Nano Silica Sulfuric Acid an Efficient and Recoverable Heterogeneous Catalyst for the Preparation of Amidoalkyl Naphthols Under Solvent-Free Conditions

An efficient and green method has been developed for the synthesis of amidoalkyl naphthol derivatives through a one-pot three-component condensation of 2-naphthol, aldehydes, and amide in the presence of nano silica sulfuric acid as heterogeneous catalyst under solvent-free conditions.