Chemoselective Synthesis of
New Functionalized Tri(pyridinium) Triflates and Tosylates bearing
Chalcogenophosphoryl Moieties
作者:Nina Gusarova、Nina Ivanova、Pavel Volkov、Ludmila Larina
DOI:10.1055/s-0028-1083172
日期:——
Tris[2-(2-pyridyl)ethyl]phosphine chalcogenides, prepared easily from 2-vinylpyridine and phosphorus red, react chemoselectively with three equivalents of 4-toluenesulfonic or trifluoromethanesulfonic acids under mild conditions (THF, r.t., 50-80 min, THF) to give the corresponding tri(pyridinium) triflates and tosylates in quantitative yields.
三[2-(2-吡啶基)乙基]膦硫族化物,由 2-乙烯基吡啶和磷红容易制备,在温和条件下 (THF, rt, 50-80 min, THF) 与三当量的 4-甲苯磺酸或三氟甲磺酸发生化学选择性反应) 以定量产率得到相应的三(吡啶)三氟甲磺酸盐和甲苯磺酸盐。