A new application of nickel nanoparticles as a heterogeneous catalyst for synthesis of 1-amidoalkyl-2-naphthols according to green chemistry principles

1-amidoalkyl-2-naphthols were prepared via one-pot multi-component reaction of 2-naphthol, aldehydes, and amides in the presence of nickel nanoparticles as a solid phase acidic catalyst, under solvent-free condition at 100 °C. The recent literature survey reveals that the nano nickel was used as heterogeneous catalyst and received noteworthy attention because of its inexpensive, non-toxic, low corrosion, waste minimization, easy transport and disposal of the catalyst. Short reaction times, high yields, and easy work-up are the advantages of this protocol.