| 硅胶固载Ru(Ⅱ)Cl_2(PPh_3)_3催化苯乙酮不对称加氢 |
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| 引用本文： | 刘建红,范彬彬,郭永,李瑞丰,陈华.硅胶固载Ru(Ⅱ)Cl_2(PPh_3)_3催化苯乙酮不对称加氢[J].工业催化,2010,18(12):6-12. |
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| 作者姓名： | 刘建红 范彬彬 郭永 李瑞丰 陈华 |
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| 作者单位： | 1.煤科学与技术教育部和山西省重点实验室，太原理工大学精细化工研究所，山西 太原 030024；;2.山西大同大学化学与化工学院，山西 大同 037009；3.绿色化学与技术教育部重点实验室，;四川大学化学学院有机金属络合催化研究所，四川 成都 610064 |
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| 基金项目： | 国家自然科学基金，山西省留学基金 |
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| 摘 要： | 通过共价键联的方法将RuCl_2(PPh_3)_3配合物固载于手性二胺修饰的硅胶表面,制备了多相不对称加氢催化剂。采用等离子体发射光谱(ICP)、红外光谱(FTIR)和紫外光谱(UV—Vis)等手段对制备的催化剂进行了表征。结果表明,RuCl_2(PPh_3)_3配合物固载于硅胶表面保持了原有的结构性能。在苯乙酮不对称加氢反应中,不同手性二胺对催化反应具有明显的影响,(1S,2S)-1,2-二苯基乙二胺的手性诱导能力强于其他二胺,优化条件下,苯乙酮转化率达100%,(R)-苯乙醇的对映体过量值达50%,固体催化剂具有良好的稳定性和重复使用性。
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| 关 键 词： | 催化化学 多相手性催化剂 RuCl2(PPh3)3 硅胶 不对称加氢 苯乙酮 固载 |
Asymmetric hydrogenation of acetophenone catalyzed by RuCl2(PPh3)3 immobilized on amorphous silica |
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| LIU Jianhong,FAN Binbin,GUO Yong,LI Ruifeng,CHEN Hua.Asymmetric hydrogenation of acetophenone catalyzed by RuCl2(PPh3)3 immobilized on amorphous silica[J].Industrial Catalysis,2010,18(12):6-12. |
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| Authors: | LIU Jianhong FAN Binbin GUO Yong LI Ruifeng CHEN Hua |
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| Affiliation: | 1.Key Laboratory of Coal Science and Technology of Ministry of Education, Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;2.School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, Shanxi, China; 3.Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, ;School of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China |
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| Abstract: | A series of solid asymmetric heterogeneous catalysts were prepared through the immobilization of RuCl2 （PPh3 ）3 complex on the surface of amorphous silica, which was modified with chiral diamine, and characterized by ICP, VFIR and UV-Vis. The results showed that RuCl2 （ PPh3 ） 3 immobilized on the surface of amorphous silica kept their original structure properties. Using RuCl2 （ PPh3 ）2 immobilized on amorphous silica as asymmetric hydrogenation catalysts, the conversion of acetophenone and the enantiomeric excess value of （R）-pheny｜ethanol were attained 100% and 50%, respectively. The catalysts exhibited good stability and repeatable without loss of activity and ee value. |
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| Keywords: | catalytic chemistry heterogeneous chiral catalyst RuCl2（ PPh3 ） 3 amorphous silica asymmetric hydrogenation acetophenone immobilization |
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