Tetrahedron letters

Ionic liquid-regulated sulfamic acid: chemoselective catalyst for the transesterification of β-ketoesters

W Bo, YL Ming, SJ Shuan

Index: Bo, Wang; Ming, Yang Li; Shuan, Suo Ji Tetrahedron Letters, 2003 , vol. 44, # 27 p. 5037 - 5039

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Citation Number: 89

Abstract

1-Propyl-3-methylimidazolium chloride ([C3MIm] Cl) ionic liquid and sulfamic acid (NH2SO3H), as a synergetic catalytic medium, were used for the transesterification of acetoacetate with alcohols of different structures. It shows the good ability for the chemoselective transesterificatin of β-ketoesters and maintains its catalytic activity in the reuse.

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