Polymer-bound chiral (salen)Mn(III) complex as heterogeneous catalyst in rapid and clean enantioselective epoxidation of unfunctionalised olefins

被引：125

作者：

Minutolo, F

Pini, D

Salvadori, P

机构：

[1] UNIV PISA,DIPARTIMENTO CHIM & CHIM IND,CNR,CTR STUDI MACROMOL STEREOORDINATE & OTTICAMENTE A,I-56126 PISA,ITALY

[2] SCUOLA NORMALE SUPER PISA,I-56127 PISA,ITALY

来源：

TETRAHEDRON LETTERS | 1996年 / 37卷 / 19期

关键词：

D O I：

10.1016/0040-4039(96)00550-3

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The application of a new polystyrene-divinylbenzene system containing an optically active (salen)Mn(III) complex in asymmetric epoxidation of unfunctionalised olefins is reported. This system showed a remarkably high reaction speed in the conditions described. Reaction outcomes drastically varied, in terms of enantioselectivity and cis-trans isomerization extent, upon the terminal oxidant employed (mCPBA/NMO and MMPP). Reuse of the catalyst was extremely efficient for several cycles. Interesting values of ee were obtained for styrene (15%) and cis-beta-methylstyrene (41%). (C) 1996 Elsevier Science Ltd

引用

页码：3375 / 3378

页数：4

共 18 条

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