We herein report an atom-economic flow approach to the selective and sequential mono-, di-, and tri-functionalizations of unactivated hydrosilanes via serial organolithium reactions catalyzed by earth-abundant metal compounds. Based on the screening of various additives, we found that catalytic potassium tert-butoxide (t-BuOK) facilitates the rapid reaction of organolithiums with hydrosilanes. Using a flow microreactor system, various organolithiums bearing functional groups were efficiently generated in situ under mild conditions and consecutively reacted with hydrosilanes in the presence of t-BuOK within 1 min. We also successfully conducted the di-funtionalizations of dihydrosilane by sequential organolithium reactions, extending to a gram-scale-synthesis. Finally, the combinatorial functionalizations of trihydrosilane were achieved to give every conceivable combination of tetrasubstituted organosilane libraries based on a precise reaction control using an integrated one-flow system.

中文翻译：

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叔丁醇钾催化的连续有机锂反应对硅烷进行连续流动的Si–H官能化

本文我们报告的原子经济流的方法来选择性和顺序的单，二，和未活化的氢化硅烷的三-官能化通过由地球丰富的金属化合物催化的串行有机锂反应。基于各种添加剂的筛选，我们发现催化叔丁醇钾（t -BuOK）促进了有机锂与氢硅烷的快速反应。使用流动微反应器系统，可在温和条件下有效地原位生成各种带有官能团的有机锂，并在存在t的条件下与氢硅烷连续反应-Buok 1分钟内。我们还通过顺序的有机锂反应成功地进行了二氢硅烷的二官能化，扩展到了克级合成。最后，在使用集成式单流系统进行精确反应控制的基础上，实现了三氢硅烷的组合功能化，从而给出了每一个可以想到的四取代有机硅烷库的组合。