Abstract: The present invention relates to a process for the preparation of perfluoroalkylphosphines comprising at least the reaction of at least one fluoro(perfluoroalkyl)phosphorane with at least one hydride ion donor, and to the use of tris(perfluoroalkyl)phosphines as perfluoroalkylating reagents.

Abstract: The invention relates to a method for producing perfluoroalkyl phosphines, comprising at least one step in which at least one fluoro(perfluoroalkyl)phosphorane is reacted with at least one hydride ion donator, and the use of tris(perfluoroalkyl)phos-phines as perfluoroalkylating reactants.

Abstract: The invention relates to a fluorination process for producing fluorinated compounds.

Abstract: Aromatic phosphorus-chlorine compounds, especially diphenylphosphinyl chloride (C.sub.6 H.sub.5).sub.2 P(O)Cl, phenylphosphonyl dichloride C.sub.6 H.sub.5 P(O)Cl.sub.2, dichlorophenylphosphine C.sub.6 H.sub.5 PCl.sub.2 and chlorodiphenylphosphine (C.sub.6 H.sub.5).sub.2 PCl, and the corresponding sulfur analogs, are obtained by reaction of aromatic phosphorus compounds, which contain oxygen or sulfur, of the formula I ##STR1## in which X=O or S, and m=1, 2 or 3, with phosphorus-chlorine compounds of the formula II(C.sub.6 H.sub.5).sub.3-n P Cl.sub.n (II)in which n=1, 2 or 3, at temperatures between about 330.degree. and 700.degree. C. Preferred starting materials are triphenylphosphine oxide (C.sub.6 H.sub.5).sub.3 PO and phosphorus trichloride PCl.sub.3.The reaction products are mainly intermediates in a variety of special areas, such as the pharmaceuticals, plant-protection, dye and polymer sectors.

Abstract: Disclosed is a process for producing methylphosphonic dichloride comprising reacting dimethyl methylphosphonate with a chlorinating agent selected from the group consisting of thionyl chloride and phosgene in the presence of a catalytic amount of an inorganic halide selected from the group consisting of ammonium halide and metallic halides where the metal cation is selected from the metals of Groups IA, IIA, IIIB, IVB, VB, VIB, VIIB, VIIIB, IB, IIB and IIIA of the Periodic Table.