Epoxidation of alkenes catalyzed by some molybdenum(0) and molybdenum(IV) complexes

被引：7

作者：

Acharya, Sitaram ^{[1
]}

Hanna, Tracy A. ^{[1
]}

机构：

[1] Texas Christian Univ, Dept Chem, Ft Worth, TX 76129 USA

来源：

POLYHEDRON | 2016年 / 107卷

关键词：

Epoxidation; Molybdenum; Precatalyst; Catalysis; 1,3,5-triaza-7-phosphaadamantane; TRANSITION-METAL-COMPLEXES; ALKYL HYDROPEROXIDES; TERTIARY PHOSPHINE; DAPTA COMPLEXES; OLEFINS; WATER; CHEMISTRY; LIGANDS; PTA; COORDINATION;

D O I：

10.1016/j.poly.2016.01.022

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Catalytic epoxidations of styrene, cyclohexene, 1-octene, and 3,3-dimethyl-1-butene have been explored utilizing a variety of molybdenum(0) and molybdenum(IV) complexes as precatalysts and tert-butylhydroperoxide (TBHP) as oxidant The catalytic activities of the complexes MoCl4(CH3CN)(2), Mo(CO)(3)(PTA)(3) (PTA = 1,3,5-triaza-7-phosphaadamantane), Mo(CO)(3)(Mes), and a molybdenum(IV) calix[4]arene salt, [Et3NH][Mo((BuC4)-Bu-t)Cl(CH3CN)] have been investigated. The progress of reactions was monitored with reference to an internal standard by means of H-1 NMR spectroscopy. Most of the complexes were found to be effective precatalysts with low catalyst loadings, giving rise to good to excellent conversion of alkenes and yield of the epoxides with the formation of minimal amount of corresponding diol and other side products. The catalytic reactions were found to be most efficient between 100 and 110 degrees C in minimal solvent or without added solvent. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：113 / 123

页数：11

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