The Synthesis of Substituted Imidazoles and Benzimidazoles withPeriodic Mesoporous Organosilicas (PMOs)catalyst

A simple, high-yielding synthesis of imidazoles derivatives from benzoin, aldehydes, Ammonium acetate under mild reaction conditions at 85°C in good yield is described. Periodic mesoporous organosilicas (PMOs), one of most advanced organic–inorganic hybrid materials,have attracted much research attention because of their combined advantages of ordered mesoporous structure and fusion of organic and inorganic fragments within the pore wall. Periodic mesoporous organosilicas (PMOs) is employed as a renewable and a highly efficient catalyst for the rapid and convenient synthesis of imidazoles derivatives.