Unsymmetrical indazolyl-pyridinyl-triazole ligand-promoted highly active iridium complexes supported on hydrotalcite and its catalytic application in water
作者:Chenyang Ge、Xinxin Sang、Wei Yao、Liang Zhang、Dawei Wang
DOI:10.1039/c7gc02892j
日期:——
indazolyl-pyridinyl-triazole ligand was synthesized and its iridium complex supported on hydrotalcite was characterized via X-ray power diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). This new heterogeneous catalyst bearing the unsymmetrical indazolyl-pyridinyl-triazole ligand exhibits high catalytic activity
Tunable Triazole-Phosphine-Copper Catalysts for the Synthesis of 2-Aryl-1<i>H</i>
-benzo[d]imidazoles from Benzyl Alcohols and Diamines by Acceptorless Dehydrogenation and Borrowing Hydrogen Reactions
作者:Zhaojun Xu、Duo-Sheng Wang、Xiaoli Yu、Yongchun Yang、Dawei Wang
DOI:10.1002/adsc.201700179
日期:2017.10.4
activity. Mechanistic studies and deuterium labeling experiments indicated that the reactions proceeded by an initial and reversible alcohol dehydrogenation resulting in a copper hydride intermediate. This was also supported by the direct observation of a diagnostic copper hydride signal by solid‐state infrared spectroscopy. The TAP−Cu‐H complex showed absorptions at 912 cm−1 that could be assigned
三唑-膦-铜配合物(TAP-Cu)已被合成并用作可调谐和有效的催化剂,用于选择性合成氟代2-芳基-1 H-苯并[d]咪唑和1-苄基-2-芳基1小时一步法制得的简单醇中的苯并[d]咪唑衍生物。TAP-Cu对脱氢和借用氢反应均显示出优异且可调节的催化活性,首次证明了80多个例子。观察到配体在催化剂活性中起关键作用。机理研究和氘标记实验表明,反应是通过初始且可逆的醇脱氢进行的,从而生成氢化铜中间体。固态红外光谱法直接观察氢化铜诊断信号也支持了这一点。TAP-Cu-H络合物在912 cm -1处显示吸收可以分配给氢化铜拉伸。此外,也成功地进行了中间双亚胺的直接捕集。
AMINOMETHYL-4-IMIDAZOLES
申请人:Galley Guido
公开号:US20080119535A1
公开(公告)日:2008-05-22
The present invention relates to amino-4-methyl imidazoles and pharmaceutically-acceptable salts thereof.
The compound may be used for the treatment of depression, anxiety disorders, bipolar disorder, attention deficit hyperactivity disorder (ADHD), stress-related disorders, psychotic disorders such as schizophrenia, neurological diseases such as Parkinson's disease, neurodegenerative disorders such as Alzheimer's disease, epilepsy, migraine, hypertension, substance abuse and metabolic disorders such as eating disorders, diabetes, diabetic complications, obesity, dyslipidemia, disorders of energy consumption and assimilation, disorders and malfunction of body temperature homeostasis, disorders of sleep and circadian rhythm, and cardiovascular disorders.
properties of these derivatives were examined in human AChE and BuChE in vitro and possible interactions were determined by molecular docking studies. All benzamide derivatives were exhibited dual inhibitory character and high BBB permeability. The most effective inhibitor was found as N7 for both AChE and BuChE with IC50 values of 1.57 and 2.85 μM, respectively. Besides the most potent inhibitor was predicted
Ruthenium(II) bis(hydrazone) complexes derived from 1,3,4-oxadiazoles: Synthesis, crystal structure and catalytic application in N-alkylation reactions
1,3,4-Oxadiazoles (A-C) were derived via a series of reactions between isoniazid and salicylaldehydes. While reacting the oxadiazoles with [RuHCl(CO)(PPh3)(3)] in the presence of NaOH, mononuclear ruthenium(II) complexes bearing 'salen' type N,N'-bis(salicylidene) hydrazone ligands (1-3) were obtained. The oxadiazoles and ruthenium(II) complexes were characterized by analytical and spectral methods. The single crystal XRD analyses of complexes 1 and 2 suggested an octahedral geometry around ruthenium(II) ions in which the bis(hydrazone) act as mononegative bidentate ligands. It was also observed that the presence of an intramolecular hydrogen bonding between the hydroxyl proton and one of the azomethine nitrogens in all the complexes. Further, the complexes were proved as versatile catalysts for the N-alkylation of amines with alcohols under optimized reaction conditions. (C) 2015 Elsevier B.V. All rights reserved.