Studies on Synthesis of Nitriloalkylenephosphonic Acids(Ⅳ): Synthesis of N-Alkyl-α-Aminobenzylenephosphonic Acids in Tetramethylenesulfone
Zhu Chuanfang, Xiao Haiyan, Li Zhonghua
Chinese Journal of Applied Chemistry . 1997, (3): 107 -108 .