Efficient epoxidation of chalcones with urea-hydrogen peroxide under ultrasound irradiation.

Abstract

An efficient epoxidation of chalcones with urea-hydrogen peroxide (UHP) under ultrasound irradiation was carried out in 78-93% yields. Compared with the classical method, the advantages of protocol are to use a safer oxidant, mild conditions, no toxic solvent and shorter reaction time. 
DOI: 10.1016/j.ultsonch.2008.10.013

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