开发了一种用于膦酸酯便捷伪卤化的Atherton-Todd反应新类型。在温和改良的Atherton-Todd条件下,通过乙腈中的钠伪卤化物,(RO)2P(O)H(R = Et, i-Bu, Ph)的直接叠氮化、氰化和硫氰化反应得以轻松完成。气相色谱/质谱(GC/MS)显示相应的磷酰氯化物是中间体。还研究了乙基苯膦酸酯和二苯基膦氧化物的伪卤化反应。
Phase‐Transfer Catalyzed Pseudohalogenation of Phosphorochloridates
作者:Enxue Shi、Chengxin Pei
DOI:10.1081/scc-200050359
日期:2005.3.1
Pseudohalogenation of phosphorochloridates by sodium pseudohalides with different phasetransfer catalysts and solvents was optimized. Dialkyl and diaryl phosphorazidates phosphorocyanidates, and phosphor(isothiocyanidate)s were prepared in good yields from phosphorochloridates under two kinds of mild phase‐transfercatalyzed conditions respectively.
Abstract A rapid, efficient, solvent-free, and catalyst-free procedure has been developed for the synthesis of pseudohalophosphates from phosphorochloridate and sodium (or potassium) pseudohalides under microwave irradiation. Diethyl, diisobutyl, and diphenyl phosphorazidates, phosphorocyanidates, and phosphor(isothiocyanidate)s 2a–2i were prepared in good yields under mild conditions.