Process for the preparation of 4,4'-dihydroxybiphenyl

Details Process for the preparation of 4,4'-dihydroxybiphenyl Process for the preparation of 4,4'-dihydroxybiphenyl

1989-04-21

1990-08-21

Lone, Werren N.

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

Organic compounds

Oxygen containing

568722, 568723, 568805, C07C 3750, C07C 3912

Patent

active

049508083

ABSTRACT:
Reducing 3,3', 5,5'-tetra-t-butyldiphenoquinone with 2,6-di-t-butylphenol, in the melt, in the presence of a 4-dialkylaminopyridine, and then dealkylating the intermediate formed, in the melt, by adding a phosphorus-containing acid or its derivative provides 4,4'-dihydroxybiphenyl of high purity in high yield.

REFERENCES:
patent: 4205187 (1980-05-01), Cardenes et al.
patent: 4482755 (1984-11-01), Kruse et al.
Hay "Chemical Abst." vol. 64, p. 6537, (1966).

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