Ultrasound assisted synthesis of enaminones using Nickel oxide

Abstract

An efficient and simple protocol of β-enaminones and β-enamino esters synthesis using nickel oxide under ultrasound sonication has been developed. Ultrasound sonication triggers the formation of enaminones under the mild reaction conditions. Nickel oxide was found to be efficient, heterogeneous, moisture stable, robust and recyclable catalyst.

Keywords

• Ultrasound
• β-enaminones
• β-enamino esters
• Heterogeneous catalysis
• NiO