在此我们报道,合成了一系列新的苯并咪唑氯化物作为N-杂环卡宾(NHC)配体及其相应的通式为[PdCl 2(NHC)2 ]的钯(II)-NHC配合物。所有新化合物均通过1 H NMR,13 C NMR,IR光谱和元素分析技术进行表征。在钯(II)-NHC的存在下于150°C进行1 h的噻唑与芳基溴的直接C2-或C5-芳基化反应中,研究了钯(II)-NHC配合物的催化活性。这些配合物对噻唑直接芳基化表现出良好的催化性能。噻唑的芳基化以中等至高产率选择性地产生C 2或C 5芳基化的噻唑。
在此我们报道,合成了一系列新的苯并咪唑氯化物作为N-杂环卡宾(NHC)配体及其相应的通式为[PdCl 2(NHC)2 ]的钯(II)-NHC配合物。所有新化合物均通过1 H NMR,13 C NMR,IR光谱和元素分析技术进行表征。在钯(II)-NHC的存在下于150°C进行1 h的噻唑与芳基溴的直接C2-或C5-芳基化反应中,研究了钯(II)-NHC配合物的催化活性。这些配合物对噻唑直接芳基化表现出良好的催化性能。噻唑的芳基化以中等至高产率选择性地产生C 2或C 5芳基化的噻唑。
PEPPSI-Pd-NHC catalyzed Suzuki-Miyaura cross-coupling reactions in aqueous media
作者:Nazan Kaloğlu、İsmail Özdemir
DOI:10.1016/j.tet.2019.02.062
日期:2019.4
precursors. These compounds were used to synthesize of the PEPPSI-typepalladium NHC complexes. The structures of all compounds were characterized by 1H NMR, 13C NMR, FT-IR spectroscopy and elemental analyses. The catalytic activity of the PEPPSI-type palladium–NHC complexes has been evaluated with respect to the Suzuki-Miyauracross-couplingreactions of phenyl boronic acid with various aryl halides in aqueous
合成了一系列不对称的1,3-二取代的苯并咪唑氯化物作为N杂环卡宾(NHC)前体。这些化合物用于合成PEPPSI型钯NHC复合物。所有化合物的结构均通过1 H NMR,13 C NMR,FT-IR光谱和元素分析表征。关于苯基硼酸与各种芳基卤化物在水性介质中的Suzuki-Miyaura交叉偶联反应,已经评估了PEPPSI型钯-NHC复合物的催化活性。
Novel benzimidazolium salts and their silver complexes: Synthesis and antibacterial properties
Abstract A series of unsymmetrical N,N-disubstituted benzimidazolium salts were synthesized as N-heterocyclic carbene (NHC) precursors. These compounds were used to synthesize of N-heterocyclic carbene silver(I) complexes. New compounds were characterized by NMR and IR spectroscopies and elemental analyses. The antibacterial activity of all the compounds was tested against Gram (+)/(−) and fungal strains
Palladium(II)- N -heterocyclic carbene-catalyzed direct C2- or C5-arylation of thiazoles with aryl bromides
作者:Murat Kaloğlu、İsmail Özdemir
DOI:10.1016/j.tet.2018.03.026
日期:2018.6
their corresponding palladium(II)-NHC complexes with the general formula [PdCl2(NHC)2] were synthesized. All new compounds were characterized by 1H NMR, 13C NMR, IR spectroscopy and elemental analysis techniques. The catalytic activity of palladium(II)-NHC complexes was investigated in the direct C2- or C5-arylation of thiazoles with aryl bromides in presence of palladium(II)-NHC at 150 °C for 1 h. These
在此我们报道,合成了一系列新的苯并咪唑氯化物作为N-杂环卡宾(NHC)配体及其相应的通式为[PdCl 2(NHC)2 ]的钯(II)-NHC配合物。所有新化合物均通过1 H NMR,13 C NMR,IR光谱和元素分析技术进行表征。在钯(II)-NHC的存在下于150°C进行1 h的噻唑与芳基溴的直接C2-或C5-芳基化反应中,研究了钯(II)-NHC配合物的催化活性。这些配合物对噻唑直接芳基化表现出良好的催化性能。噻唑的芳基化以中等至高产率选择性地产生C 2或C 5芳基化的噻唑。