HPLC of Formula: 28903-71-1. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Photocatalyst-controlled and visible light-enabled selective oxidation of pyridinium salts. Author is Peng, Xiang-Jun; He, Hai-Ping; Liu, Qian; She, Kun; Zhang, Bao-Qi; Wang, Heng-Shan; Tang, Hai-Tao; Pan, Ying-Ming.
This study proposed two different methods of photocatalytic-controlled and visible light-induced selective oxidation of pyridiniums with air as the terminal oxidant. The key to these transformations was to choose the appropriate light source and photocatalyst. Pyridiniums were successfully converted into pyrroles through oxygen-mediated cycloaddition, proton-coupled electron transfer (PCET), pyridine ring opening, and recyclization. The other route was that pyridiniums selectively form 4-carbonyl pyridines through free radical rearrangement/aerobic oxidation under the catalysis of cobalt (II).
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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com