Oxidant- and metal-free synthesis of 4(3H)-quinazolinones from 2-amino-N-methoxybenzamides and aldehydes via acid-promoted cyclocondensation and elimination
biologically important 4(3H)-quinazolinones were readily synthesized in good to excellent yields from 2-amino-N-methoxybenzamides and aldehydes via a cascade reaction consisting of AcOH-promoted cyclocondensation and elimination. The current method sets itself apart from the conventional approach utilizing anthranilamide derivatives and aldehydes as building blocks, by its unique features, other than the