Environmentally benign carbonylation reaction: palladium-catalyzed hydroxycarbonylation of aryl halides and benzyl chloride derivatives in ionic liquid media

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Abstract

Palladium-catalyzed hydroxycarbonylations of aryl halides and benzyl chloride derivatives proceeded in ionic liquid media (l-butyl-3-methylimidazolium hexafluorophosphate (1), tetrafluoroborate (2) and Aliquat®336 (3)). The palladium-catalyst/mixture could be recycled, after separation of the product by extraction with water. The use of ionic liquid media greatly increased the yield of benzoic acid in hydroxycarbonylation.

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