Author:
Bergamasco R,Porter QN,Yap C
Abstract
3-Vinylindoles are
conveniently prepared from methylenetriphenylphosphorane and
indole-3-carbaldehydes. Those studied give normal Diels-Alder adducts with
ethenetetracarbonitrile, except in the case of the 2-methyl derivative, where
steric hindrance results in formation of a cyclobuty-indole. The adducts are
relatively unstable, and decompose rapidly to indolylbutadienetricarbonitriles.
Cited by
35 articles.
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