Synthesis, crystal structure and application in regio- and stereoselective epoxidation of allylic alcohols of a titanium binaphthyl-bridged Schiff base complex

被引：21
|
作者：
Soriente, A [1 ]
De Rosa, M [1 ]
Lamberti, M [1 ]
Tedesco, C [1 ]
Scettri, A [1 ]
Pellecchia, C [1 ]
机构：
[1] Univ Salerno, Dipartimento Chim, I-84081 Baronissi, SA, Italy
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2005年 / 235卷 / 1-2期
关键词：
binaphthyl-bridged Schiff base ligands; epoxidation; Ti(IV) complexes; allylic alcohols; microwave reactions;
D O I：
10.1016/j.molcata.2005.03.012
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 new octahedral titanium binaphthyl-bridged Schiff base complex (1) was synthesized and characterized. Analysis by H-1 and C-13-NMR spectroscopy and X-ray crystallography indicated that the C-1-symmetric cis-beta isomer is preferentially formed as one of the two possible enantiomeric couples of diasteroisomers. The catalytic behaviour of the complex 1 toward epoxidation of allylic alcohols was investigated. Using only 0.5% mol of the complex 1 the epoxyalcohols are obtained in very high regio-, chemo- and diastercoselctive way by the MW exposure of the mixture in solvent free-conditions. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 259
页数：7
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