Nickel-Catalyzed Claisen Condensation Reaction between Two Different Amides
作者:Jiajia Chen、Man Xu、Subeen Yu、Yuanzhi Xia、Sunwoo Lee
DOI:10.1021/acs.orglett.0c00485
日期:2020.3.20
A nickel-catalyzed Claisen condensation reaction between two amides, where one possesses an α-proton, for the synthesis of β-ketoamides was developed. Ni(glyme)Cl2 and terpyridine serve as the active catalysts in the presence of Mn and LiCl. N,N-Methylphenyl and N,N-diphenyl benzamide derivatives react with cyclic and noncyclic amides to give their corresponding β-ketoamides in moderate to good yields
Hypervalent Iodine(III)-Mediated Oxidative Dearomatizing Cyclization of Arylamines
作者:Cong-Yang Jin、Ji-Yuan Du、Chao Zeng、Xian-He Zhao、Ye-Xing Cao、Xiang-Zhi Zhang、Xin-Yun Lu、Chun-An Fan
DOI:10.1002/adsc.201400191
日期:2014.8.11
AbstractAn oxidative dearomatizing cyclization of arylamines promoted by iodobenzene bis(trifluoroacetate) [PhI(CF3CO2)2] has been explored, leading to a novel synthetic approach to functionalized spirocyclic building blocks containing the structurally unique dieniminium moiety. This unprecedented methodology, featuring oxidative dearomatization and carbon‐carbon bond‐forming cyclization, to some extent, not only expands the synthetic potential of hypervalent iodine chemistry, but also enriches the oxidation chemistry of arylamines.magnified image