Angewandte Chemie International Edition

Cover image for Vol. 55 Issue 44

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPlusChem, Zeitschrift für Chemie

50_50b/2011Back Cover: Scope and Mechanism of the (4+3) Cycloaddition Reaction of Furfuryl Cations (Angew. Chem. Int. Ed. 50/2011)

The method of choice for the preparation of six-membered rings is (4 + 2) cycloaddition. The isoelectronic (4 + 3) cycloaddition between a diene and an allyl cation gives seven-membered rings, but the synthesis of suitable cationic reaction partners is challenging. In their Communication on page 11990 ff., J. M. Winne et al. report a novel synthetic method that uses furfuryl alcohols as three-carbon dienophiles for the rapid assembly of cycloheptenes.

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