Organocatalyzed reactions involving 3-formylchromones and acetylenedicarboxylates: Efficient synthesis of functionalized benzophenones and polysubstituted xanthones

Article abstract of DOI:10.1055/s-0030-1258969

Organocatalyzed reactions between chromones and acetylenedicarboxylates leading either to xanthone derivatives or to functionalized benzophenones are described. The outcome of the reactions was found to depend both on the nature of the chromone substituen