An Effective One-Pot Access to 2-Amino-4H-benzo[b]pyrans and 1,4-Dihydropyridines via γ-Cyclodextrin-Catalyzed Multi-Component Tandem Reactions in Deep Eutectic Solvent

A simple, highly efficient and green route for the synthesis of 2-amino-4 H -benzo[ b ]pyrans and 1,4-dihydropyridines has been developed by using γ-cyclodextrin (γ-CD) as catalyst in deep eutectic solvent (DES) of urea-choline chloride (urea-ChCl), for the first time, accomplished via a one-pot, th...

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