Magnetite (Fe3O4) nanoparticles-supported dodecylbenzenesulfonic acid as a highly efficient and green heterogeneous catalyst for the synthesis of substituted quinolines and 1-amidoalkyl-2-naphthol derivatives

Abstract

Magnetically retrievable, magnetite (Fe3O4) nanoparticles-supported dodecylbenzenesulfonic acid (DDBSA@MNP) was synthesized and characterized through different analytical techniques such as TEM, XRD, FTIR, TGA, SEM, EDX and VSM. The catalytic efficiency of synthesized DDBSA@MNP was evaluated for the synthesis of substituted quinolines and 1-amidoalkyl-2-naphthols through one-pot condensation. The methodology provides a facile approach for the synthesis of targeted compounds with excellent isolated yields. Additionally, the catalyst can be recovered through external magnet and reused up to five reaction cycles with prominent reactivity. The present approach offers many advantages such as green and mild reaction condition, facile catalyst recovery and excellent isolated yield of final products.