Synlett 2004(9): 1541-1544  
DOI: 10.1055/s-2004-829068
LETTER
© Georg Thieme Verlag Stuttgart · New York

Tandem Isomerization/Claisen Rearrangement of Diallyl- and Allylhomoallyl­ethers: In Situ Conversion of Grubbs’ Catalyst to a Ru-H Species

Bernd Schmidt*
Universität Dortmund, Fachbereich Chemie, Organische Chemie I, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
Fax: +49(231)7555363; e-Mail: bschmidt@chemie.uni-dortmund.de;
Further Information

Publication History

Received 3 April 2004
Publication Date:
01 July 2004 (online)

Abstract

Diallyl- and allylhomoallylethers do not undergo the expected ring closing metathesis reaction if ethyl vinyl ether is added to the reaction mixture. Instead, upon heating, a selective isomerization of the substrates to allyl vinyl ethers is induced. These then ­undergo a Claisen rearrangement to produce pent-4-enals.