One-pot synthesis of 1-amidoalkyl-2-naphthols over novel N-sulfamic acid Modified poly(styrene-maleic anhydride) as a solid acid catalyst

Novel sulfonic acid Modified poly(styrene-maleic anhydride) including 4-amino pyridine-sulfonic acid chloride {NSSMI} was synthesized successfully and efficiently catalyze one-pot multi-component condensation of β-naphthol with urea and aromatic aldehydes under solvent-free conditions to afford 1-amidoalkyl-2-naphthols in excellent yields (80–96%) and in very short reaction times (1–45 min).

کلیدواژه ها:

Poly(styrene-maleic anhydride) ، Sulfonic acid catalysis ، β-Naphthol ، 1-Amidoalkyl-2-naphthol ، Solvent-free