N -(Pyridin-2-yl)benzamide: efficient ligand for the nickel catalyzed Chan–Lam cross-coupling reaction
作者:Srinivas Keesara
DOI:10.1016/j.tetlet.2015.10.047
日期:2015.12
An efficient protocol for the Chan–Lam cross-coupling reactions of arylboronicacids with aryl or alkyl amines has been developed by employing simple N-(pyridin-2-yl)benzamide ligand with Ni(OAc)2·4H2O in the presence of TMG base. The reaction proceeded well with high yields by employing various N-nucleophiles at low catalytic loadings.
N-heterocyclic carbene-Pd(II)-2-methyl-4,5-dihydrooxazole complex-catalyzed highly chemoselective mono-amination of dichlorobenzenes
作者:Kai-Xin Sun、Jin-Hui Zhou、Qian-Wei He、Li-Xiong Shao、Jian-Mei Lu
DOI:10.1016/j.tet.2020.130944
日期:2020.2
The palladium-catalyzed chemoselective mono-amination of dichlorobenzenes was reported in this paper. Under the suitable conditions, allreactions involving the threeisomers of dichlorobenzenes with various secondary and primary amines in the presence of a well-defined N-heterocyclic carbene-palladium(II)-2-methyl-4,5-dihydrooxazole complex, gave the desired mono-aminated products in moderate to high