No abstract

A simple, green, and efficient method is introduced for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones under mild reaction conditions with improved yields by intramolecular cyclization of o-aminochalcones with zirconyl nitrate [Zn(O)(NO3)2·nH2O] as a water-tolerant Lewis-acid catalyst.

A facile, greener and direct synthetic method has been introduced for synthesis of 2-aryl-2,3-dihydroquinoli-4(1H)-ones from 2-aminoacetophenone and substituted benzaldehydes using pyrrolidine as an organobase catalyst under mild reaction condition. The merits of this method are short reaction time, operational simplicity, high yield and greener solvent media.