Green and efficient one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones and their anthelmintic studies

A facile and highly efficient one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones derivatives has been developed by the condensation of anthranilamide with aldehydes using sulfonic acid functionalized l-Proline@Fe3O4 nanoparticles as a catalyst. The advantages of this protocol are easy recovery and reusability of the catalyst besides simple work-up procedure and short reaction time. In addition, the anthelmintic activities of some selective compounds were investigated and it was found that 2-phenyl-2,3-dihydroquinazolin-4(1H)-one exhibited profound anthelmintic activity against two helminth models.