Efficient visible light photocatalysis of [2+2] enone cycloadditions

被引：945

作者：

Ischay, Michael A. ^{[1
]}

Anzovino, Mary E. ^{[1
]}

Du, Juana ^{[1
]}

Yoon, Tehshik P. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 39期

关键词：

D O I：

10.1021/ja805387f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report that Ru(bipy)(3)Cl(2) can serve as a visible light photocatalyst for [2+2] enone cycloadditions. A variety of aryl enones participate readily in the reaction, and the diastereoselectivity in the formation of the cyclobutane products is excellent. We propose a mechanism in which a photogenerated Ru(bipy)(3)(+) complex promotes one-electron reduction of the enone substrate, which undergoes subsequent radical anion cycloaddition. The efficiency of this process is extremely high, which allows rapid, high-yielding [2+2] cyclizations to be conducted using incident sunlight as the only source of irradiation.

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页码：12886 / +

页数：3

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