Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, D-10623 Berlin, Germany.
Chem Soc Rev. 2015 Apr 21;44(8):2202-20. doi: 10.1039/c4cs00451e.
The bond activation chemistry of B(C6F5)3 and related electron-deficient boranes is currently experiencing a renaissance due to the fascinating development of frustrated Lewis pairs (FLPs). B(C6F5)3's ability to catalytically activate Si-H bonds through η(1) coordination opened the door to several unique reduction processes. The ground-breaking finding that the same family of fully or partially fluorinated boron Lewis acids allows for the related H-H bond activation, either alone or as a component of an FLP, brought considerable momentum into the area of transition-metal-free hydrogenation and, likewise, hydrosilylation. This review comprehensively summarises synthetic methods involving borane-catalysed Si-H and H-H bond activation. Systems corresponding to an FLP-type situation are not covered. Aside from the broad manifold of C=X bond reductions and C=X/C-X defunctionalisations, dehydrogenative (oxidative) Si-H couplings are also included.
由于受阻路易斯对(FLP)的迷人发展,B(C6F5)3 和相关缺电子硼烷的键活化化学目前正在复兴。B(C6F5)3 通过 η(1)配位催化活化 Si-H 键的能力为几种独特的还原过程开辟了道路。开创性的发现是,同一类全氟或部分氟化硼路易斯酸允许相关的 H-H 键单独或作为 FLP 的一部分进行活化,为无过渡金属氢化和类似的硅氢化反应领域带来了相当大的动力。这篇综述全面总结了涉及硼烷催化的 Si-H 和 H-H 键活化的合成方法。不包括与 FLP 类型情况相对应的系统。除了 C=X 键还原和 C=X/C-X 去功能化的广泛种类外,还包括脱氢(氧化)Si-H 偶联。