反应详情

10.4 g (0.05 mole) of phosphorus pentachloride and 11.6 g (0.05 mole) of N,N-dimethyl-N'-(3,4-dichlorophenyl)-urea in 74 ml of toluene are refluxed for 3 hours, and the volatile components are distilled off under 0.13 mbar to give 12.6 g of N,N-dimethyl-N'-(3,4-dichlorophenyl)-chloroformamidine in the form of an oil; nD25 : 1.6133.

1. distillationthe volatile components are distilled off under 0.13 mbar