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β-Cyclodextrin catalyzed access to fused 1,8-dihydroimidazo[2,3-b]indoles via one-pot multicomponent cascade in aqueous ethanol: Supramolecular approach toward sustainability

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JOURNAL OF HETEROCYCLIC CHEMISTRY
卷 57, 期 2, 页码 820-829

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WILEY
DOI: 10.1002/jhet.3828

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  1. UGC, New Delhi, India

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An eco-friendly multicomponent synthesis of substituted imidazole derivatives catalyzed by beta-cyclodextrin (beta-CD) was scrutinized for the first time via a one-pot three-compound reaction of aldehyde, isatin, and ammonium acetate in H2O-EtOH at 80 degrees C. beta-CD is a supramolecule, highly efficient, biodegradable, and recyclable catalyst used to produce high yields of desired 1,8-dihydroimidazo[2,3-b]indoles. The developed protocol contains number of advantages like nontoxic, inexpensive catalyst; green reaction condition; easily available starting material; shorter reaction time; and good yields.

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