Process for producing 4-formyl-4'-methylbiphenyl from biphenyl

Details Process for producing 4-formyl-4'-methylbiphenyl from biphenyl Process for producing 4-formyl-4'-methylbiphenyl from biphenyl

1994-07-28

1995-07-25

Lone, Werren B.

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

Organic compounds

Oxygen containing

568426, 568429, C07C 4549

Patent

active

054363748

ABSTRACT:
A process for producing a 4-formyl-4'-methylbiphenyl from a biphenyl which comprises conducting the carbonylation of the biphenyl with carbon monoxide in the presence of a HF-BF.sub.3 catalyst in a carbonylation reactor to obtain the resulting reaction product solution containing a 4-formylbiphenyl, separating the 4-formylbiphenyl from the reaction product solution, hydrogenating the separated 4-formylbiphenyl to obtain a 4-methylbiphenyl, recycling the 4-methylbiphenyl to the carbonylation reactor, and then conducting both the carbonylation of the biphenyl with carbon monoxide to obtain a formylbiphenyl and the carbonylation of the 4-methylbiphenyl with carbon monoxide to obtain a 4-formyl-4'-methylbiphenyl simultaneously in the presence of the HF-BF.sub.3 catalyst in the carbonylation reactor.

REFERENCES:
patent: 4460794 (1984-07-01), Fujiyama et al.

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