metallated with Ag2O in dichloromethane at room temperature to give novel silver(I)–NHC complexes. Structures of these benzimidazolium salts and silver(I)–NHC complexes were characterized on the basis of elemental analysis, 1H NMR, 13C NMR, IR and LC–MS spectroscopic techniques. A series of benzimidazolium salts and silver(I)–NHC complexes were tested against standard bacterial strains: Enterococcus faecalis
合成了新的苯并咪唑鎓盐作为N杂环卡宾(NHC)前体,将这些NHC前体在室温下用Ag 2 O在二氯甲烷中金属化,得到新的银(I)–NHC配合物。在元素分析,1 H NMR,13 C NMR,IR和LC-MS光谱技术的基础上,表征了这些苯并咪唑鎓盐和银(I)-NHC配合物的结构。测试了一系列苯并咪唑盐和银(I)-NHC复合物对标准细菌菌株的测试:粪肠球菌,金黄色葡萄球菌,大肠杆菌,铜绿假单胞菌和真菌菌株:白色念珠菌和热带念珠菌。结果表明,苯并咪唑鎓盐抑制了所有细菌和真菌菌株的生长,并且所有的银(I)-NHC复合物都对不同的微生物表现出良好的活性。
Half-sandwich ruthenium-carbene catalysts: Synthesis, characterization, and catalytic application in the N-alkylation of amines with alcohols
作者:Murat Kaloğlu
DOI:10.1016/j.ica.2019.119163
日期:2019.12
the synthesis and characterization of new half-sandwich ruthenium complexes containing oxygen functionalised N-aryl and N-alkyl benzimidazol-2-ylidene ligands have been reported. All ruthenium complexes were tested as catalysts for a wide range of substrates in the N-alkylation of secondary cyclic amines such as pyrrolidine and piperidine, and 4-methylaniline which was a primary aromaticamine with
New Pd-NHC complexes have been synthesized and employed for palladium-catalyzed directarylation of pyrrolederivatives by using electron-deficient aryl chlorides as coupling partners. The desired coupling products were obtained in moderate to good yields by using 1 mol % of these air-stable palladium complexes. This is an advantage compared to the procedures employing air-sensitive phosphines, which