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Amide-stabilized enols in the enol-Ugi reaction: a five-component synthesis of triamides
Published:
13 November 2021
by MDPI
in The 25th International Electronic Conference on Synthetic Organic Chemistry
session General Organic Synthesis
Abstract:
In continuation with our research in the use of enols in multicomponent reactions with isocyanides (IMCR), we have used for the first time amide-stabilized enols as the acid component in enol-Ugi reactions. Thus, the reaction of 2-(hydroxy(phenylamino)methylene)-5,5-dimethylcyclohexane-1,3-dione with aldehydes, amines and isocyanides provides the expected enamine adducts. On the other hand, the use of analogous Meldrum’s acid-derived enols permits the synthesis of triamides by a five-component process with the participation of a molecule of solvent. These results confirm the great potential of the enol-Ugi reaction for the preparation of a wide variety of structures containing a peptidomimetic scaffolds.
Keywords: isocyanides; triamides; enamines, enol-Ugi; enol; multicomponent reaction; peptidomimetics, dimedone, Meldrum acid