Epoxidation of olefins catalyzed by molybdenum-siloxane compounds

被引：9

作者：

Abrantes, M

Valente, AA

Pillinger, M

Gonçalves, IS

Rocha, J

Romao, CC

机构：

[1] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-2781901 Oeiras, Portugal

[2] Univ Aveiro, CICECO, Dept Chem, P-3810193 Aveiro, Portugal

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2002年 / 5卷 / 12期

关键词：

metallasiloxanes; molybdenum; oxomolybdenum complexes; epoxidations; tert-butylhydroperoxide;

D O I：

10.1016/S1387-7003(02)00642-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The triphenylsiloxy complex MoO2(OSiPh3)(2) and a related polyhedral metallasiloxane formulated as [MoO2(O2SiPh2)](n) have been tested as catalysts for the liquid phase epoxidation of cyclic olefins by tert-butylhydroperoxide at 55 degreesC. The initial activities increased in the order 1-octene < trans-2-octene < cyclododecene < cyclooctene and the corresponding epoxides were the only observed products. The best results were obtained without the addition of any co-solvents (other than decane), forming solid-liquid systems. Cyclooctene oxide was obtained in quantitative yield within 7.5 h of reaction, and the solid catalysts could be recycled without measurable loss of activity. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1069 / 1072

页数：4

共 16 条

[1] SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF THE TRINUCLEAR BARIUM DISILOXANES [BA3(OSIPH2OSIPH2O)3(TETRAGLYME)2] AND [BA3(OSIPH2OSIPH2O)3(HMPA)5(H2O)], CONTAINING AN UNUSUAL BA3O7 CORE [TETRAGLYME = ME(OCH2CH2)4OME, HMPA = (ME2N)3P=O] [J].