Redox‐Divergent Synthesis of Fluoroalkylated Pyridines and 2‐Pyridones through Cu‐Catalyzed N−O Cleavage of Oxime Acetates
作者:Dachang Bai、Xueli Wang、Guangfan Zheng、Xingwei Li
DOI:10.1002/anie.201802311
日期:2018.5.28
Cu‐catalyzed redox‐divergent [3+3] coupling of oxime esters with β‐CF3 enones and acrylates is described. This redox‐neutral coupling with enones and acrylates affords trifluoromethylated pyridines and pyridones, respectively. Under reductive conditions, difluoromethylated pyridines, difluoromethlated pyridones, and trifluoromethylated dihydropyridones are obtained. The reactions occur under mild conditions
铜催化的氧化还原-发散[3 + 3]与β-CF肟酯的偶合3个烯酮和丙烯酸酯进行说明。这种与烯酮和丙烯酸酯的氧化还原中性偶联分别提供了三氟甲基化吡啶和吡啶酮。在还原条件下,获得二氟甲基化吡啶,二氟甲基化吡啶酮和三氟甲基化二氢吡啶酮。反应在温和条件下进行,具有较宽的底物范围和区域/氧化还原选择性。