A cascade synthesis of 2,3-dihydroquinazolin-4(1H)-ones has been developed from 2-aminobenzonitriles and carbonyl analogues using Gemini basic ionic liquid as green catalyst cum solvent at room temperature. Both aldehydes and ketones were condensed with 2-aminobenzonitriles affording good to excellent yields of products. Moreover, the ionic liquids can be reused up to 5^th cycle without significant loss of catalytic activity.

中文翻译：

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Gemini碱性离子液体作为双功能催化剂，可在室温下合成2,3-二氢喹唑啉-4（1 H）-ones

在室温下，使用Gemini碱性离子液体作为绿色催化剂和溶剂，由2-氨基苯甲腈和羰基类似物开发了2,3-二氢喹唑啉-4（1 H）-ones的级联合成。醛和酮都与2-氨基苄腈缩合，从而提供了良好或优异的产物收率。此外，离子液体可重复使用至^第5^个循环，而不会显着降低催化活性。