Catalase-mediated cyclization: Synthesis of 3-allyl-4-imino substituted 2(1H)-quinazolinones and 1,3-benzoxazine-2(3H)-ones

Abstract The cyclization of N-allyl carbamoyl anthranilonitriles as well as O-allylcarbamoyl salicylonitrile to 2(1H)-quinazolinones and 1,3-benzoxazine-2(3H)-ones in quantitative yields by employing catalase has been described.