Study on Synthesis of 2,3-dihydroquinazolin-4(1H)-one Catalyzed by Supported Imidazole Ionic Liquid
A type of Al-MCM-41 supported dual imidazolium ionic liquid Al-MCM-41@ILCe Cl4 has been synthesized and efficiently used as an catalyst in the one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one in the condensation of benzaldehyde and anthranilamide.It was shown that the high efficiency with high yield of 94%was achieved under mild conditions.Moreover,the catalyst was stable,very active,robust,and displayed good recyclability without significant loss of catalytic activity after five consecutive cycles during the process.The advantages of Al-MCM-41@ILCe Cl4 are simple preparation method,excellent biocom-patibility and convenient recycling,which meet the development direction of green chemistry and possess good industrial applica-tion prospects.
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