Abstract In the study of reactions of N-alkyl-and N-aryltrihalogenoacetamides with PCl 5, it was demonstrated for the first time that 3-alkyl (aryl)-2, 2, 2, 4 tetrachloro-4-trihalomethyl-1, 3, 2-λ 5-oxazaphosphetanes are intermediates in the synthesis of trihaloacetimidoyl chlorides. According to quantum-chemical calculations, acyclic N-tetrachlorophosphoranes, which are the primary products in the reactions of trihaloacetamides with PCl 5, undergo ...
