Useful Application of Acidic Ionic Liquids as Solvents in Baeyer–Villiger Oxidation with Hydrogen Peroxide for the Synthesis of Lactones

Abstract

Cyclic ketones have been efficiently oxidized with hydrogen peroxide using acidic ionic liquids (ILs) as solvents. This is a new method for the synthesis of lactones with high yields that does not utilize any additional catalysts and enables ILs to be recycled.

Keywords:

• Baeyer–Villiger oxidation
• Hydrogen peroxide
• Ionic liquids
• Lactones
• Urea–hydrogen peroxide

Notes

^a Yields determined by gas chromatography; in parentheses are yields after chromagraphic purification of the reaction mixture.

^a Determined by gas chromatography.

^a Determined by gas chromatography.