反应详情

25 ml of methoxycarbonyl isothiocyanate are added dropwise to 23.5 g of 5-phenoxysulfonyl-2-ureidoaniline in 100 ml of dioxane, with stirring, the temperature rising to about 35° C. The mixture is stirred for a further four hours without cooling, the dioxane is distilled off, the residue is stirred with diisopropyl ether and the solid is filtered off with suction.

1. customrising to about 35° C
2. stirringThe mixture is stirred for a further four hours
3. temperaturewithout cooling
4. distillationthe dioxane is distilled off
5. stirringthe residue is stirred with diisopropyl ether
6. filtrationthe solid is filtered off with suction