Durin Gabriel, Fontaine Albane, Berthet Jean-Claude, Nicolas Emmanuel, Thuéry Pierre, Cantat Thibault
Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette Cedex, France.
Angew Chem Int Ed Engl. 2022 Jun 7;61(23):e202200911. doi: 10.1002/anie.202200911. Epub 2022 Apr 5.
The metal-free catalytic hydrogenolysis of silyl triflates and halides (I, Br) to hydrosilanes is unlocked by using arylborane Lewis acids as catalysts. In the presence of a nitrogen base, the catalyst acts as a Frustrated Lewis Pair (FLP) able to split H and generate a boron hydride intermediate capable of reducing (pseudo)halosilanes. This metal-free organocatalytic system is competitive with metal-based catalysts and enables the formation of a variety of hydrosilanes at room temperature in high yields (>85 %) under a low pressure of H (≤10 bar).
通过使用芳基硼烷路易斯酸作为催化剂，实现了三氟甲磺酸硅酯和卤化物（I、Br）向硅烷的无金属催化氢解反应。在氮碱存在下，该催化剂作为受阻路易斯酸碱对（FLP），能够裂解H并生成能够还原（拟）卤硅烷的硼氢化物中间体。这种无金属有机催化体系与金属基催化剂具有竞争力，能够在室温下、低氢气压力（≤10 bar）下以高产率（>85%）形成多种硅烷。
