L-Proline as an Efficient Organo-Catalyst for the Synthesis of Polyhydroquinoline Via Multicomponent Hantzsch Reaction

L-Proline has been found as an effective catalyst for the one pot synthesis of polyhydroquinoline derivatives via four component Hantzsch reaction. This method provides several advantages such as being environmentally benign, possessing high yields with increased variations of the substituents in the product and preparative simplicity.