Zur Reaktion von Halomethylphosphoniumhalogeniden, [R3PCYnX3–n]X,mit Phosphanen,R′3P

On the Reaction of Halomethylphosphonium Halides, R₃PCY_nX_3–n]X, with Phosphanes, R′₃P The results of the reaction of 19 different halomethylphosphonium halides, R₃PCY_nX_3–n]X (R = Ph, n-Bu, Me₂N, Et₂N; Y = H, F; X = Cl, Br, I; n = 0–2), with Ph₃P, n-Bu₃P, and (R₂N)₃P are presented. As reaction products bisphosphonium salts, R₃P? CY_nX_2–n? PR′₃]X₂, and phosphoranylphosphonium salts, R₃P=CY? PR′₃]X, or reduced (halo)methyl-phosphonium salts, R₃PCHY_nX_2–n]X, are obtained. Ph₃PCBrF₂]Br and Bu₃PCBrF₂]Br react with R′₃P by trans-alkylation forming R′₃PCBrF₂]Br. The factors influencing the course of the reaction are discussed.