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Protocol
Nature Protocols 2, 1746–1751 (1 July 2007) | doi:10.1038/nprot.2007.254
Direct ester condensation catalyzed by bulky diarylammonium pentafluorobenzenesulfonates
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Abstract
A protocol for ester condensation between equimolar amounts of carboxylic acids and alcohols catalyzed by bulky diarylammonium pentafluorobenzenesulfonate is described. We also present procedures for the synthesis of N-(2,6-diisopropylphenyl)-N-mesitylammonium pentafluorobenzenesulfonate. The present ester condensation proceeds well under mild conditions even without the removal of generated water. The synthesis of N-(2,6-diisopropylphenyl)-N-mesitylammonium pentafluorobenzenesulfonate will take |[sim]|5 days. The ester condensation reactions will take |[sim]|6 h to 3 days.
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