Process for the preparation of diaryl carbonates

Details Process for the preparation of diaryl carbonates Process for the preparation of diaryl carbonates

1982-01-08

1985-08-06

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 6804, C07C 6806

Patent

active

045335044

ABSTRACT:
Diaryl and substituted diaryl carbonates are formed by a series of steps, the first step involving the production of a dialkyl carbonate from an alkanol, carbon monoxide and oxygen; and the second step involving the reaction of the dialkyl carbonate with a phenyl ester or substituted phenyl ester in the presence of a dialkyl tin compound to produce a mixture of diaryl carbonate, alkyl aryl carbonate, and an alkyl ester. The alkyl ester can be heated to reform the alkanol and form ketene; in turn the ketene can be reacted with the phenol or substituted phenol to form the phenyl ester or substituted phenyl ester used in the second step above.

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