Ultrasound-assisted one-pot synthesis of 2,4,5-triarylimidazole derivatives catalyzed by ceric (IV) ammonium nitrate in aqueous media

Ultrasonic Promoted Synthesis and Antibacterial Screening of Some Novel Piperidine Incorporated α-Aminophosphonates

“…Ultrasound irradiation has been demonstrated as an alternative energy source for organic reactions ordinarily accomplished by heating. 15 Many homogeneous and heterogeneous reactions can be conducted smoothly by sonication to provide improved yields and increased selectivities. 16 Therefore ultrasound irradiation has been established as an important technique in organic synthesis.…”

Nano Copper Ferrite Catalyzed Sonochemical, One-Pot Three and Four Component Synthesis of Poly Substituted Imidazoles

“…Later on a first, simple and convenient synthetic methodology has been reported by Radziszewski and japp for the synthesis of 2,4,5-tri phenyl imidazoles by using 1,2 dicarbonyl compounds, ammonia, various aldehydes [14]. Afterward several methods have been reported for the synthesis of tri-substituted imidazoles by cyclo condensation of 1,2 dicarbonyl compounds, various aromatic aldehydes and ammonium acetate using various catalysts such as NiCl 2 •6H 2 O/Al 2 O 3 [15], MoO 3 /SiO 2 [16], Polymer supported zinc chloride [17], trichloro isocyanuric acid (TCCA) [18] under reflux conditions and glyoxalic acid as catalyst under microwave conditions [19] and Zinc (II) (tetra (4-methylphenyl)) porphyrin [20], Magnetic Fe 3 O 4 nano particles [21], Sulfamic acid functionalized magnetic nano particles SA-MNP [22], Ionic liquid (EMIM)OAc [23], Zr(acac) 4 [24], ceric ammonium nitrate [25] as catalysts under ultra sound assisted conditions. In the same way several methods have been reported for the synthesis of tetra substituted imidazoles by cyclo condensation of 1,2 dicarbonyl compounds, various aromatic aldehydes, ammonium acetate and aromatic/aliphatic amines using various catalysts such as nano TiCl 4 •SiO 2 [26] [33] as catalyst under Ultra sound irradiation.…”

1-Butyl-3-Methyl Imidazolium Hydrogen Sulphate Promoted One-Pot Three-Component Synthesis of Amidoalkyl Naphthols

“…15 Very recently, we have reported the convenient synthesis of polyhydroquinolines and 2,4,5-triarylimidazole derivatives via multicomponent condensation reaction. 16,17 Due to the environmental concerns, the use of benign solvents as an alternative to volatile organic solvents and are of much interest to organic chemist. The use of ionic liquid as a reaction media and catalyst can offer a solution to solvent emission and catalyst recycle problems.…”