We report the use of a rhodium(II) dimer in visible light photoredox catalysis for the aerobic oxidation of arylboronic acids to phenols under mild conditions. Spectroscopic and computational studies indicate that the catalyst Rh2(bpy)2(OAc)4 (1) undergoes metal-metal to ligand charge transfer upon visible light irradiation, which is responsible for catalytic activity. Further reactivity studies demonstrate that 1 is a general photoredox catalyst for diverse oxidation reactions.

中文翻译：

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双金属光氧化还原催化：可见光促进的Dirhodium（II）催化芳基硼酸的好氧羟基化反应。

我们报告了在温和的条件下在可见光光氧化还原催化中使用铑（II）二聚体将芳基硼酸好氧氧化为苯酚。光谱和计算研究表明，催化剂Rh2（bpy）2（OAc）4（1）在可见光照射下会发生金属-金属到配体的电荷转移，这是催化活性的原因。进一步的反应性研究表明1是用于多种氧化反应的通用光氧化还原催化剂。