Nickel-Catalyzed Transformation of Diazoacetates to Alkyl Radicals Using Alcohol as a Hydrogen Source
作者:Jingjing Zhao、Pan Li、Yaohua Xu、Yixin Shi、Fuwei Li
DOI:10.1021/acs.orglett.9b03610
日期:2019.12.6
transformation of diazoacetates to α-carbonyl methylene radicals has been disclosed in the presence of hyperoxide using ethanol as a hydrogen source and solvent. This strategy is successfully applied in the formation of indolin-2-ones or 1,4-dicarbonyl compounds from acrylamides or enamides in moderate to good yields. These reactions undergo radical addition onto C-C double bonds followed by a cyclization/oxidation
已经公开了在高氧化物存在下使用乙醇作为氢源和溶剂的镍催化的重氮乙酸酯向α-羰基亚甲基自由基的转化。该策略已成功应用于以中等至良好收率由丙烯酰胺或烯酰胺形成吲哚啉-2-酮或1,4-二羰基化合物的过程。这些反应在CC双键上进行自由基加成,然后分别进行环化/氧化或氧化/水解过程。