Process for preparing 4,4'-dihydroxybiphenyl

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

1991-01-16

1992-02-25

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3914, C07C 3708

Patent

active

050915924

ABSTRACT:
A process for preparing 4,4'-dihydroxybiphenyl comprising oxidizing 4,4'-diisopropylbiphenyl with molecular oxygen and decomposing the resulting oxidation product in the presence of an acid catalyst is disclosed, in which oxidation of 4,4'-diisopropylbiphenyl is carried out in the presence of ammonia or an ammonium salt. The oxidation product has an increased selectivity of 4,4'-diisopropylbiphenyl dihydroperoxide and, therefore, produces the desired product in high yield upon acid decomposition.

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