Ringschlußreaktionen mit N-(Chlormethyl)carbimidoylchloriden, 2. Mitt. Umsetzungsprodukte mit N,N′-Dimethylthioharnstoff

Heterocyclisation Reactions with N-(Chloromethyl)carboximidoyl Chlorides, II: Reaction with N, N′-Dimethylthiourea N-(Chloromethyl)benzimidoyl chloride ( 1 ) and N, N′-dimethylthiourea ( 2 ) react to form the three isomeric triazine and thiadiazine derivatives 6 , 7 and 8 , which were separated by layer chromatography. Their structures were determined by ¹³C-NMR spectroscopy. The thiadiazine derivative 11 was isolated as a by-product. A mechanism is proposed for its formation.