Brønsted Acidic Ionic Liquids as Efficient Catalysts for the Synthesis of Amidoalkyl Naphthols

Abstract

A simple, clean, and environmentally benign three-component process for the synthesis of amidoalkyl naphthols using Brønsted acidic ionic liquids as efficient catalysts in solution and under solvent-free conditions is described.

Keywords:

• Amidoalkyl naphthols
• Brønsted acidic ionic liquids
• multicomponent reactions

Notes

^a β-Naphthol/benzaldehyde/acetamide/IL₁ or IL₂ 1:1:1.3:0.05 or 0.10.

^b Isolated yields.

^a All the products were characterized by ¹H NMR and IR spectral data and comparison of their melting points with those of authentic samples.^{[ 6 , 8 , 10 ]}

^b Isolated yields.