A simple one‐pot procedure for the preparation of 2,4,5‐triphenyl imidazole derivatives is presented. The procedure involves the lead tetraacetate oxidation of 1,2‐diols to give aldehydes in situ, which then undergo a three‐component reaction with benzil and ammonium acetate to yield the imidazole derivatives.
An efficient and novel one-pot synthesis of 2,4,5-triaryl-1H-imidazoles catalyzed by UO2(NO3)2·6H2O under heterogeneous conditions
作者:Vardhineedi Satyanarayana、Amaravadi Sivakumar
DOI:10.2478/s11696-011-0028-z
日期:2011.1.1
An efficient, convenient, and novel one-pot method of 2,4,5-triaryl-1H-imidazoles synthesis using benzil, arene carbaldehydes, and ammonium acetate, catalyzed by uranylnitratehexahydrate [UO2(NO3)2·6H2O] supported on acidic alumina and resulting in good to excellent yields under heterogeneous conditions, is reported. Formation of a reactants-catalyst complex was confirmed by UV-VIS spectral data