Ultrasound mediation for one-pot multi-component synthesis of amidoalkyl naphthols using new magnetic nanoparticles modified by ionic liquids

• MNPs-IL-OAc was synthesized as novel magnetically catalyst.
• We reported a heterogeneous catalytic system for the synthesis of amidoalkyl naphthols.
• The reaction carried out by sonication with better reaction times and yields than conventional methods.
• The magnetite nanocatalyst is stable under ultrasound irradiation.

The ionic liquid 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium acetate was immobilized on the Fe3O4 nanoparticles (MNPs-IL-OAc) and used as an efficient new heterogeneous nanocatalyst for the one-pot multi-component synthesis of 1-amidoalkyl-2-naphthols under ultrasound irradiation. The advantages of present combined method are the use of a low scale catalyst, easier work-up procedure, waste-free, green and efficient synthetic entry to excellent yield of products in a high reusability and a short reaction time.