3.4.5. (E)-3-((E)-1-(4-Chlorophenyl)-3-phenylallylidene)-1-methylindolin-2-one (**3ba**)

95% Yield; yellow solid; mp = 178.2 ◦C; *R*<sup>f</sup> = 0.3 (silica gel, hexane:EtOAc = 6:1); 1H NMR (500 MHz, CDCl3): *δ* 9.37 (d, *J* = 16.1 Hz, 1H), 7.56–7.53 (m, 4H), 7.33 (t, *J* = 7.3 Hz, 2H), 7.29 (d, *J* = 7.1 Hz, 1H), 7.24 (dt, *J* = 12.8, 2.2 Hz, 2H), 7.13 (td, *J* = 7.7, 1.0 Hz, 1H), 6.76 (d, *J* = 7.7 Hz, 1H), 6.66 (td, *J* = 7.7, 0.9 Hz, 1H), 6.43 (d, *J* = 16.1 Hz, 1H), 5.86 (d, *J* = 7.7 Hz, 1H), 3.29 (s, 3H) ppm; 13C NMR (125 MHz, CDCl3): *δ* 167.9, 149.6, 143.0, 141.4, 136.8, 136.1, 134.6, 130.3, 129.7, 129.3, 128.9, 128.6, 128.0, 127.5, 123.5, 123.1, 122.8, 121.7, 107.8, 25.9 ppm; HRMS (EI): calcd for C24H18ClNO [M+]: 371.1077, found 371.1078.

#### 3.4.6. (E)-3-((E)-1,3-Bis(4-chlorophenyl)allylidene)-1-methylindolin-2-one (**3bb**)

79% Yield; yellow solid; mp = 193.0 ◦C; *<sup>R</sup>*<sup>f</sup> = 0.27 (silica gel, hexane:EtOAc = 8:1); 1H NMR (500 MHz, CDCl3): *<sup>δ</sup>* 9.33 (d, *<sup>J</sup>* = 16.1 Hz, 1H), 7.55 (d, *<sup>J</sup>* = 8.3 Hz, 2H), 7.44 (d, *J* = 8.4 Hz, 2H), 7.28 (d, *J* = 8.4 Hz, 2H), 7.23 (d, *J* = 8.3 Hz, 2H), 7.15 (t, *J* = 7.7 Hz, 1H), 6.76 (d, *J* = 7.8 Hz, 1H), 6.67 (t, *J* = 7.7 Hz, 1H), 6.35 (d, *J* = 16.1 Hz, 1H), 5.86 (d, *J* = 7.7 Hz, 1H), 3.28 (s, 3H) ppm; 13C NMR (125 MHz, CDCl3): *δ* 167.9, 167.2, 163.1, 139.7, 135.9, 135.3, 135.0, 134.8, 130.3, 129.8, 129.1, 128.8, 128.0, 123.7, 123.2, 123.0, 121.8, 107.8, 25.9 ppm; HRMS (EI): calcd for C24H17Cl2NO [M+]: 405.0687, found 405.0689.
