Efficient catalysis of Nazarov cyclization using a cationic iridium complex possessing adjacent labile coordination sites

被引：92

作者：

Janka, M ^{[1
]}

He, W ^{[1
]}

Frontier, AJ ^{[1
]}

Eisenberg, R ^{[1
]}

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 22期

关键词：

D O I：

10.1021/ja049643v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dicationic Ir(III) complex [IrMe(CO)(dppe)(DIB)](BARF)2 having adjacent labile sites has been found to be a very effective catalyst for promoting the Nazarov cyclization of aryl vinyl and divinyl ketones. Spectroscopic evidence for a substate-catalyst complex before cyclization is presented. The efficiency of the cyclization is attributed to the electrophilicity of the Ir(III) complex and substrate activation via chelation. Copyright © 2004 American Chemical Society.

引用

页码：6864 / 6865

页数：2

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