3.4.8. (E)-3-((E)-1-(4-Chlorophenyl)-3-(4-methoxyphenyl)allylidene)-1-methylindolin-2-one (**3bd**)

68% Yield; yellow solid; mp = 129.0 ◦C; *R*<sup>f</sup> = 0.38 (silica gel, CH2Cl2:hexane 5:1); 1H NMR (500 MHz, CDCl3): *δ* 9.24 (d, *J* = 16 Hz, 1H), 7.53 (dt, *J* = 13.1, 2.2 Hz, 2H), 7.48 (d, *J* = 8.7 Hz, 2H), 7.22 (dt, *J* = 12.6, 2.1 Hz, 2H), 7.11 (td, *J* = 7.4, 1.1 Hz, 1H), 6.85 (dt, *J* = 14.4, 2.4 Hz, 2H), 6.76 (d, *J* = 7.7 Hz, 1H), 6.64 (td, *J* = 7.7, 1.0, 1H), 6.38 (d, *J* = 16 Hz, 1H), 5.83 (d, *J* = 7.5 Hz, 1H), 3.82 (s, 3H), 3.30 (s, 3H) ppm; 13C NMR (125 MHz, CDCl3): *δ* 168.0, 160.8, 150.2, 142.8, 141.4, 136.4, 134.5, 130.3, 129.73, 129.65, 129.6, 128.3, 125.5, 123.3, 121.6, 114.4, 107.7, 55.5, 25.9. ppm; HRMS (EI): calcd for C25H20ClNO2 [M+]: 401.1183, found 401.1185.
