting a cyclohexanone-4-carboxylic acid compound with phenol in the presence of an acid catalyst, and then subjecting the resulting 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid compound to decomposition and dehydrogenation reactions in the presence of a base and a dehydrogenation catalyst. The aforesaid cyclohexanone-4-carboxylic acid compound is obtained by catalytically hydrogenating a 4-hydroxybenzoic acid compound in a secondary alcohol or tertiary alcohol solvent, and the reaction mixture thus obtained is directly used for the reaction with phenol.
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patent: 3970694 (1976-07-01), Minai et al.
patent: 4537704 (1985-08-01), Sprecker et al.
Journal of American Chemical Society, 58, 1738 (1936).
Bulletin of the Chemical Society of Japan, 30, 508-13 (1957).
Method der organischen Chemie, vol. 6/1c, No. 2, (1976), p. 1028.
Miura Tohru
Mizuta Hideki
Nagata Teruyuki
Killos Paul J.
Mitsui Toatsu Chemicals Incorporated
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