Reaction of 1-methyl-2-(methylthio)thiocarbonylmethylene-1,2-dihydro-pyridine with dimethyl acetylenedicarboxylate.
D000114:Acetylene; D055598:Chemical Phenomena; D002621:Chemistry; D003998:Dicarboxylic Acids; D009682:Magnetic Resonance Spectroscopy; D011725:Pyridines; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides; D013871:Thiones
D003998:Dicarboxylic Acids; D011725:Pyridines; D013440:Sulfides; D013871:Thiones; D000114:Acetylene