Ene-Type Reaction through the Intermediacy of the 1,4-Dipolar Ion in the Reaction of Tetracyanoethylene with Nucleophilic Double Bonds in Liquid Sulfur Dioxide

Article abstract of DOI:10.1021/jo01311a010

The expected <2 + 2> cycloadduct from the reaction of tetracyanoethylene with 1-methoxycyclohexene in liquid sulfur dioxide underwent a previously unrecognized reaction to give 1-methoxy-6-(1,1,2,2-tetracyanoethyl)-cyclohexene.Further isomerization of thi