a Parc Cient?́fic de Barcelona, University of Barcelona, Josep Samitier 1-5, 08028-Barcelona, Spain b Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Avda Joan XXIII sn, 08028 Barcelona, Spain
Abstract:
The Lewis acid-catalyzed interaction of dihydropyridines with ethyl glyoxalate and primary aliphatic amines yields, depending on the reaction conditions, bicyclic aminals or rearranged tetrahydropyridines in one-pot multicomponent reactions.