Abstract
The reaction of quaternary salts of 3, 3'-bipyridazines and their N-oxides with cyanide ion was carried out. 3, 3'-Bipyridazine 1, 1'-dioxides (I, II) gave the dihydro compounds having cyano groups at α-positions to the N-oxide groups (IV, V). The bipyridazines without N-oxide groups (VII, VIII) afforded the dihydro compounds having cyano groups at γ-positions to the N-CH3 groups (X, XI). And 6, 6'-dimethoxy-3, 3'-bipyridazine (IX) afforded 1, 1'-dimethyl-3, 3'-bipyridazine-6, 6'(1H, 1'H)-dione (XII). As for the 2, 2'-dioxide (III), the compound composed of both the dihydro type ring and the aromatic ring formed by the elimination of the methoxy group (VI), was obtained.
