Visible Light Photoredox Catalysis Mediated Elementary Steps in Organometallic Reactions

Many organometallic reactions involve three elementary steps including oxidative addition, transamination, and reductive elimination. But sometimes very high barrier exists for this approach, leading to the failure of the reactions. The key development in recent reports is the implementation of visible-light photocatalysts as a means to induce the desired redox processes in a mild and selective manner. In this context, organometallic reactions mediated by photoredox catalysts could give rise to novel reactivity, thus this area has drawn much attention in organic chemistry community. In this review, prominent examples from the recent literatures are organized on the basis of the elementary transformation enabled by photoredox catalysis.