Environmentally friendly and highly efficient alkenes epoxidation system consisting of [π-C5H5N(CH2)11CH3]3PW4O32/H2O2/ethyl acetate/olefin

被引：42

作者：

Zhao, Wei ^{[1
]}

Ma, Baochun ^{[1
]}

Hua, Hui ^{[1
]}

Zhang, Yingshuai ^{[1
]}

Ding, Yong ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 14期

关键词：

epoxidation; heteropolyoxotungstate; recyclable; ethyl acetate; P-31; NMR;

D O I：

10.1016/j.catcom.2008.06.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The epoxidation of alkenes was successfully catalyzed by a recyclable and environmentally benign catalytic system: [pi-C5H5N(CH2)(11)CH3](3)[PW4O32]/H2O2/ethyl acetate/olefin. This new catalytic system not only capable of catalyzing homogeneous epoxidation of alkenes with unique reaction-controlled phase transfer characters, but also avoids the use of chlorinated solvents. The reactions were conducted in a biphasic mixture of aqueous H2O2/ethyl acetate, and many kinds of alkenes can be efficiently converted to the corresponding epoxides in high yields. The catalyst could be easily recovered and reused after reaction without loss activity. The fresh catalyst, used one and catalytically active species were characterized by P-31 NMR. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：2455 / 2459

页数：5

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