Figure 1

Synthesis of N-allyl-4-(4-(N-phenylureido)benzylamino)-1,8-naphthalimide. i) EtOH, reflux, 3 h, 94% ii) 110 °C, 2 h, 72% for 3, iii) DMF, TEA, r.t, 15–84 h, 4 94%.

Synthesis of N-allyl-4-(4-(N-phenylureido)benzylamino)-1,8-naphthalimide. i) EtOH, reflux, 3 h, 94% ii) 110 °C, 2 h, 72% for 3, iii) DMF, TEA, r.t, 15–84 h, 4 94%.