The reaction of N-methoxy quinolinium methosulfate with malononitrile in dimethylsulfoxide afforded 2-and 4-dicyanomethylene-quinoline (II and III), N-methoxy-2- and 4-dicyanomethylene-quinoline (IV and V) in addition to quinoline and quinoline-1-oxide. The reaction at the higher temperature (100-110°) gave anomalous products (VI and VII). The assumed reaction mechanism was offered.
