ethyl diazoacetate, diarylamines, and styrene-type alkenes is described. This novel 1,2-difunctionalization of alkenes can be readily achieved under a simple operation and mild conditions, affording γ-amino esters as major products. The reaction proceeds through the generation of carbon-centered radicals from diazo compounds by a visible-light-promoted proton-coupled electron transfer (PCET) process.
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
A nickel-catalyzed oxidative coupling of zinc amides with organomagnesium compounds selectively produces diarylamines under mild reaction conditions, with tolerance for chloride, bromide, hydroxyl, ester, and ketone groups. A diamine is bis-monoarylated. A bromoaniline undergoes N-arylation followed by Kumada-Tamao-Corriu coupling in one pot. The reaction may proceed via oxidatively induced reductive elimination of a nickel species.
Aliphatic CH, N-insertion versus aromatic N-substitution in the reaction of arylnitrenium-boron trifluoride complexes with methylated benzenes
作者:Piero Spagnolo、Paolo Zanirato
DOI:10.1016/s0040-4039(00)95887-8
日期:1987.1
SPAGNOLO P.; ZANIRATO P., TETRANEDRON LETT., 28,(1987) N 9, 961-964