TEMPO-Promoted Mono- and Bisimidation of Tertiary Anilines: Synthesis of Symmetric and Unsymmetric <i>N</i>-Mannich Bases
作者:Xiu Juan Xu、Adila Amuti、Wen Jing Hu、Qiaerbati Adelibieke、Abudureheman Wusiman
DOI:10.1021/acs.joc.2c00700
日期:2022.7.15
A TEMPO-promoted method was developed for the synthesis of symmetric bis-N-Mannich bases via sequential activation of two α,α′-amino C(sp3)–H bonds of N,N-dimethylanilines under mild conditions. This methodology was further extended for monoimidation of α-amino-functionalized methylanilines to give unsymmetric N-Mannich bases in good to high yields. Several control experiments were performed, and the
开发了一种 TEMPO 促进的方法,用于在温和条件下通过顺序激活N , N-二甲基苯胺的两个 α,α'-氨基 C(sp 3 )-H 键来合成对称双-N-曼尼希碱基。该方法进一步扩展用于 α-氨基官能化甲基苯胺的单酰亚胺化,以良好至高产率提供不对称N-曼尼希碱。进行了几个对照实验,偶联反应结果表明氧铵 (TEMPO + ) 物质参与了反应。