Assembly of isoxazol-5-one with 2-unsubstituted imidazole N-oxides and aldehydes?

Organic & Biomolecular Chemistry Pub Date: 2022-12-19 DOI: 10.1039/D2OB02157A

Abstract

A new synthetic protocol has been developed to construct polyfunctional isoxazol-5-one derivatives with imidazole moiety. It is based on the Knoevenagel condensation of isoxazol-5-one with aldehydes and subsequent Michael addition of imidazole N-oxides as part of a tandem three-component process. This reaction proceeds smoothly in moderate-to-good yield under catalyst-free conditions.

Graphical abstract: Assembly of isoxazol-5-one with 2-unsubstituted imidazole N-oxides and aldehydes
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