Process for preparing 4,4'-dihydroxybiphenyl

Details Process for preparing 4,4'-dihydroxybiphenyl Process for preparing 4,4'-dihydroxybiphenyl

1990-12-10

1992-03-17

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3750, C07C 3915

Patent

active

050970801

ABSTRACT:
A process for preparing 4,4'-dihydroxybiphenyl is disclosed, which comprises debutylation of 3,3', 5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl in an organic solvent in the presence of an acid catalyst, wherein said debutylation is carried out in the presence of water and/or a lower alcohol. The desired product can be obtained at a high purity in a high yield.

REFERENCES:
patent: 4891453 (1990-01-01), Tanaka et al.
patent: 4950808 (1990-08-01), Kowalczik et al.

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