【摘 要】
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This study proposes two different methods of photocatalytic-controlled and visible light-induced selective oxidation of pyr-idiniums with air as the terminal oxidant.The key to these transformations is to choose the appropriate light source and photocatal
【机 构】
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State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources,School of Chemis
论文部分内容阅读
This study proposes two different methods of photocatalytic-controlled and visible light-induced selective oxidation of pyr-idiniums with air as the terminal oxidant.The key to these transformations is to choose the appropriate light source and photocatalyst.Pyridiniums are successfully converted into pyrroles through oxygen-mediated cycloaddition,proton-coupled electron transfer (PCET),pyridine ring opening,and recyclization.The other route is that pyridiniums selectively form 4-carbonyl pyridines through free radical rearrangement/aerobic oxidation under the catalysis of cobalt (Ⅱ).
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