An efficient, practical and atom-efficient method has been developed for the preparation of β-aminoketones and 2,3-dihydroquinazoline-4(1H)-ones via multicomponent one-pot reaction in starch solution as an entirely green catalyst. The advantages of this novel protocol are high yields, short reaction time, simple methodology, easy work-up and purification, lack of toxicity and eco-friendly catalyst. .
Bio-compatible eutectic mixture for multi-component synthesis: A valuable acidic catalyst for synthesis of novel 2,3-dihydroquinazolin-4(1H)-one derivatives
Novel derivatives of quinazolin-4(1H)-one derivatives were effectively synthesized via one-pot multi-component reaction of isatoic anhydride, aldehyde and aromatic amines using acidic catalyst in methanol. The catalyst, being a deepeutectic mixture of choline chloride and malonic acid, gave better results than several reported catalysts. Moreover, such eutectic mixtures are cost-effective, recyclable