One-Pot Synthesis of 1,4-Dihydropyridine and Polyhydroquinoline Derivatives via L-Proline Catalyzed Hantzsch Multicomponent Reaction under Ultrasound Irradiation
One-Pot Synthesis of 1,4-Dihydropyridine and Polyhydroquinoline Derivatives via L-Proline Catalyzed Hantzsch Multicomponent Reaction under Ultrasound Irradiation