3.2.7. (Z)-1-Methyl-3-(1-(4-methoxyphenyl)ethylidene)indolin-2-one (**(***Z***)-5d**)

62% Yield; yellow solid; mp = 125.0–127.3 ◦C; *R*<sup>f</sup> = 0.26 (silica gel, hexane:EtOAc: CH2Cl2 = 4:1:1); 1H NMR (500 MHz, CDCl3): *δ* 7.61 (d, *J* = 7.6 Hz, 1H), 7.31 (dd, *J* = 6.4, 4.8 Hz, 2H), 7.25 (t, *J* = 7.7 Hz, 1H), 7.05 (t, *J* = 7.6 Hz, 1H), 6.92 (t, *J* = 5.6 Hz, 2H), 6.79 (d, *J* = 7.7 Hz, 1H), 3.82 (s, 3H), 3.13 (s, 3H), 2.61 (s, 3H) ppm; 13C NMR (125 MHz, CDCl3) *δ* 166.5, 160.0, 153.4, 143.1, 134.2, 129.6, 128.2, 124.0, 123.9, 123.2, 121.8, 113.5, 107.8, 55.4, 25.8, 25.7 ppm; HRMS (EI): calcd for C18H17NO2 [M+] : 279.1259, found 279.1255.
