Process for preparing diaryl carbonates

Details Process for preparing diaryl carbonates Process for preparing diaryl carbonates

1996-03-29

1997-09-02

Richter, Johann

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

Organic compounds

Carbonate esters

C07C 6800, C07C 6996

Patent

active

056634080

ABSTRACT:
In the preparation of diaryl carbonates from an aromatic hydroxy compound, CO and O.sub.2, use is made not only of a quaternary salt, a base, a platinum metal catalyst and a cocatalyst, but additionally of a heterogeneous promoter which is a compound of the formula

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