3-Chloro-6-(alpha)-styryl)pyridazines (1) react with primary amines to give 3-substituted-amino-6-(alpha) styryl) pyridazines (2a-d) while they react with alcoholic thiourea to give 3-mercapto-6-(alpha) styrl) pyridazines (4). The latter compounds were also prepared by the action of phosphorus pentasulphide on 6-(alpha)-styryl) pyridazin-3 (2H)-ones (6). The reaction of 4 with alkyl iodides and acrylonitrile is also discussed.
N A SHAMS ,A M.A EL KHAMRY ,O E MUSTAFA ,M F ISMAIL ,
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