Dedicated to Prof. C. A. Tsoleridis on the occasion of his 67th birthday
Abstract
An easy access to hybrid bioactive molecules, such as the chromenopyrazoles, is described
based on the three-component reactions of 3-formylchromones, arylhydrazines, and acetylenedicarboxylates.
By manipulating the reaction, four different scaffolds can be derived in an easy,
versatile, and robust fashion. To underscore the potential, generality, and diversity
that can be generated, representative libraries of each scaffold were synthesized.
Moreover, a comprehensive NMR analysis with full assignment of all 1H and 13C NMR chemical shifts has been performed.
Key words
3-formylchromones - multicomponent reactions - chromenopyrazoles - microwave irradiation
- hybrid molecules - zwitterions