Tetrahedron

Indium (III) triflate catalysed transacetalisation reactions of diols and triols under solvent-free conditions

BM Smith, TM Kubczyk, AE Graham

Index: Smith, Brendan M.; Kubczyk, Tomasz M.; Graham, Andrew E. Tetrahedron, 2012 , vol. 68, # 38 p. 7775 - 7781

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Citation Number: 10

Abstract

Acyclic acetals and ketals undergo transacetalisation in the presence of catalytic quantities of indium (III) triflate (In (OTf) 3) and diols or triols under solvent-free conditions to generate the corresponding cyclic acetals and ketals in excellent yield. The methodology has been further developed to encompass a tandem acetalisation-acetal exchange protocol, which provides a facile and high yielding route to cyclic ketals from unreactive ketones under ...

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