Nanosized MCM-41 supported protic ionic liquid as an efficient novel catalytic system for Friedlander synthesis of quinolines

Nanosized MCM-41 has been synthesized by sol–gel method. n-Butanesulfonic acid pyridinium hydrogensulfate as protic ionic liquid has been dispersed on the MCM-41 nanoparticles. The morphology of the MCM-41 and MCM-41 supported ionic liquid has been studied by SEM, XRD, BET and FT-IR techniques. The catalytic performance of the nanosized MCM-41 supported ionic liquid was investigated in the Friedlander synthesis of quinolines.

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► MCM-41 supported n-butanesulfonic acid pyridinium hydrogensulfate ((BSPY)HSO4/MCM-41).
► (BSPY)HSO4/MCM-41 as heterogeneous catalyst for Friedlander synthesis.
► Characterization of (BSPY)HSO4/MCM-41 using FT-IR, SEM, BET and XRD techniques.