Method of producing aromatic carbonate
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United States of America Patent
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Mar 12, 1996
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N/A
app pub date -
Nov 28, 1994
filing date -
Jan 12, 1994
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Abstract
The present invention relates to a method of producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen using a catalyst system for suppressing the production of aryl aromatic o-hydroxycarboxylate as a by-product. The catalyst system consists of the following compounds: (A) at least one selected from palladium and palladium compounds; (B) at least one selected from lead compounds; and (C) at least one halide selected from quaternary ammonium halides and quaternary phosphonium halides; and if required, (D) at least one selected from copper and copper compounds. The method of the present invention can increase the yield of an aromatic carbonate per palladium (the turnover number of palladium).
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