Results 11 to 20 of about 16,360 (266)

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

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

Cholinesterase-like organocatalysis by imidazole and imidazole-bearing molecules [PDF]

Scientific Reports, 2017
AbstractOrganocatalysis, which is mostly explored for its new potential industrial applications, also represents a chemical event involved in endogenous processes. In the present study, we provide the first evidence that imidazole and imidazole derivatives have cholinesterase-like properties since they can accelerate the hydrolysis of acetylthiocholine
NIERI, PAOLA, CARPI, SARA, FOGLI, STEFANO, POLINI, BEATRICE, BRESCHI, MARIA CRISTINA, PODESTA', ADRIANO   +5 more
openaire   +3 more sources

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

1-Propyl-4(5)-Methylimidazole Isomers for Temperature Swing Solvent Extraction

Molecules, 2022
Temperature swing solvent extraction (TSSE) utilizes an amine solvent with temperature-dependent water solubility to dissolve water at a lower temperature to concentrate or crystallize the brine and the phases are separated.
Shuai Qian, Lauren M. Ward, Luke S. Rakers, Steven T. Weinman, Jason E. Bara   +4 more
doaj   +1 more source

Regiodivergent synthesis of functionalized pyrimidines and imidazoles through phenacyl azides in deep eutectic solvents

Beilstein Journal of Organic Chemistry, 2020
We report that phenacyl azides are key compounds for a regiodivergent synthesis of valuable, functionalized imidazole (32–98% yield) and pyrimidine derivatives (45–88% yield), with a broad substrate scope, when using deep eutectic solvents [choline ...
Paola Vitale, Luciana Cicco, Ilaria Cellamare, Filippo M. Perna, Antonio Salomone, Vito Capriati   +5 more
doaj   +1 more source

Fruit juices act as biocatalysts in the efficient synthesis of potentially bioactive imidazoles

Green Chemistry Letters and Reviews, 2022
An efficient and eco-friendly itinerary has been carried out for the synthesis of imidazole derivatives (3a–3h) from the reactions between substituted aldehydes (1a–1h), benzil (2a), and ammonium acetate (2b) in Citrus limon L.
Susheel Gulati, Rajvir Singh, Suman Sangwan   +2 more
doaj   +1 more source

Synthesis, Characterization, and Catalytic Properties of Magnetic Fe3O4@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives

Frontiers in Chemistry, 2020
In this protocol, Fucoidan (FU), a fucose-rich sulfated polysaccharide extracted from brown algae Fucus vesiculosus was used for in situ preparation of magnetic Fe3O4@FU. Nanoco magnetic properties of Fe3O4@FU were investigated by energy dispersive X-ray
Maryam Banazadeh, Sara Amirnejat, Shahrzad Javanshir   +2 more
doaj   +1 more source