Expeditious One‐Pot and Solvent‐Free Synthesis of Dihydroquinazolin‐4(1H)‐ones in the Presence of Microwaves

Abstract Dihydroquinazolin‐4(1H)‐ones were synthesized for the first time by a novel three‐component condensation of isatoic anhydride, a primary amine, and an aldehyde catalyzed by Amberlyst‐15 in the presence of microwaves under neat conditions. The catalyst is reusable, thus making the process more environmentally friendly.

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