
%0 Journal Article
%A Cherry, WH 
%A Craig, JT 
%A Porter, QN 
%T Vinylindenes and Some Heteroanalogues in the Diels-Alder Reaction. VI. Vinylbenzo[b]thiophens and Ethenetetracarbonitrile
%J Australian Journal of Chemistry
%D 1979/01/01
%V 32
%N 1
%P 133-143
%K 
%R https://doi.org/10.1071/CH9790133
%U https://www.publish.csiro.au/paper/CH9790133 
%X 3-Vinylbenzo[b]thiophen and three simple homologues are shown to give normal Diels-Alder adducts with ethenetetracarbonitrile, whereas the 3-methyl-2-vinyl- and 2-methyl-3-prop-1'-enyl derivatives give cyclobutanes. 2-Methyl-3-vinylbenzo[b]thiophen and ethenetetracarbonitrile give an adduct resulting from reaction of a tautomeric form of the diene, but a naphthalene analogue and a phenanthrene analogue of this substituted benzothiophen give normal adducts. 
