
%0 Journal Article
%A Bergamasco, R 
%A Porter, QN 
%A Yap, C 
%T Vinylindenes and some heteroanalogues in the Diels-Alder reaction. IV. Reactions of ethenetetracarbonitrile with some 3-vinylindoles
%J Australian Journal of Chemistry
%D 1977/07/01
%V 30
%N 7
%P 1531-1544
%K 
%R https://doi.org/10.1071/CH9771531
%U https://www.publish.csiro.au/paper/CH9771531 
%X 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. 
