Epoxidation of Olefins Catalyzed by Some cis-Dioxomolybdenum(VI)-Tridentate Schiff Base Complexes with tert-Butyl Hydroperoxide

被引：0

作者：

Bagherzadeh, M. ^{[1
]}

Esfahani, S. Ghazali ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Chem, Tehran, Iran

来源：

SCIENTIA IRANICA TRANSACTION C-CHEMISTRY AND CHEMICAL ENGINEERING | 2010年 / 17卷 / 02期

关键词：

Epoxidation; Olefin; cis-dioxomolybdenum complexes; Tridentate Schiff base ligands; tert-butyl hydroperoxide; OXYGEN ATOM TRANSFER; DIOXOMOLYBDENUM(VI) COMPLEXES; HYDROGEN-PEROXIDE; MOLYBDENUM COMPLEXES; LIGANDS; OXIDATION; TRIDENTATE; REACTIVITY; STABILITY; MECHANISM;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Some cis-dioxomolybdenum (VI) complexes with tridentate Schiff base ligands derived from salicylaldehyde and aminophenols, aminoalcohol or o-aminobenzenethiol were examined as catalysts for epoxidation of different aliphatic and aromatic olefins, with tert-butyl hydroperoxide as oxidant. All complexes exhibited high activity and selectivity for epoxidation of aliphatic substrates during a short time period (95% conversion of cyclooctene after 30 min). The epoxide yield increased with the nucleophilic character of olefin. The catalysts activation strongly depends on the reaction temperature and nature of the solvent. Epoxidation of olefins by these catalysts is inhibited by ligands or coordinating solvents such as alcohols.

引用

页码：131 / 138

页数：8

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