Direct synthesis of 2-substituted furotropones from tropolones utilizing alkynyl(phenyl)iodonium salts

Article abstract of DOI:10.1016/0040-4039(96)01150-1

Reaction of alkynyl(phenyl)iodonium tetrafluoroborates with tropolones in the presence of a base undergoes tandem O-Michael-carbene insertions and provides a useful route for the direct synthesis of 2-substituted furotropones from tropolones.