Facile amidation of esters with aromatic amines promoted by lanthanide tris (amide) complexes
作者:Zhao Li、Chenjun Guo、Jue Chen、Yingming Yao、Yunjie Luo
DOI:10.1002/aoc.5517
日期:2020.4
The development of catalysts capable of catalyzing amidation of esters with amines to construct amides under mild conditions is of great importance. Compared to aliphatic amines, the direct catalytic amidation of esters with less nucleophilic aromatic amines is rather difficult. Employing simple lanthanide tris (amide) complexes Ln[N (SiMe3)2]3(μ‐Cl)Li (THF)3 as the catalysts, it was found a broad
Regioselective benzanilide bromination that generates either regioisomer from the same starting material is desirable. Herein, we develop switchable site-selective C(sp2)-H bromination by promoter regulation. This protocol leads to regiodivergent brominated benzanilide starting from the single substrate via selection of promoters. The protocol demonstrates excellent regioselectivity and good tolerance