Reactions of phosphorus pentachloride with N,N'-dialkyl- and N-alkyl-N'-acetylureas
摘要:
N,N'-dialkylureas are phosphorylated by phosphorus pentachloride to give cyclic trichlorodiazaphosphetidinones. The formation of these derivatives in the reaction of N-methyl-N'-chloroacetylurea with PCl5 is accompanied by the chlorination of the N-acetyl fragment.