中文摘要：

研究了可见光诱导苄基硅烷合成苄醚的方法，苄基硅烷与醇的醚化反应以Ru（bpy）3[PF6]2作为光催化剂，Na2S2O8作为氧化剂，CuCl作为添加剂，反应体系在蓝光LED照射下反应2-24小时，相应产品获得良好的收率。机理研究表明反应涉及两个催化体系，分别是Ru（bpy）2/3＋-S2O2/8-和Cu＋-SO4-。苄基硅烷经Ru（bpy）3/3＋和Cu2＋连续氧化得到苄基正离子，醇对其进行亲核进攻得到苄醚。

英文摘要：

A novel approach for preparation of benzyl ethers from benzylsilanes, based on a visible light mediated reaction, has been developed. Etherification reactions of benzylsilanes with alcohols were car- ried out in presence of Ru（bpy）3[PF6]2 as a photocatalyst, using Na2S2O2 as an oxidant, and CuC1 as an additive, under blue light irradiation for 2 - 24 h. The corresponding products were obtained with good yields. The possible mechanism was suggested due to two catalytic cycles for Ru （bpy）2/3 ＋ -52O2/8 - and Cu ＋ -SQ4-. The benzylsilanes were successively oxidized to benzyl cations by Ru （bpy）33 ＋ and Cu2＋ , which were then attacked by nucleophilic alcohols to afford ethers.