Photocatalysis by Phenothiazine Dyes: Visible-Light-Driven Oxidative Coupling of Primary Amines at Ambient Temperature

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• 作者：Ji Hoon Park ; Kyoung Chul Ko ; Eunchul Kim ; Nojin Park ; Ju Hong Ko ; Do Hyun Ryu ; Tae Kyu Ahn ; Jin Yong Lee ; Seung Uk Son
• 刊名：Organic Letters
• 出版年：2012
• 出版时间：November 2, 2012
• 年：2012
• 卷：14
• 期：21
• 页码：5502-5505
• 全文大小：264K
• 年卷期：v.14,no.21(November 2, 2012)
• ISSN：1523-7052

文摘

New phenothiazine based organic dyes were prepared for visible-light-driven organic transformations. The 3,7-disubstituted phenothiazine derivatives showed visible light absorption and reversible one-electron oxidation behavior. In the presence of 0.5 mol % of 3,7-disubstituted phenothiazines, primary benzylamines showed oxidative coupling under visible light irradiation from a blue LED. The electronic effect of substituents in phenothiazine dyes was observed in catalytic activities. The mechanistic pathway of oxidative coupling was discussed based on the detection of H₂O₂ after the reaction.