B(HSO4)3: An efficient and recyclable catalyst for the preparation of substituted Friedländer quinoline synthesis

Abstract

Substituted quinolines have been synthesized in the presence of catalytic amounts of boron sulfonic acid (BSA) in solvent-free conditions. This methodology offers some advantages including high yield, short reaction time, low cost of the catalyst, green conditions by avoiding toxic solvents and recoverable catalyst.

Keywords

• boron sulfonic acid
• substituted quinolines
• solvent-free conditions
• Friedländer reaction