1728-97-8

Upstream product

• 100-10-7 4-dimethylamino-benzaldehyde 
• 134-81-6 benzil 
• 119-53-9 2-hydroxy-2-phenylacetophenone 
• 57-13-6 urea 
• 631-61-8 ammonium acetate 

Downstream Products

• 1728-99-0 4-(4-hydroperoxy-4,5-diphenyl-4H-imidazol-2-yl)-N,N-dimethyl-aniline 
• 6932-18-9 N,N'-Dibenzoyl-(4-dimethylamino)benzamidin 
• 39601-41-7 2-(p-dimethylaminophenyl)-4-hydroxy-4,5-diphenyl-4H-imidazole 
• 255065-88-4 2‐(2‐(4‐(dimethylamino)phenyl)‐4,5‐diphenyl‐1H‐imidazol‐1‐yl)acetohydrazide 

Relevant academic research and scientific papers

A green and simple method for the synthesis of 2,4,5-trisubstituted-1H-imidazole derivatives using acidic ionic liquid as an effective and recyclable catalyst under ultrasound

Abstract: In the current work, an acidic ionic liquid ([{(IMC)-4-OMBH}BIM][HSO4]3) has been utilized as an effective and recyclable catalyst for the synthesis of 2,4,5-trisubstituted-1H-imidazole derivatives with high yields under optimal reaction conditions and ultrasound irradiation. Important features of the new catalyst are facile synthesis, cheap reagents and successful reuse for many times. What makes the present method an effective contribution in the field of synthesis of 2,4,5-trisubstituted-1H-imidazole derivatives is the fact that it can be described as environmentally friendly, economical, short reaction time, possible recover of the catalyst, simple workup, safer and mild reaction conditions. Graphic abstract: [Figure not available: see fulltext.].

4-(4,5-Diphenyl-1H-imidazole-2-yl)-N,N-dimethylaniline-Cu(II) complex, a highly selective probe for glutathione sensing in water-acetonitrile mixtures

The imidazole derivative 4-(4,5-diphenyl-1H-imidazol-2-yl)-N,N-dimethylaniline (probe 1) formed a highly coloured and non-emissive 1:1 stoichiometry complex with Cu(II) in water-acetonitrile 1:1 (v/v) solutions. Among all the amino acids (Lys, Val, Gln, L

Synthesis and characterization of a new polymeric catalyst and used for the synthesis of imidazole derivatives

Cross-linked poly (4-vinylpyridine) supported TiCl4 abbreviated as [P4-VP]-Ti(IV) as a new polymeric catalyst was easily prepared and characterized by using the X-ray spectroscopy, EDS, mapping, TGA/DTG and FTIR techniques. This catalyst was used for synthesis of imidazole derivatives via one-pot three-component condensation reaction of benzil, ammonium acetate and aldehydes. This protocol offers advantages such as short reaction time, simple reaction work-up with reusability of catalyst. Graphic abstract: [Figure not available: see fulltext.].

Homoselective synthesis of 5-substituted 1H-tetrazoles and one-pot synthesis of 2,4,5-trisubstuted imidazole compounds using BNPs@SiO2-TPPTSA as a stable and new reusable nanocatalyst

Considering the importance of tetrazole and imidazole derivatives in pharmacy, industry, and explosives, BNPs@SiO2-TPPTSA was easily prepared and used as an effective, stable, and renewable nanocatalyst for the homoselective synthesis of different 5-substituted 1H-tetrazoles and atom economic synthesis of 2,4,5-trisubstituted-1H-imidazoles in solventless conditions. BNPs@SiO2-TPPTSA was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), thermal gravimetric-differential thermal analysis (TGA-DTA), mapping, pH analysis, and Fourier transform infrared (FT-IR) techniques. Furthermore, the catalyst recycled for at least sequential five loads without a remarkable drop-in catalytic activity.

Magnetic nanoparticle-supported sulfonic acid as a green catalyst for the one-pot synthesis of 2,4,5-trisubstituted imidazoles and 1,2,4,5-tetrasubstituted imidazoles under solvent-free conditions

In this work, magnetic nanoparticle-supported sulfonic acid (γ-Fe2O3-SO3H) is used as an efficient catalyst in the synthesis of 2,4,5-trisubstituted imidazoles and 1,2,4,5-tetrasubstituted imidazoles in a short time (40-70 min for trisubstituted imidazoles and 30-40 min for tetrasubstituted imidazoles) and high-purity products were obtained (92-98% for trisubstituted imidazoles and 94-98% for tetrasubstituted imidazoles) in simple multicomponent reactions. The structure of these products was confirmed via FT-IR and NMR. Green and recyclable catalysts, eco-friendly and solvent-free conditions, high catalytic activity, shorter reaction time, easy recovery by an external magnet, high purity, and excellent yields are some features of these reactions.

Ultrasound-assisted synthesis of NiO nanoparticles and their catalytic application for the synthesis of trisubstituted imidazoles under solvent free conditions

The present protocol reports the ultrasound assisted synthesis of NiO nanoparticles(NPs) using benzylamine as a base and different types of cyclodextrins (CDs) as capping agents. The use of α-CD, β-CD or γ-CD leads to different morphologies of NiO NPs. In particular, NiO nanosheets obtained using β-CD as the capping agent. The synthesized NPs were characterized by FEG-SEM, TEM, XRD and EDS analysis. They showed high catalytic activity towards synthesis of different trisubstituted imidazoles under solvent free conditions. In addition, NiO NPs could be recycled and reused consecutively up to four recycle runs without much loss of their catalytic activity.

Magnetic horsetail plant ash (Fe3O4@HA): a novel, natural and highly efficient heterogeneous nanocatalyst for the green synthesis of 2,4,5-trisubstituted imidazoles

Horsetail plant ash (HA), as a natural source of mesoporous silica, has been prepared from the exposure of horsetail plant (Equisetum Arvense) to high temperature. In the present study, a new magnetically separable and also recoverable Fe3O4 nanoparticles were synthesized in the presence of natural horsetail plant ash (HA) as a support to result in Fe3O4@HA. FT-IR, XRD, TEM, SEM–EDX and VSM analysis were combined to characterize the morphology and structure of this novel synthesized nanocatalyst. This magnetically solid acid nanocatalyst showed an excellent catalytic activity for the synthesis of 2,4,5-trisubstituted imidazoles at room temperature in aqueous media. The procedure led to corresponding products in high to excellent yields and appropriate times. Additionally, this nanocatalyst can be easily recovered by a magnetic field and reused for six other consecutive reaction runs without noticeable loss of its catalytic efficiency. Based on this study, Fe3O4@HA is found to be an efficient, magnetically separable, recyclable, and green catalyst with natural source. Graphic abstract: In this work, horsetail plant ash was used as a natural source of mesoporous silica for the synthesis of Fe3O4@HA as a highly powerful magnetically solid acid nanocatalyst, which was fully characterized using various techniques. The activity of the newly synthesized nanocatalyst was tested for the synthesis of 2,4,5-trisubstituted imidazole derivatives.[Figure not available: see fulltext.]

An eco-friendly, one pot synthesis of tri-substituted imidazoles in aqueous medium catalyzed by RGO supported Au nano-catalyst and computational studies

An eco-compatible, mild and operationally simple aqueous phase protocol for the synthesis of 2,4,5-trisubstituted imidazoles has been achieved with high substrate scope using supported Au nanoparticles. The catalyst can be recovered for the subsequent rea

Bronsted acidic ionic liquid catalyzed an eco-friendly and efficient procedure for synthesis of 2,4,5-trisubstituted imidazole derivatives under ultrasound irradiation and optimal conditions

Abstract: 2-[(1H-imidazol-3-ium-3-yl)methyl]-4-{bis[3-((1H-imidazol-3-ium-3-yl) methyl-(4-hydroxyphenyl]methylene}cyclohexa-2,5-dienone trihydrogen sulfate ([2-(imm)-4-{b(immh)m}c][HSO4]3), as the new Bronsted acidic ionic liquid, is effectively prepared and revealed by using FTIR, 1H NMR, SEM, EDS, XRD and mass data. Afterward, its catalytic activity was investigated for the synthesis of 2,4,5-trisubstituted imidazole derivatives via the simple reaction between different aldehydes, ammonium acetate and benzil/benzoin under ultrasound irradiation at ambient temperature and optimal conditions. The novel procedure has the advantages of high yields, easy handling, short reaction times, and being eco-friendly and economical. Moreover, the catalyst can be easily recovered for several times without any additional treatment. Graphic abstract: [Figure not available: see fulltext.].

A new nanocomposite catalyst based on clay-supported heteropolyacid for the green synthesis of 2,4,5-trisubstituted imidazoles

Intercalation of cetyltrimethylammonium (CTA+) cations within the nanolayers of montmorillonite (MMT) clay followed by reaction with Keggin-type phosphomolybdic acid (PMo) resulted in the synthesis of (CTA)3PMo-MMT nanocomposite catalyst. The prepared nanocomposite catalyst was characterized using different physicochemical methods such as Fourier-transform infrared and inductively coupled plasma–optical emission spectroscopies, X-ray diffraction, and nitrogen adsorption–desorption (Brunauer–Emmett–Teller method) analyses. Characterization techniques demonstrated the intercalation of (CTA)3PMo species into the nanolayers of MMT. The resulting (CTA)3PMo-MMT nanocomposite catalyst efficiently catalyzed the synthesis of 2,4,5-trisubstituted imidazoles under solvent-free conditions. The efficiency is due to the fact that the presence of CTA+ species makes the nanocomposite catalyst hydrophobic and facilitates the accessibility of hydrophobic reactants to active sites in the course of the reaction. High activity and selectivity were achieved in the presence of the prepared nanocomposite catalyst. The nanocomposite catalyst was readily isolated from the reaction mixture using simple filtration, washed with ethanol, and recycled five times without a major loss of activity.