Long sought synthesis of quaternary phosphonium salts from phosphine oxides: inverse reactivity approach
作者:Anna C. Vetter、Kirill Nikitin、Declan G. Gilheany
DOI:10.1039/c8cc02173b
日期:——
Quaternary phosphonium salts (QPS), a key class of organophosphorus compounds, have previously only been available by routes involving nucleophilic phosphorus. We report the realisation of the opposite approach to QPS utilising phosphine oxides as the electrophilic partner and Grignard reagents as nucleophiles. The process is enabled through the crucial intermediacy of the derived halophosphonium salts
Exploring an Umpolung strategy for quaternization of phosphorus
作者:Anna C. Vetter、Kirill Nikitin、Declan G. Gilheany
DOI:10.1080/10426507.2018.1541242
日期:2019.5.27
phosphonium salts R3PR1 X (X = Cl, Br) from phosphine oxides R3PO. The new organic group R1 is introduced via nucleophilicattack on an intermediate halophosphonium salt using a Grignard reagent R1MgX and replaces the traditional phosphine quaternization approach. Consequently, the new method does not suffer from the limited availability of many parent phosphines and is much faster than standard quaternization
The reactions of nitrogen trichloride with some tertiary phosphines
作者:Robert M. Kren、Harry H. Sisler
DOI:10.1016/s0020-1693(00)82212-4
日期:1986.1
Abstract Nitrogen trichloride reacts with trimethyl-, triethyl-, tri-n-butyl-, and triphenylphosphine to yield dichlorophosphoranes of the general formula R3PCl2 plus dinitrogen. Nitrogen trichloride reacts with phosphorus trichloride to yield phosphorus pentachloride plus dinitrogen. Chloramine reacts with phosphorus trichloride to yield a mixture of dichlorophosphazene trimer and tetramer.