Copper-catalyzed C–H [3 + 2] annulation of <i>N</i>-substituted anilines with α-carbonyl alkyl bromides <i>via</i> C(sp<sup>3</sup>)–Br/C(sp<sup>2</sup>)–H functionalization
作者:An-Zhu Cao、Yu-Ting Xiao、Yan-Chen Wu、Ren-Jie Song、Ye-Xiang Xie、Jin-Heng Li
DOI:10.1039/d0ob00399a
日期:——
A copper-catalyzed C–H [3 + 2] annulation of N-substituted anilines with α-carbonyl alkyl bromides for the synthesis of 3,3′-disubstituted oxindoles is developed. Tandem C–H cycloamidation reactions of various α-carbonyl alkyl bromide derivatives including tertiary-α-bromoalkyl ketone esters, malonic esters and cycloalkanes, with N-aryl or alkyl substituted anilines, can be performed using this system