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Synthesis 2005(12): 2055-2060
DOI: 10.1055/s-2005-870017
DOI: 10.1055/s-2005-870017
SPECIALTOPIC
© Georg Thieme Verlag Stuttgart · New York
Diallene Formation by Copper(I)-Mediated Reactions of Zirconacyclopentanes with Propargyl Halides
Further Information
Received
14 February 2005
Publication Date:
07 July 2005 (online)
Publication History
Publication Date:
07 July 2005 (online)
Abstract
In the presence of CuCl, zirconacyclopentanes reacted with two equivalents of a propargyl halide to give bisallenylation products in moderate to high yields. By controlling the amount of CuCl, stepwise allenylation was achieved and a variety of unsymmetrically substituted diallene derivatives were prepared as well.
Key words
propargyl electrophile - zirconacyclopentane - allene - SN2′ reaction - copper(I) chloride
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