Epoxidation by layered double hydroxide-hosted catalysts.: Catalyst synthesis and use in the epoxidation of R-(+)-limonene and (-)-α-pinene using molecular oxygen

被引：33

作者：

Bhattacharjee, S ^{[1
]}

Anderson, JA ^{[1
]}

机构：

[1] Univ Dundee, Div Phys & Inorgan Chem, Dundee DD1 4HN, Scotland

来源：

CATALYSIS LETTERS | 2004年 / 95卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

chiral salen-manganese(III); layered double hydroxide; LDH host catalyst; R-(+)-limonene; (-)-alpha-pinene; epoxidation; heterogeneous catalysis;

D O I：

10.1023/B:CATL.0000027284.86112.5a

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：

A novel chiral sulphonato-salen-manganese(III) complex has been intercalated into a Zn(II)-Al(III) layered double hydroxide (LDH) host to produce a stable heterogeneous epoxidation catalyst. Powder X-ray diffraction, IR and UV-Visible ( solid) spectroscopy and TGA confirmed the successful intercalation of the Mn complex within the LDH gallery height. The intercalated sulphonato-salen-manganese(III) complex was found to be an effective heterogeneous catalyst for the stereoselective epoxidation of R-(+)-limonene and (-)-alpha-pinene at room temperature and using molecular oxygen at atmospheric pressure as oxidant. At close to 100% conversion, R-(+)- limonene was converted into the corresponding epoxide with 93% selectivity and 43% de (diastereomeric excess), whereas (-)-alpha-pinene was converted with 93% selectivity and 98% de. The catalyst could be recycled without loss of efficiency.

引用

页码：119 / 125

页数：7

共 34 条

[1] WATER-SOLUBLE COBALT(II) COMPLEXES OF NN'-SUBSTITUTED BIS(SALICYLALDIMINE-5-SULPHONIC ACIDS) - OXYGEN-CARRYING PROPERTIES AND CONVERSION INTO COBALT(III) ORGANO-METALLIC COMPOUNDS [J].