Oxidative carbonylation of hydroxyaromatic compounds
This invention relates to the preparation of diaryl carbonates, and more particularly to their preparation using a catalyst system having improved homogeneity. Organolead compounds such as tetraethyllead are useful in catalyst compositions for the oxidative carbonylation of hydroxyaromatic compounds...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | This invention relates to the preparation of diaryl carbonates, and more particularly to their preparation using a catalyst system having improved homogeneity.
Organolead compounds such as tetraethyllead are useful in catalyst compositions for the oxidative carbonylation of hydroxyaromatic compounds to diaryl carbonates. They are employed in combination with a Group 8, 9, or 10 metal such as palladium, or a compound thereof, and a bromide or chloride such as tetraethylammonium bromide. |
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