Oxidative process for preparing substituted biphenols

Details Oxidative process for preparing substituted biphenols Oxidative process for preparing substituted biphenols

1978-11-16

1980-12-09

Morgenstern, Norman

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

Organic compounds

Oxygen containing

568718, 568721, C07C 3700, C07C 3711

Patent

active

042386276

ABSTRACT:
An oxidative process for preparing 4,4'-bis(2,6-dihydrocarbylphenols) is provided which comprises contacting with good agitation a disubstituted phenol such as 2,6-di-tertiarybutyl phenol with up to stoichiometric amounts of oxygen in the presence of a small catalytic quantity of a catalyst selected from the group consisting of alkali metal and alkaline earth metal hydroxides, alkali metal and alkaline earth metal salts of a weak acid, amine bases, and mixtures of the same at a temperature from about 50.degree. to 240.degree. C. until a reaction product containing a substantial amount of the corresponding biphenol is formed, said reaction product being substantially free of quinones.

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