Université de Toulouse, UPS, and CNRS, LHFA UMR 5069 (Equipe-ECOIH), 118 route de Narbonne, 31062, Toulouse, France.
Université de Toulouse, UPS, and CNRS, ICT FR2599, 118 route de Narbonne, 31062, Toulouse, France.
Angew Chem Int Ed Engl. 2017 Dec 11;56(50):15916-15920. doi: 10.1002/anie.201710358. Epub 2017 Nov 22.
A silanone substituted by bulky amino and phosphonium bora-ylide substituents has been isolated in crystalline form. Thanks to the exceptionally strong electron-donating phosphonium bora-ylide substituent, the lifetime at room temperature of the silanone is dramatically extended (t =4 days) compared to the related (amino)(phosphonium ylide)silanone VI (t =5 h), allowing easier manipulation and its use as precursor of new valuable silicon compounds. The interaction of silanone with a weak Lewis acid such as MgBr increases further its stability (no degradation after 3 weeks at room temperature).
一个被大体积氨基和膦硼酰基取代的硅烯酮已经被分离成晶体形式。由于膦硼酰基取代基具有非常强的给电子能力，因此硅烯酮在室温下的寿命大大延长（t=4 天），与相关的（氨基）（磷叶立德）硅烯酮 VI（t=5 小时）相比，这使得硅烯酮更容易操作，并可用作新的有价值的硅化合物的前体。硅烯酮与弱路易斯酸（如 MgBr）的相互作用进一步提高了其稳定性（在室温下 3 周后没有降解）。
