Reaction of Tetracyanoethylene with 1,2-Cyclohexanedione and Bis(cyclohexanon-2-yl)methane -[formation of unusual 1,3-cycloadduct (III) and 1,4-cycloadduct (V), respectively]. -(SHEVERDOV, V. P.; ER-SHOV, O. V.; NASAKIN, O. E.; CHERNUSHKIN, A. N.; TAFEENKO, V. A.; BULKIN, V. V.; Russ. J. Org. Chem. 37 (2001) 2, 291-292; Chuvash Ul'yanov State Univ., Cheboksary 428015, Russia; EN)