Synlett

Thiazol-2-ylidene catalysis in intramolecular crossed aldehyde-ketone benzoin reactions

D Enders, O Niemeier

Index: Enders, Dieter; Niemeier, Oliver Synlett, 2004 , # 12 p. 2111 - 2114

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Citation Number: 41

Abstract

Abstract Intramolecular crossed aldehyde-ketone benzoin-type reactions catalyzed by nucleophilic carbenes, easily generated from commercially available thiazolium salts as precatalysts, are described. Five-and six-membered cyclic acyloins are obtained in moderate to good yields. Depending on the structure of the aldehyde-ketone substrate, an interchange of the alcohol and ketone function of the resulting acyloin is possible. Simple ...

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