... a New Electrophilic Olefin HK Hall, Jr.,* and RC Sentman Department of Chemistry, The University of Arizona, Tucson, Arizona 85721 Received February 17, 1982 ... Page 2. Dimethyl l,l-Dicyanoethene-2,2-dicarboxylate J. Org. Chem., Vol. 47, No. 23, 1982 4573 ...