羰基钌 (II) 与色酮席夫碱配体形成 [RuCl(CO)(EPh 3 )(L)] ( 1 – 4 ) (E = P or As, L = 3-(benzothiazol-2-yl-) hydrazonomethyl-chromen)-4-one (BTHC) 或 3-(quinolin-2-yl-hydrazonomethyl)-chromen-4-one (QHC) 被配制并进行微观分析以及光谱分析(IR、UV-Vis、1 H & 13 C NMR and ESI mass).通过单晶X射线衍射分析研究了配合物3的分子结构.结果表明配合物具有扭曲的八面体几何结构,配体配位为单负三齿 NSO/NNO 时尚。钌配合物 ( 1 – 4) 被筛选为 N-烷基化和 β-烷基化反应的催化剂。值得注意的是,络合物1被发现是一种非常有效且灵活的催化剂,可用于多种伯胺与醇的 N-烷基化。此外,络合物1作为
Iron-Catalyzed Oxidative Amination of Benzylic C(sp<sup>3</sup>)–H Bonds with Anilines
作者:Yan-Ling Song、Bei Li、Zhen-Biao Xie、Dan Wang、Hong-Mei Sun
DOI:10.1021/acs.joc.1c02311
日期:2021.12.17
Iron-catalyzed oxidative amination of benzylic C(sp3)–H bonds with anilines bearing electron-withdrawing groups (EWGs) or electron-donating groups (EDGs) is realized based on simple variations of N-substituents on imidazolium cations in novel ionic Fe(III) complexes. The structural modification of the imidazolium cation resulted in regulation of the redox potential and the catalytic performance of
基于新型离子 Fe 中咪唑鎓阳离子上 N 取代基的简单变化,实现了苄基 C(sp 3 )-H 键与带有吸电子基团 (EWG) 或供电子基团 (EDG) 的苯胺的铁催化氧化胺化(三)配合物。咪唑鎓阳离子的结构改性导致氧化还原电位和铁金属中心催化性能的调节。使用DTBP作为氧化剂,[HI t Bu][FeBr 4 ]对带有EWG的苯胺表现出最高的催化活性,而[HIPym][FeBr 4 ]对EDG取代的苯胺更有效。这项工作为苄胺提供了替代途径,同时具有广泛的底物范围和铁催化的优点。
(IPr)Pd(pydc) (pydc = pyridine-2,6-dicarboxylate) – A highly active precatalyst for the sterically hindered C–N coupling reactions
作者:Yan-Jing Li、Jin-Ling Zhang、Xiao-Jian Li、Yu Geng、Xiao-Hua Xu、Zhong Jin
DOI:10.1016/j.jorganchem.2013.03.021
日期:2013.8
A new class of well-defined NHC-Pd complexes incorporating a pyridine-2-carboxylate or pyridine-2,6-dicarboxylate ligand has been synthesized. These novel complexes exhibited prominent catalytic activity in the sterically hindered C-N coupling reactions at elevated temperature, but relatively inferior reactivity at low temperature. The distinctly different reactivity of these NHC-Pd complexes was presumed to be associated with their unique structures of ancillary ligands. (C) 2013 Elsevier B.V. All rights reserved.
Ru(II) complexes containing (2-(pyren-1-ylmethylene)hydrazinyl)benzothiazole: Synthesis, solid-state structure, computational study and catalysis in N-alkylation reactions
作者:Kaliyappan Murugan、Subbarayan Vijayapritha、Periasamy Viswanathamurthi、Kandasamy Saravanan、Paranthaman Vijayan、Stephen O. Ojwach
DOI:10.1016/j.ica.2020.119864
日期:2020.11
Reactions of (2-(pyren-1-ylmethylene)hydrazinyl)benzothiazole (L) with ruthenium(II) prefabricated precursors [RuHCl(CO)(EPh3)(3)] and [RuH2(CO)(EPh3)(3)] (E = P or As) afforded new Ru(II) complexes [RuCl(CO) (EPh3)(2)(L)] and [RuH(CO)(EPh3)(2)(L)] (E = P or As) (1-4). All the Ru(II) complexes (1-4) were characterized by IR, NMR spectroscopies, ESI-mass spectrometry and elemental analyses. The solid-state structures of Ru(II) complexes (2 and 3) were established by single crystal X-ray analyses and revealed distorted octahedral geometries around the ruthenium(II) ion and mono anionic bidentate N<^>N coordination mode for hydrazine ligand. The Ru(II) complexes 2 and 3 were also analyzed using Hirshfeld surface analysis and DFT calculations. Moreover, all the complexes (1-4) were utilized in the N-alkylation reactions of amines using alcohol. Complex 3 was found to be highly active towards N-alkylation of different aromatic amines with alcohol.
Terent'ev, A. B.; Yashkina, L. V.; Pastushenko, E. V., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 5.2, p. 807 - 809
作者:Terent'ev, A. B.、Yashkina, L. V.、Pastushenko, E. V.、Kruglov, D. E.、Safiulova, G. I.