Price Amy N, Cowley Michael J
EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
Chemistry. 2016 Apr 25;22(18):6248-52. doi: 10.1002/chem.201600836. Epub 2016 Mar 15.
We report the preparation of N-heterocyclic carbene (NHC)-stabilized compounds containing P=B double bonds. The reaction of the highly functionalized phosphinoborane Mes*(SiMe3 )P-B(Cl)Cp* with Lewis bases allows access to base-stabilized phosphinidene boranes MesP=B(L)Cp (L=4-dimethylaminopyridine (DMAP), NHC) by Me3 SiCl elimination. The formation of these species is shown to proceed through transient borylphosphide anions generated by Me3 Si abstraction.
我们报道了含P=B双键的N-杂环卡宾（NHC）稳定化合物的制备。高度官能化的膦硼烷Mes*(SiMe3 )P-B(Cl)Cp与路易斯碱反应，通过消除Me3 SiCl可得到碱稳定的磷硼烯MesP=B(L)Cp*（L = 4-二甲基氨基吡啶（DMAP），NHC）。这些物种的形成表明是通过Me3 Si夺取产生的瞬态硼磷化物阴离子进行的。
