Synthesis of Electron??Rich Sterically Hindered P1 Phosphazene Bases by the Staudinger Reaction

…, SM Polyakova, I Císařová, J Saame…

Index: Alexandrova, Anastasia V.; Masek, Tomas; Polyakova, Svetlana M.; Cisarova, Ivana; Saame, Jaan; Leito, Ivo; Lyapkalo, Ilya M. European Journal of Organic Chemistry, 2013 , # 9 p. 1811 - 1823

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Citation Number: 4

Abstract

Abstract The synthesis of electron-rich P 1 phosphazene bases with a sterically protected basic center by a Staudinger reaction is reported. The initial products of the reaction between peralkylated triaminophosphanes and bulky alkyl azides, phosphazides 1a–f, were isolated in all cases in good to quantitative yield. The structures of 1d and 1e were confirmed by single-crystal X-ray diffraction. Acidic hydrolysis of pyrrolidino-substituted phosphazide ...