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Organocatalytic Domino Michael Heterocyclization Reaction of Unsaturated Aldehydes and Cyano Ketones Synthesis of Enantioenriched 4,5,6 Trisubstituted 3,4 Dihydropyranones

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Table 1. Reaction of cyanoketone 1a and cinnamaldehyde 2a catalyzed by B in  different conditions, and subsequent oxidation

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