p -Nitrobenzonitrile与烷基氢烷基膦容易氧化物反应(I; R 1 =我,R 2 =甲基,乙基,镨,镨我,卜吨CH 2,或卜吨CHME)和(I; R 1 =的Et,卜t或Ph; R 2 = Et),磷酸二乙基氢和二乙基次膦酸氢生成相应的1:1加合物,即烷基α-羟基亚氨基-对硝基苄基烷基膦酸酯(II; R 1 = Me; R 2 = Me,乙基,丙基,镨我,卜吨CH 2,或卜吨CHME)和(II; R 1=的Et,卜吨或pH; [R 2 = ET),二乙基α羟基亚p硝基苄酯(II; R 1 =环氧乙烷,R 2 = ET),和α羟基亚p分别硝基苄二乙基次膦酸(III)。除了在酸性条件下稳定的最后一种情况外,加合物在稀有的二恶烷水溶液中在pH 2-3·5的条件下,以非常快速的,通过手性辅助的方式发生了P–O裂变(动力学研究表明,其快约10 7,比在相似条件下经历烷基-氧裂变的简单
p -Nitrobenzonitrile与烷基氢烷基膦容易氧化物反应(I; R 1 =我,R 2 =甲基,乙基,镨,镨我,卜吨CH 2,或卜吨CHME)和(I; R 1 =的Et,卜t或Ph; R 2 = Et),磷酸二乙基氢和二乙基次膦酸氢生成相应的1:1加合物,即烷基α-羟基亚氨基-对硝基苄基烷基膦酸酯(II; R 1 = Me; R 2 = Me,乙基,丙基,镨我,卜吨CH 2,或卜吨CHME)和(II; R 1=的Et,卜吨或pH; [R 2 = ET),二乙基α羟基亚p硝基苄酯(II; R 1 =环氧乙烷,R 2 = ET),和α羟基亚p分别硝基苄二乙基次膦酸(III)。除了在酸性条件下稳定的最后一种情况外,加合物在稀有的二恶烷水溶液中在pH 2-3·5的条件下,以非常快速的,通过手性辅助的方式发生了P–O裂变(动力学研究表明,其快约10 7,比在相似条件下经历烷基-氧裂变的简单
Abstract Tert-butyl-λ5-phosphanedione was generated by flash vacuum thermolysis (FVT) of trimethylsilyl tert-butyl phosphonohalidates. The structure of tert-butyl-λ5-phosphanedione was confirmed by chemical reactions. Tert-butyl-λ5-phosphandione readily undergoes trimerization, enters into the [2 + 3] - cycloaddition reaction with 2-phenyloxirane and adds alcohols.
Generation of tert-Butyl-λ5-phosphanedione and Its Chemical Properties
作者:O. I. Kolodyazhnyi、E. V. Grishkun、A. O. Kolodyazhnaya、O. O. Kolodyazhna、S. Yu. Sheiko
DOI:10.1134/s1070363218050134
日期:2018.5
Flashvacuumthermolysis of trimethylsilyl tert-butylphosphonohalidates involved elimination of halo(trimethyl)silane with the formation of tert-butyl-λ5-phosphanedione whose structure was confirmed by chemical reactions. tert-Butyl-λ5-phosphanedione readily undergoes trimerization, reacts with 2-phenyloxirane to give cycloaddition product, and takes up alcohols.