p-TSA catalysed efficient synthesis of 1,2,4,5-tetraaryl-imidazoles

p-TSA catalysed simple and efficient synthesis of 1,2,4,5-tetraaryl-imidazoles via a four component condensation of benzoin, aniline, ammonium acetate and araldehydes in ethanol under reflux condition is reported. The yields are high, procedure is mild and less time consuming.