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Synlett 2004(9): 1541-1544
DOI: 10.1055/s-2004-829068
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
Further Information
Received
3 April 2004
Publication Date:
01 July 2004 (online)
Publication History
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.
Key words
catalysis - rearrangements - ruthenium - tandem reactions
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