Method for symmetrically dimerizing phenols and process for prod

Details Method for symmetrically dimerizing phenols and process for prod Method for symmetrically dimerizing phenols and process for prod

1989-03-09

1990-10-09

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568727, 568729, C07C 3914, C07C 3711

Patent

active

049622404

ABSTRACT:
A method for symmetrically dimerizing phenols which comprises oxidizing phenols in molten state in the liquid phase using a transition metal compound as a catalyst and an oxygen-containing gas as an oxidizing agent to conduct dimerization; and a process for producing diphenols which comprises oxidizing phenols in molten state in the liquid phase using a transition metal compound as a catalyst and an oxygen-containing gas as an oxidizing agent to conduct dimerization, and then interrupting introduction of the oxygen-containing gas to conduct a proton disproportionation reaction.

REFERENCES:
patent: 4195189 (1980-03-01), Earley

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