Introduction of a novel nanosized N-sulfonated Brönsted acidic catalyst for the promotion of the synthesis of polyhydroquinoline derivatives via Hantzsch condensation under solvent-free conditions

Abstract

In this research NS-C4(DABCO-SO3H)2)·4Cl as a new nano sizedN-sulfonic acid was prepared and characterized using different types of methods including FT-IR,1H NMR,13C NMR, mass, XRD, TGA, SEM and AFM analysis.