Tetrahedron

The dual role of ionic liquid BmimBF 4, precursor of N-heterocyclic carbene and solvent, in the oxidative esterification of aldehydes

I Chiarotto, M Feroci, G Sotgiu, A Inesi

Index: Chiarotto, Isabella; Feroci, Marta; Sotgiu, Giovanni; Inesi, Achille Tetrahedron, 2013 , vol. 69, # 37 p. 8088 - 8095

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Citation Number: 12

Abstract

Abstract Room temperature ionic liquid BmimBF 4 (1-butyl-3-methylimidazolium tetrafluoroborate) has been utilized in the N-heterocyclic carbene-catalyzed oxidation of aldehydes to yield esters. In the presence of MnO 2 as oxidant and of DBU and caesium carbonate as bases, aromatic, heteroaromatic and aliphatic esters have been isolated in good to excellent yields. The recyclability of the used ionic liquid along with the excess of ...

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