Department of Chemistry, University of Toronto, M5S 3H6, Canada.
Chem Commun (Camb). 2018 Nov 1;54(88):12467-12470. doi: 10.1039/c8cc06564k.
The water/base intolerance of the previously reported electrophilic phosphonium cations has been overcome by replacing the labile electron-withdrawing groups generally attached to phosphorus (e.g. -F, -OAr, -CF3) with methyl groups. Tri-phosphorus(v) tricationic species, accessible in one-pot from commercially available materials, are air and water/base tolerant, yet are sufficiently Lewis acidic for catalysis.
先前报道的亲电膦阳离子对水/碱的不稳定性已通过用甲基取代通常连接在磷上的不稳定吸电子基团（例如-F、-OAr、-CF3）得到克服。三价磷(v)三阳离子可从市售材料一锅法制备得到，对空气和水/碱稳定，同时具有足够的路易斯酸性以用于催化。
