We present a metal-free and mild three-component reaction involving vinylarenes, NHC–BH₃ complexes, hydrosilanes, and 4-cyanopyridine. This versatile reaction encompasses a broad scope, with over 40 examples of vinylarenes, NHC–BH₃ complexes, and hydrosilanes, leading to the synthesis of diverse β-pyridinyl boranes and β-pyridinyl silanes. Furthermore, we demonstrate the potential of this methodology by functionalizing pharmaceutical molecules, showcasing its practical applications. Remarkably, this reaction was performed with simple and inexpensive benzophenone, and notably, it did not require the presence of alkali or any costly transition metals.

中文翻译：

---

乙烯基芳烃的无金属可见光诱导的硼化/甲硅烷化吡啶化


我们提出了一种无金属的温和三组分反应，涉及乙烯基芳烃、NHC-BH₃ 络合物、氢硅烷和 4-氰基吡啶。这种多功能反应范围广泛，有 40 多个乙烯基芳烃、NHC-BH₃ 络合物和氢化硅烷的例子，导致合成各种 β-吡啶基硼烷和 β-吡啶基硅烷。此外，我们通过对药物分子进行功能化来展示该方法的潜力，展示其实际应用。值得注意的是，该反应是用简单且廉价的二苯甲酮进行的，值得注意的是，它不需要碱或任何昂贵的过渡金属的存在。