One-pot Multi-component Synthesis of Amidoalkyl Naphthols with Potassium Hydrogen Sulfate as Catalyst under Solvent-free Condition

One-pot multicomponent condensation of β-naphthol, aromatic aldehydes, acetamide or urea was carried out in the presence of potassium hydrogen sulfate under solvent-free condition to afford the corresponding amidoalkyl naphthols in 83%~96% yields