Vinylindenes and some heteroanalogues in the Diels-Alder reaction. IV. Reactions of ethenetetracarbonitrile with some 3-vinylindoles
- 1 January 1977
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 30 (7) , 1531-1544
- https://doi.org/10.1071/ch9771531
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.Keywords
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