%0 Journal Article %T Synthesis of the New Type of Water-Soluble Ligand N,N-Bis-(diphenylphosphinomethyl)-2-aminoethylphosphonic Acid (Ph2PCH2)2NCH2CH2PO3H2 and Its Sodium Salt %A Xuebing Ma %A Xiangkai Fu %A Longqin Li %A Jingrong Chen %J Molecules %D 2001 %I MDPI AG %R 10.3390/60400390 %X The novel water-soluble ligand, N,N-bis(diphenylphosphinomethyl)-2-aminoethylphosphonic acid, (Ph2PCH2)2NCH2CH2PO3H2, had been synthesized in quantitative yield by reaction of 2-aminoethylphosphonic acid with bis(hydroxymethyl)-diphenylphosphonium chloride in water. Its mono- and disodium salts, which can be used as water-soluble ligands for transition metal complex catalysts, were also easily prepared under mild conditions. %K N %K N-Bis(diphenylphosphinomethyl)-2-aminoethylphosphonic acid %K Synthesis %U http://www.mdpi.com/1420-3049/6/4/390