Base-mediated cascade amidination/<i>N</i>-alkylation of amines by alcohols
作者:Chunyan Zhang、Zuyu Liang、Fenghong Lu、Xiaofei Jia、Guoying Zhang、Mao-Lin Hu
DOI:10.1039/d0cc04831c
日期:——
amidination/N-alkylation reaction of amines by alcohols has been developed. For the first time, nitriles have been identified as an efficient and benign water acceptor reagent in N-alkylation. Notably, the procedure tolerates a series of functional groups, such as methoxyl, halo, vinyl and hetero groups, providing a convenient method to construct different substituted diamino compounds, 15N labeled
Ruthenium(<scp>ii</scp>) complexes with N-heterocyclic carbene–phosphine ligands for the <i>N</i>-alkylation of amines with alcohols
作者:Ming Huang、Yinwu Li、Xiao-Bing Lan、Jiahao Liu、Cunyuan Zhao、Yan Liu、Zhuofeng Ke
DOI:10.1039/d1ob00362c
日期:——
A large variety of (hetero)aromatic amines and primary alcohols were efficiently converted into mono-N-alkylated amines in good to excellent isolated yields. Notably, aliphatic amines, challenging methanol and diamines could also be transformed into the desired products. Detailed control experiments and density functional theory (DFT) calculations provide insights to understand the mechanism and the
sustainable or green reaction that has received a lot of attention in recent years and is preferentially catalyzed by Ir or Ru complexes is the alkylation of amines by alcohols. It is based on the borrowing hydrogen or hydrogen autotransfer concept. Herein, we report on the Co‐catalyzed alkylation of aromaticamines by alcohols. The reaction proceeds undermildconditions, and selectively generates monoalkylated
A novel nickel(I) complex (di(2,2′-(1-phenyl-1H-1,2,4-triazole-3,5-diyl)dipyridine))(dibromine) nickel(I)bromide ([Ni-N4]Br) exhibited extremely high efficiency toward the (de)hydrogenative alkylation of amines and alkyl heteroarenes by alcohols. The catalytic performance can be attributed to the functionalized nitrogen ligand, which adopts a cationic coordinationmode and the facile dissociation of
一种新型镍(I)配合物(二(2,2'-(1-苯基-1 H -1,2,4-triazole-3,5-diyl)dipyridine))(二溴)镍(I)溴化物([ Ni-N 4 ]Br) 对胺和烷基杂芳烃通过醇的(脱)氢化烷基化表现出极高的效率。催化性能可归因于功能化的氮配体,它采用阳离子配位模式和配位水的容易解离。这种可持续转化适用于各种醇,在无溶剂条件下具有良好的官能团耐受性和高选择性。该合成策略为构建功能化胺和不饱和N-杂芳族衍生物提供了一种绿色高效的方法。