[2+2] cycloadditions by oxidative visible light photocatalysis.

[2+2] cycloadditions by oxidative visible light photocatalysis.
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DOI:
10.1021/ja103934y
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发表时间:
2010-06-30
影响因子:
15
通讯作者:
Yoon, Tehshik P.
Yoon, Tehshik P.
中科院分区:
化学1区
文献类型:
--
作者:
Ischay, Michael A.;Lu, Zhan;Yoon, Tehshik P.

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光化学反应是显着的,因为它们能够容易地组装环丁烷和其他应变环系统,这些环系统难以使用其他常规合成方法构建。我们以前已经表明,Ru(bpy)32+是一种有效的光催化剂,促进缺电子烯烃与可见光的[2+2]环加成反应。在这里,我们表明,Ru(bpy)32+也是一个有效的光催化剂的[2+2]环加成的富电子烯烃。这种转变是由Ru(bpy)32+的多功能光电化学性质实现的,其能够在适当条件下对感兴趣的有机底物进行单电子还原或单电子氧化。
Photochemical reactions are remarkable for their ability to easily assemble cyclobutanes and other strained ring systems that are difficult to construct using other conventional synthetic methods. We have previously shown that Ru(bpy)32+ is an efficient photocatalyst that promotes the [2+2] cycloadditions of electron-deficient olefins with visible light. Here, we show that Ru(bpy)32+ is also an effective photocatalyst for the [2+2] cycloaddition of electron-rich olefins. This transformation is enabled by the versatile photoelectrochemical properties of Ru(bpy)32+, which enables either one-electron reduction or one-electron oxidation of interesting organic substrates under appropriate conditions.
DOI: 10.1021/ja00234a014
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