Acridinium-Based Photocatalysts: A Sustainable Option in Photoredox Catalysis

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• 作者：Amruta Joshi-Pangu ; François Lévesque ; Hudson G. Roth ; Steven F. Oliver ; Louis-Charles Campeau ; David Nicewicz ; Daniel A. DiRocco
• 刊名：Journal of Organic Chemistry
• 出版年：2016
• 出版时间：August 19, 2016
• 年：2016
• 卷：81
• 期：16
• 页码：7244-7249
• 全文大小：332K
• 年卷期：0
• ISSN：1520-6904

文摘

The emergence of visible light photoredox catalysis has enabled the productive use of lower energy radiation, leading to highly selective reaction platforms. Polypyridyl complexes of iridium and ruthenium have served as popular photocatalysts in recent years due to their long excited state lifetimes and useful redox windows, leading to the development of diverse photoredox-catalyzed transformations. The low abundances of Ir and Ru in the earth’s crust and, hence, cost make these catalysts nonsustainable and have limited their application in industrial-scale manufacturing. Herein, we report a series of novel acridinium salts as alternatives to iridium photoredox catalysts and show their comparability to the ubiquitous [Ir(dF-CF₃-ppy)₂(dtbpy)](PF₆).