Multicomponent Reactions Synthesis of Triaryl-1H Imidazoles Using Reductive-oxidative Reactions by MnO2-FeSO4 as a Catalyst

• Main Authors: Ali A.Raheem, Ali T.Saleh
• Format: Article
• Language: English
• Published: Islamic Azad University 2021-05-01
• Series: Journal of Chemical Health Risks
• Subjects: multicomponent reactions; triaryl-1h imidazoles; reductive-oxidative; catalyst; mno2-feso4
• Online Access: http://www.jchr.org/article_682034_4d4356bc19e0bee2bb7a5b9a33964cad.pdf

The study's chief purpose is to investigate multicomponent reactions synthesis of triaryl-1h imidazoles using reductive-oxidative reactions by MnO2 - FeSO4 as a catalyst.Some novel substituted imidazoles have been synthesized using MCRs, one-pot synthesis, and MnO2/FeSO4 as a catalyst; the method involves the reaction of benzil, aromatic aldehyde, and ammonium acetate in the presence of MnO2/FeSO4 as a reductive-oxidative catalyst under mild conditions. the obtained compounds were nontoxic, excellent yields, and environmentally friendly. The compounds were elucidated  using IR and 1H-NMR spectra. To satisfy the aim of the study, Reactions have been performed simply by mixing 1,2-diketone with an aldehyde and ammonium acetate in the presence of the catalytic reagent of MnO2/FeSO4. The mixture was prepared by ground them together in a mortar with a pestle at room temperature for several minutes; after that, they purified by column chromatography, 2,4,5-triaryl substituted imidazole derivatives were obtained in excellent yields.