New class of imidazoles incorporated with thiophenevinyl conjugation pathway for robust nonlinear optical chromophores
摘要:
A new series of thermally stable heterocyclic imidazole-based nonlinear optical chromophores has been developed. These chromophores possess a thiophene based stilbene conjugation pathway with a nitro acceptor group attached to the phenyl end. This feature leads to robust chromophores with high thermal stability and enhanced molecular nonlinearity. (C) 2001 Elsevier Science Ltd. All rights reserved.
Silica coated magnetic NiFe2O4 nanoparticle supported phosphomolybdic acid; synthesis, preparation and its application as a heterogeneous and recyclable catalyst for the one-pot synthesis of tri- and tetra-substituted imidazoles under solvent free conditions
Trisubstituted-Imidazoles Induce Apoptosis in Human Breast Cancer Cells by Targeting the Oncogenic PI3K/Akt/mTOR Signaling Pathway
作者:Chakrabhavi Dhananjaya Mohan、V. Srinivasa、Shobith Rangappa、Lewis Mervin、Surender Mohan、Shardul Paricharak、Sefer Baday、Feng Li、Muthu K. Shanmugam、Arunachalam Chinnathambi、M. E. Zayed、Sulaiman Ali Alharbi、Andreas Bender、Gautam Sethi、Basappa、Kanchugarakoppal S. Rangappa
DOI:10.1371/journal.pone.0153155
日期:——
induced motility of breastcancercells and molecular docking calculations revealed that all compounds bind to Akt2 kinase with high docking scores compared to the library of previously reported Akt2 inhibitors. In summary, we report the synthesis and biological evaluation of imidazoles that induce apoptosis in breastcancercells by negatively regulating PI3K/Akt/mTOR signalingpathway.
Catalytic conversion of 2,4,5-trisubstituted imidazole and 5-substituted 1H-tetrazole derivatives using a new series of half-sandwich (η6-p-cymene)Ruthenium(II) complexes with thiophene-2-carboxylic acid hydrazone ligands
作者:Govindasamy Vinoth、Sekar Indira、Madheswaran Bharathi、Govindhasamy Archana、Luis G. Alves、Ana M. Martins、Kuppannan Shanmuga Bharathi
DOI:10.1016/j.ica.2020.120089
日期:2021.2
The molecular structures of the ruthenium(II) complexes 1-3 were determined by single-crystal X-ray diffraction. All complexes were used as catalysts for the one-pot three-component syntheses of 2,4,5-trisubstitued imidazole and 5-substituted 1H-tetrazole derivatives. The catalytic studies optimized parameters as solvent, temperature and catalyst. The catalysts revealed very active for a broad range
摘要一系列新的半三明治(η6-对-cymene)钌(II)与噻吩-2-羧酸酰肼衍生物[Ru(η6-对-cymene)(Cl)(L)] [L = N' -(萘-1-基亚甲基)噻吩-2-碳酰肼(L1),N'-(蒽-9-基亚甲基)噻吩-2-碳酰肼(L2)和N'-(吡喃-1-基亚甲基)噻吩-2-合成了碳酰肼(L3)]。通过光谱(IR,UV-Vis,NMR和质谱)和元素分析对配体前体及其Ru(II)配合物(1-3)进行结构表征。钌(II)配合物1-3的分子结构通过单晶X射线衍射测定。所有配合物均用作催化剂,用于一锅三组分合成2,4,5-三取代的咪唑和5-取代的1H-四唑衍生物。催化研究优化了溶剂,温度和催化剂等参数。所述催化剂显示出对具有电子吸引子或电子给体取代基的广泛范围的芳族醛非常有效,并且尽管活性较低,但对于烷基醛观察到中等至高的活性。
Cu(II) immobilized on guanidinated epibromohydrin‐functionalized γ‐Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub>(γ‐Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub>‐EG‐Cu(II)): A highly efficient magnetically separable heterogeneous nanocatalyst for one‐pot synthesis of highly substituted imidazoles
A simple, efficient and eco‐friendly procedure has been developed using Cu(II) immobilized on guanidinated epibromohydrin‐functionalized γ‐Fe2O3@TiO2 (γ‐Fe2O3@TiO2‐EG‐Cu(II)) for the synthesis of 2,4,5‐trisubstituted and 1,2,4,5‐tetrasubstituted imidazoles, via the condensation reactions of various aldehydes with benzil and ammonium acetate or ammonium acetate and amines, under solvent‐free conditions
Synthesis and characterization of nano-copper ferrite as a magnetically separable catalyst for the one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles under solvent-free condition
The authors report herein, synthesis and characterization of nano-copper ferrite as a recoverable, eco-friendly, inexpensive, and readily available catalyst for efficient, simple, and green synthesis of multi-substituted imidazoles. Short reaction times, high yields, easy workup, and mild condition are the advantages of this protocol. The catalyst can be reused without evident loss of the catalytic
One-Pot Three-Component Synthesis of 2,4,5-Triaryl-1H-imidazoles Using Mn2+ Complex of [7-Hydroxy-4-methyl-8-coumarinyl] Glycine as a Heterogeneous Catalyst
A highly efficient and simple synthesis of 2,4,5-trisubstituted imidazoles has been developed using highly reusable support‐free Mn2+complex of [7-hydroxy-4-methyl-8-coumarinyl] glycine as a heterogeneous catalyst via a one-potthree-component reaction of benzil, aldehydes and ammonium acetate as a nitrogen source. Moreover, this catalyst was characterized by various techniques such as field emission