  A novel and practical copper-catalyzed approach is developed for the
preparation of 5-arylindazolo[3,2-b]quinazolin-7(5H)-ones. The
2-amino-N'-arylbenzohydrazide, which easily prepared by reaction of isatoic
anhydride with arylhydrazine, through a condensation/intramolecular cyclization
reacted by 2-nitrobenzaldehydes in the present of CuI to afford corresponding
5-arylindazolo[3,2-b]quinazolin-7(5H)-ones in good yields.
