Oxymetallation of khellin. Solvomercuration, osmylation, and palladium-catalyzed oxidation of the furan ring in khellin. The synthesis of highly oxygenated chromones and 2-substituted furochromones
Oxymetallation of khellin. Solvomercuration, osmylation, and palladium-catalyzed oxidation of the furan ring in khellin. The synthesis of highly oxygenated chromones and 2-substituted furochromones