Visible‐Light‐Induced Metal‐Free Allylic Oxidation Utilizing a Coupled Photocatalytic System of g‐C3N4 and N‐Hydroxy Compounds
Visible‐Light‐Induced Metal‐Free Allylic Oxidation Utilizing a Coupled Photocatalytic System of g‐C3N4 and N‐Hydroxy Compounds
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DOI：
10.1002/adsc.201100175
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发表时间：
2011-06
影响因子：
5.4
通讯作者：
Pengfei Zhang;Yong Wang;Jia Yao;Congmin Wang;Chao Yan;M. Antonietti;Haoran Li
中科院分区：
文献类型：
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作者：
Pengfei Zhang;Yong Wang;Jia Yao;Congmin Wang;Chao Yan;M. Antonietti;Haoran Li
石墨碳氮化物（g-C3 N4）和N-羟基化合物可作为非金属光催化体系，在温和条件下活化O2进行选择性烯丙基氧化，避免了使用任何金属衍生物或有机氧化剂。有趣的是，这种新型的光催化体系对醛的生成具有非常高的选择性，特别是在甲苯的氧化中。该光催化体系结合了g-C3 N4的独特性质（表面碱性、半导体特性、高稳定性）和对硝酰基自由基的显著催化氧化活性，为C-H键的活化开辟了一条温和而有效的途径。
Graphitic carbon nitride (g-C 3 N 4 ) and N-hydroxy compounds can function as a non-metal photocatalytic system to activate O 2 for the selective allylic oxidation under mild conditions, avoiding the employment of any metal derivative or organic oxidizing agents. Interestingly, the novel photocatalytic system affords a remarkably high selectivity towards the formation of aldehydes, especially in the oxidation of toluene. By combining the unique nature of g-C 3 N 4 (surface basicity, semiconductor features, high stability) and the remarkable catalytic oxidation reactivity of nitroxyl radicals, this photocatalytic system opens up a mild and efficent access for C―H bond activation.