Transition-metal-catalysed, redox-neutral dehydrosilylation of alkenes is a long-standing challenge in organic synthesis, with current methods suffering from low selectivity and narrow scope. In this study, we report a general and simple method for the manganese-catalysed dehydrosilylation and hydrosilylation of alkenes, with Mn₂(CO)₁₀ as a catalyst precursor, by using a ligand-tuned metalloradical reactivity strategy. This enables versatility and controllable selectivity with a 1:1 ratio of alkenes and silanes, and the synthetic robustness and practicality of this method are demonstrated using complex alkenes and light olefins. The selectivity of the reaction has been studied using density functional theory calculations, showing the use of an ⁱPrPNP ligand to favour dehydrosilylation, while a JackiePhos ligand favours hydrosilylation. The reaction is redox-neutral and atom-economical, exhibits a broad substrate scope and excellent functional group tolerance, and is suitable for various synthetic applications on a gram scale.

过渡金属催化的、氧化还原中性的烯烃脱氢硅烷化是有机合成中长期存在的挑战，目前的方法存在选择性低和范围窄的问题。在这项研究中，我们报告了锰催化的烯烃脱氢硅烷化和氢化硅烷化的通用且简单的方法，使用配体调节的金属自由基反应策略，以 Mn ₂ (CO) ₁₀作为催化剂前体。这使得烯烃和硅烷比例为 1:1 的多功能性和可控选择性成为可能，并且使用复杂的烯烃和轻质烯烃证明了该方法的合成稳健性和实用性。使用密度泛函理论计算研究了反应的选择性，显示了ⁱPrPNP 配体有利于脱氢硅烷化，而 JackiePhos 配体有利于氢化硅烷化。该反应是氧化还原中性和原子经济的，具有广泛的底物范围和优异的官能团耐受性，适用于克级的各种合成应用。