Studies on the Chemical Transformations of Simple Condensates Derived from 3-Formylchromone under Nucleophilic Conditions

The chemical reactivity of the simple condensates 1 and 2, derived from 3-formylchromone, was studied towards some nucleophilic reactions.Reactions of compounds 1 and 2 with some nucleophilic reagents mainly proceed via nucleophilic addition at the exocyclic vinyl bond followed by either elimination or cyclization during the course of reactions.A variety of products were obtained depending on the substrate and the nucleophile used.O O CN CO 2 Et 1 O O CN CN 2 Figure 1