The reaction between difluorotrichloromethylphosphine and secondary amines: a new synthesis of aminodifluorophosphines

Abstract

Difluorotrichloromethylphosphine reacts with diethylamine, piperidine, and pyrrolidine, to produce chloroform and diethylamino-N-difluorophosphine (C₂H₅)₂NPF₂, piperidine-N-difluorophosphine C₅H₁₀NPF₂, and pyrrolidine-N-difluorophosphine C₄H₈NPF₂, respectively. The last has also been prepared by fluorination of the corresponding dichloro-compound with antimony trifluoride. The phosphorus, fluorine, and proton n.m.r. spectra of these compounds are presented.