(Tris (dimethylamino) phosphonioamino) tris( tris (dimethylamino) phosphoranylideneamino) phosphonium dichloride and preparation process therefor

摘要

A raw material is provided which permits preparation of tetrakisÄtris(dimetHylamino)phosphoranylideneaminoÜphosphonium hydroxide by an extremely simple process. The raw material, Ätris(dimethylamino)phosphonioaminoÜtrisÄtris(dimethylamino)phosphoran ylidene aminoÜphosphonium dichloride is prepared by bringing hydrogen chloride into contact with tetrakisÄtris(dimethylamino)phosphoranylideneaminoÜphosphonium chloride and adding the former on the latter. TetrakisÄtris(dimethylamino)phosphoranylideneaminoÜphosphonium hydroxide is prepared by bringing an aqueous solution of the dichoride into contact with an OH<->-form ion exchange resin. A separation process, is provided in which tetrakisÄtris(dimethylamino)phosphoranylideneaminoÜphosphonium chloride is separated from solution by extracting it out, as Ätris(dimethylamino)phosphonioaminoÜtrisÄtris(dimethylamino)phosphoran ylidene aminoÜphosphonium dichloride, into a water phase. An isolation process is also provided, in which an aqueous solution of Ätris(dimethylamino)phosphonioaminoÜtrisÄtris(dimethylamino)phosphoran ylidene aminoÜphosphonium dichloride is neutralized so that tetrakisÄtris(dimethylamino)phosphoranylideneaminoÜphosph onium chloride is regenerated and precipitated as a solid.