Neutral-Eosin-Y-Photocatalyzed Silane Chlorination Using Dichloromethane
Neutral-Eosin-Y-Photocatalyzed Silane Chlorination Using Dichloromethane
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DOI：
10.1002/anie.201908556
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发表时间：
2019-08-05
影响因子：
16.6
通讯作者：
Wu, Jie
中科院分区：
文献类型：
--
作者：
Fan, Xuanzi;Xiao, Pin;Wu, Jie
氯硅烷是有机合成和材料科学中的通用试剂。一个温和的途径，现在报道的定量转化氢硅烷硅烷氯硅烷在可见光照射下使用中性曙红Y作为氢原子转移光催化剂和二氯甲烷作为氯化剂。在连续流动微管式反应器的辅助下，以高度选择性的方式实现了二氢硅烷和三氢硅烷的分步氯化。曙红Y光催化Si-H活化硅自由基的能力为方便、绿色合成有价值的硅试剂提供了新的视角。
Chlorosilanes are versatile reagents in organic synthesis and material science. A mild pathway is now reported for the quantitative conversion of hydrosilanes to silyl chlorides under visible-light irradiation using neutral eosin Y as a hydrogen-atom-transfer photocatalyst and dichloromethane as a chlorinating agent. Stepwise chlorination of di- and trihydrosilanes was achieved in a highly selective fashion assisted by continuous-flow micro-tubing reactors. The ability to access silyl radicals using photocatalytic Si-H activation promoted by eosin Y offers new perspectives for the synthesis of valuable silicon reagents in a convenient and green manner.