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离子液体中Mn(Salen)催化仲醇的氧化反应研究
引用本文:景色,李臻,夏春谷. 离子液体中Mn(Salen)催化仲醇的氧化反应研究[J]. 分子催化, 2008, 22(6)
作者姓名:景色  李臻  夏春谷
作者单位:1. 中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州730000;中国科学院研究生院,北京100080
2. 中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州730000
基金项目:Project 20703050,20625308,20373082 supported by National Nature Science Foundation of China
摘    要:以PhI(OAc)2为氧化剂,考察了1,3-二烷基咪唑硫酸酯系列离子液体中Mn(Salen)催化仲醇氧化的反应. 结果表明, 在MMISM-CH2Cl2(1:4,v:v)混合溶剂中, 反应条件为n((-苯乙醇): n(醋酸碘苯): n(催化剂1c)=50: 70: 1时, (-苯乙醇的转化率可以达到97.8%, 产物苯乙酮的选择性为100%, 远高于在纯CH2Cl2中的结果, 也要好于[bmim]BF4和[bmim]PF6对该反应的促进作用. 此外, BMISM及BEISE对催化剂1c有较好的稳定作用,催化剂可以重复使用.

关 键 词:仲醇  氧化  离子液体

Oxidation of sec-Alcohols Catalyzed by Mn(Salen) in Ionic Liquids
JING Se,LI Zhen,XIA Chun-gu. Oxidation of sec-Alcohols Catalyzed by Mn(Salen) in Ionic Liquids[J]. Journal of Molecular Catalysis (China), 2008, 22(6)
Authors:JING Se  LI Zhen  XIA Chun-gu
Affiliation:JING Se 1,2,LI Zhen 1,XIA Chun-gu 1(1.State Key Laboratory for Oxo Synthesis , Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100080,China)
Abstract:Oxidation of alcohols to the corresponding carbonyl compounds plays a central role in organic chemistry[1]. Traditionally, the transformation is performed with stoichiometric and toxic oxidants, such as o-iodoxybenzoic acid (IBX), permanganate, chromium reagents, which are cost-ineffective and yield large quantities of noxious waste[2~4]. Therefore, it is not surprising that in the area of oxidative transformations one major goal is the replacement of stoichiometric procedure with catalytic procedures[5~6]. On the other hand, salen as a kind of ligand shows wide applicability and its metal complexes act as highly selective catalysts for a variety of reactions such as epoxidation[7~8], cyclopropanation[9], asymmetric epoxide ring-opening reactions[10], kinetic resolution of sec-alcohols[11] and so on. In our research group, Li Jing-wei employed Mn(Salen) complexes to oxidize sec-alcohols by PhI(Oac)2 in CH3CN with excellent yield in 2004[12].
Keywords:Mn(Salen)  Mn(Salen)  Sec-alcohols  Oxidation  Ionic liquids
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