可见光诱导苄基硅烷合成苄醚（英文）  

Visible light-mediated conversion of benzylsilanes to benzyl ethers

作　　者：李伟[1,2] 杨超[1] 高国林[1] 夏吾炯[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院城市水资源和环境国家重点实验室,哈尔滨150080 [2]哈尔滨商业大学食品科学与工程重点实验室,哈尔滨150076

出　　处：《黑龙江大学自然科学学报》2016年第6期774-782,共9页Journal of Natural Science of Heilongjiang University

基　　金：Supported by the National Science Foundation of China(21272047,21372055,21302029,21472030)

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[PF_6]_2作为光催化剂,Na_2S_2O_8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)_3^(2+)-S_2O_8^(2-)和Cu^+-SO_4^(·-)。苄基硅烷经Ru(bpy)_3^(3+)和Cu^(2+)连续氧化得到苄基正离子,醇对其进行亲核进攻得到苄醚。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.

关 键 词：可见光 苄基硅烷 苄醚 有机合成 

分 类 号：O436[机械工程—光学工程]