Synthesis of a Counteranion‐Stabilized Bis(silylium) Ion
作者:Qian Wu、Avijit Roy、Guoqiang Wang、Elisabeth Irran、Hendrik F. T. Klare、Martin Oestreich
DOI:10.1002/anie.202003799
日期:2020.6.22
The preparation of a molecule with two alkyl‐tethered silylium‐ion sites from the corresponding bis(hydrosilanes) by two‐fold hydride abstraction is reported. The length of the conformationally flexible alkyl bridge is crucial as otherwise the hydride abstraction stops at the stage of a cyclic bissilylated hydronium ion. With an ethylene tether, the open form of the hydronium‐ion intermediate is energetically