反应详情

24.0 g (0.1 mol) of 2.4-dichloro-phenyl-β-chloro-ethylketone (95%) are heated under reflux with 7.6 g (0.1 mol) of thiourea in 100 ml of ethanol. After approximately 3.5 hours, the reaction product has separated off as colourless crystals; 23.7 g (approximately 85% of the theory) of 2-amino-4-(2,4-dichloro-phenyl)-1,3-thiazine-hydrochloride are obtained as colourless crystals with a melting point of 236° C.

1. customthe reaction product has separated off as colourless crystals