Synthesis, structural characterization of benzimidazole-functionalized Ni(II) and Hg(II) N-heterocyclic carbene complexes and their applications as efficient catalysts for Friedel–Crafts alkylations
作者:Guoli Huang、Hongsheng Sun、Xiaojie Qiu、Yingzhong Shen、Juli Jiang、Leyong Wang
DOI:10.1016/j.jorganchem.2011.04.039
日期:2011.9
L1 = 3-(1-ethyl-1H-benzimidazol-2-yl)methyl)-1-((6-methylpyridin-2-yl)methyl)imidazolyl-idene), [Ni(L2)2(CH3CN)](PF6)2 (3b, L2 = 3-(1-ethyl-1H-benzimidazol-2-yl)methyl)-1-((6-methylpyridin-2-yl)-methyl)benzimidazolylidene), and [Hg(L1)2(CH3CN)2](PF6)2 (4) have been successfully prepared and fully characterized by NMR, ESI-MS spectroscopy, and X-ray diffraction analysis. The nickelcomplexes reveal
This work discloses that a simple change in the anion of a copper(II) reagent along with the reaction solvent can dramatically alter the course of a Cp*RhIII‐catalyzed C−H activation–annulation reaction leading to completely switchable chemoselective products. The nature of the anion in terms of its coordinating ability and basicity, and also the polarity of the solvent have been found to be the crucial
Highly effective luminescence stemmed from thermally activated delayed fluorescence (TADF) and phosphorescence for the new four-coordinate copper(I) complexes containing N-heterocyclic carbene (NHC) ligands
作者:Jinglan Wang、Hongyun Chen、Shengxian Xu、Qingzhi Su、Feng Zhao、Haifeng He
DOI:10.1016/j.jphotochem.2019.112104
日期:2020.1
N-heterocyclic carbene (NHC) copper(I) complexes, [Cu(Ph-BenIm-methylPy)(POP)]PF6 (1), and [Cu(Ph-Im-methylPy)(POP)]PF6 (2) Ph-BenIm-methylPy = 3-benzyl-1-(6-methyl-pyridin-2-yl)-1H-benzimidazolylidene, Ph-Im-methylPy = 3-benzyl-1-(6-methyl-pyridin-2-yl)-1H-imidazolylidene, POP = bis[2-diphenylphosphino]-phenyl)ether) have been synthesized and characterized. Those complexes exhibit blue to green emission
Synthesis of Benzodiazepines Through Ring Opening/Ring Closure of Benzimidazole Salts
作者:Sheng Tao、Qingqing Bu、Qianqian Shi、Donghui Wei、Bin Dai、Ning Liu
DOI:10.1002/chem.201905828
日期:2020.3.12
construction of the benzodiazepine ring derivatives are based on the condensation reactions of two highly functionalized synthons. The development of synthesis for these compounds, however, is hampered by the regioselectivity and atom economy. In this work, a one‐step synthesis of pyrido‐benzodiazepine backbones and its analogues is achieved through continuous ring‐opening hydrolysis of benzimidazole salts