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Chiral bifunctional squaramide catalyzed asymmetric tandem Michael-cyclization reaction: efficient synthesis of optically active 2-amino-4H-chromene-3-carbonitrile derivatives

DerivativesChiral Bifunctional SquaramideEngineeringActive 2-Amino-4h-chromene-3-carbonitrile DerivativesOrganic ChemistryCatalysisEfficient SynthesisChemistryStereoselective SynthesisAsymmetric CatalysisEnantioselective SynthesisBiomolecular Engineering