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