Friedlنnder synthesis of poly-substituted quinolines in the presence of dodecylphosphonic acid (DPA) as a highly efficient, recyclable and novel catalyst in aqueous media and solvent-free conditions

Poly-substituted quinolines were synthesized in the presence of a catalytic amount of dodecylphosphonic acid (DPA) in aqueous media and solvent- free conditions. The reactions proceed very well under relatively mild conditions, and DPA can be recycled.