Results 21 to 30 of about 21,817 (300)

Degradative behavior and toxicity of alkylated imidazoles [PDF]

, 2020
The thermal and oxidative degradation behavior and the corrosiveness of imidazole (Im), 2-methylimidazole (2MIm), 2-ethyl-4-methylimidazole (2E4MIm), 2,4,5-trimethylimidazole (2,4,5MIm), and 1,2,4,5-tetramethylimidazole (1,2,4,5MIm) were investigated in ...
Knuutila, Hanna K, Åstrand, Ove Alexander Høgmoen, Fiksdahl, Anne, Paulsen, Ragnhild Elisabeth, Gaarder, Mona, Evjen, Sigvart   +5 more
core   +1 more source

An Updated Review on the Synthesis and Antibacterial Activity of Molecular Hybrids and Conjugates Bearing Imidazole Moiety

Molecules, 2020
The rapid growth of serious infections caused by antibiotic resistant bacteria, especially the nosocomial ESKAPE pathogens, has been acknowledged by Governments and scientists and is one of the world’s major health problems.
Renzo Rossi, Maurizio Ciofalo
doaj   +1 more source

Synthesis and properties of novel reusable nano-ordered KIT-5-N-sulfamic acid as a heterogeneous catalyst for solvent-free synthesis of 2,4,5-triaryl-1H-imidazoles

, 2022
A novel silica-bonded propyl-N-sulfamic acid nanocatalyst (NHSO3H-KIT-5) supported on modified silica mesopore KIT-5 as an organic-inorganic hybrid with high specific surface area was successfully prepared. The 3-aminopropyltriethoxysilane (APTES) on KIT-
Shervin Ahmadi (9507739), Majid Mommahed Heravi (9225485), Tayebeh Hosseinnejad (3939746), Razieh Mirsafaei (11996704)   +3 more
core   +1 more source

The Structure of Biologically Active Functionalized Azoles: NMR Spectroscopy and Quantum Chemistry

Magnetochemistry, 2022
This review summarizes the data on the stereochemical structure of functionalized azoles (pyrazoles, imidazoles, triazoles, thiazoles, and benzazoles) and related compounds obtained by multipulse and multinuclear 1H, 13C, 15N NMR spectroscopy and quantum
Lyudmila I. Larina
doaj   +1 more source

One-pot synthesis of 2,4,5-trisubstituted imidazole derivatives catalyzed by btppc under solvent-free conditions

Bulletin of the Chemical Society of Ethiopia, 2017
A simple and efficient method for one-pot synthesis of lophine derivatives (2,4,5-trisubstituted imidazoles) by using the benzyltriphenylphosphonium chloride (BTPPC), as a catalyst, under solvent-free conditions is described.
M. Alikarami, M. Amozad
doaj   +1 more source

Copper-Catalyzed Direct Cycloaddition of Imidazoles and Alkenes to Trifluoromethylated Tricyclic Imidazoles

, 2021
We reported herein a copper-catalyzed trifluoromethylarylated cycloaddition of imidazoles and olefins using CF3SO2Cl as the radical source to synthesize highly functionalized tricyclic imidazoles.
Yu Chen (29959), Jianchao Cui, Yu Chen, Jianchao Cui (11546450), Yi Li (1144), Yi Li, Shengnan Lin (10760525), Shengnan Lin   +7 more
core   +1 more source

Cyclization of Activated Methylene Isocyanides with Methyl N(N),N′-Di(tri)substituted Carbamimidothioate: A Novel Entry for the Synthesis of N,1-Aryl-4-tosyl/ethoxycarbonyl-1H-imidazol-5-amines

SynOpen, 2019
Base-induced cyclization of active methylene isocyanides with carbamimidothioates for the synthesis of N,1-aryl-4-tosyl/ethylcarboxy-1H-imidazol-5-amines is reported.
Dukanya Dukanya, Toreshettahally R. Swaroop, Shobith Rangappa, Kanchugarakoppal S. Rangappa, Basappa Basappa   +4 more
doaj   +1 more source

β–Cyclodextrin–Propyl Sulfonic Acid Catalysed One-Pot Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles as Local Anesthetic Agents

Molecules, 2015
Some functionalized 1,2,4,5-tetrasubstituted imidazole derivatives were synthesized using a one-pot, four component reaction involving 1,2-diketones, aryl aldehydes, ammonium acetate and substituted aromatic amines.
Yan Ran, Ming Li, Zong-Ze Zhang
doaj   +1 more source

Visible-light-driven Photocatalytic N-arylation of Imidazole Derivatives and Arylboronic Acids on Cu/graphene catalyst

Scientific Reports, 2015
N-aryl imidazoles play an important role as structural and functional units in many natural products and biologically active compounds. Herein, we report a photocatalytic route for the C-N cross-coupling reactions over a Cu/graphene catalyst, which can ...
Yan-Li Cui, Xiao-Ning Guo, Ying-Yong Wang, Xiang-Yun Guo   +3 more
doaj   +1 more source

Versatile Microwave-Assisted and Lanthanum Chloride Catalysed Synthesis of Polysubstituted Imidazoles Using Urea/Thiourea as Benign Source of Ammonia

E-Journal of Chemistry, 2012
Lanthanum chloride was found to be an effective catalyst for the facile and one-pot synthesis of polysubstituted imidazoles under solvent free condition in excellent yields.
Mohammad Reza Manafi, Pedram Manafi, Mohammad Reza Kalaee   +2 more
doaj   +1 more source