(2-p-tolylnaphthalen-1-yl)methylene)benzenamine (4c)Light yellow solid; mp: 173-174 oC; 1H NMR (CDCl3, 300 MHz): δ 7.87-7.69 (m, 5H), 7.49-7.39 (m, 2H), 7.33 (d, J = 8.5 Hz, 1H), 7.20 (d, J= 7.8 Hz, 2H), 7.02 (d, J = 7.7 Hz, 2H), 7.6.89-6.75 (m, 5H...