نتایج جستجو برای: 5-Trisubstituted imidazole

تعداد نتایج: 1221473  

Khalil Pourshamsian Naser Montazeri Sadegh Asadyan

Caro’s acid-silicagel was found to be a mild and effective catalyst for the one –pot multicomponent condensation of benzyl, aldehydes and ammonium acetate used for synthesis of 2, 4, 5-trisubstituted imidazole derivatives under solvent–free conditions. This catalyst has several advantages such as simple work-up, low cost and reusability.

Journal: :journal of nanostructures 2012
a. bamoniri s. rohani

a general synthetic route to the synthesis of imidazoles has been developed using nano sbcl5/sio2 under solvent-free conditions. the multi-component reactions of aldehydes, benzil and ammonium acetate were carried out to afford some trisubstituted imidazole derivatives. this method provides several advantages like simple work-up, environmentally benign, and shorter reaction times along with hig...

A. Bamoniri, S. Rohani

A general synthetic route to the synthesis of imidazoles has been developed using nano SbCl5/SiO2 under solvent-free conditions. The multi-component reactions of aldehydes, benzil and ammonium acetate were carried out to afford some trisubstituted imidazole derivatives. This method provides several advantages like simple work-up, environmentally benign, and shorter reaction times along wi...

A convenient synthetic method for the synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetra substituted imidazole derivatives, has been developed via one-pot condensation reaction in solvent-free condition when aldehyde, ammonium acetate/amine, and 1,2-diketone are reacted using 0.8 mol% of NP-LaMnO3 at 80 °C under solvent free conditions. Catalyst could be recovered and reused in five reaction c...

Journal: :Journal of Ultra Chemistry 2021

A series of derivatives (E)-6-chloro-5-fluoro-2-styryl-1H-benzo[d]imidazole, and 5-fluoro-2-methylN-phenyl-1H-benzo[d]imidazol-6-amine was synthesized. Compounds confirmed by melting point, FT-IR, 1HNMR, Mass spectral analytical techniques predicted for their ADME, Pharmacokinetic properties.Synthesized compounds screened better antibacterial antiinflammatory activity. To synthesize a novel tri...

A convenient synthetic method for the synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetra substituted imidazole derivatives, has been developed via one-pot condensation reaction in solvent-free condition when aldehyde, ammonium acetate/amine, and 1,2-diketone are reacted using 0.8 mol% of NP-LaMnO3 at 80 °C under solvent free conditions. Catalyst could be recovered and reused in five reaction c...

Journal: :ACS combinatorial science 2016
Doohyun Lee Seungyeon Lee Kwang-Hyeon Liu Jong-Sup Bae Dong Jae Baek Taeho Lee

Traceless solid-phase synthesis of 1,3,7,8-tetrasubstituted xanthine (1,3,7,8-tetrasubstituted 1H-purine-2,6(3H,7H)-dione) derivatives has been developed. The solid-phase synthetic route began on a solid supported N'-cyano-N-substituted carbamimidothioate, which was prepared from cyanamide, isothiocyanate, and Merrifield resin. After N-alkylation of carbamimidothioate resin with ethyl 2-bromoac...

Journal: :Molecules 2013
Ramon Borges da Silva Vanessa Brandão Loback Kelly Salomão Solange Lisboa de Castro James L Wardell Solange M S V Wardell Thadeu Estevam Moreira Maramaldo Costa Carmen Penido Maria das Graças Muller de Oliveira Henriques Samir Aquino Carvalho Edson Ferreira da Silva Carlos Alberto Manssour Fraga

Herein, we report the design, synthesis and trypanocidal activity of some novel trisubstituted imidazole derivatives. These heterocyclic derivatives were structurally planned by exploring the concept of molecular hybridisation between two arylhydrazones derived from megazol, which has potent trypanocidal activity. The trypanocidal activity of these triarylimidazole derivatives was evaluated aga...

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