Table 2.

The¹ H-NMR (400 MHz) and MS (EI) spectra of the isatin derivatives

Comp. no.	Structure	1 H-NMR (400 MHz) and MS (EI) spectra
1		/
2		/
3		/
4		1 H-NMR (D6-Acetone), δ: 8.05 (1 H, d, J =7.2 Hz), 7.36 (1 H, t, J = 7.6 Hz), 7.04 (1 H, t, J = 7.6 Hz), 6.95 (1 H, d, J = 7.6 Hz), 6.84 (1 H, d, J = 7.6 Hz); MS m/z: 162 (M+)
5		1 H-NMR (D6-DMSO), δ: 12.40 (1 H, s), 11.08 (1 H, s), 9.06 (1 H, s), 8.95 (1 H, s), 7.66 (1 H, d, J = 7.6 Hz), 7.30 (1 H, t, J = 7.6), 7.10 (1 H, t, J = 7.6 Hz), 6.90 (1 H, d, J = 8.0 Hz); MS m/z: 204 (M+)
6		1 H-NMR (D6-DMSO), δ: 12.46 (1 H, s), 11.02 (1 H, s), 9.05 (1 H, s), 8.96 (1 H, s), 7.64 (1 H, d, J = 7.6 Hz), 7.34 (1 H, t, J = 7.6), 7.08 (1 H, t, J = 7.6 Hz), 6.91 (1 H, d, J = 8.0 Hz); MS m/z: 220 (M+)
7		1 H-NMR (D6-DMSO), δ: 12.01 (1 H, s), 11.01 (1 H, s), 9.23 (1 H, s), 8.90 (1 H, s), 7.54 (1 H, d, J = 7.6 Hz), 7.30 (1 H, t, J = 7.6), 6.86 (1 H, d, J = 8.0 Hz), 2.48 (1 H, s); MS m/z: 218 (M+)
8		1 H-NMR (D6-DMSO), δ: 10.92 (1 H, s), 9.56 (1 H, s), 7.32 (2 H, m), 6.86 (4 H, m), 6.74 (3 H, m); MS m/z: 238 (M+)
9		1 H-NMR (CDCl3), δ: 9.14 (1 H, s), 7.32 (1 H, d, J = 7.2 Hz), 7.08 (2 H, d, J = 8.8 Hz), 6.99 (3 H, m), 6.93 (1 H, d, J = 8.0 Hz), 6.79 (1 H, t, J = 7.6 Hz), 3.88 (3 H, s); MS m/z: 253 (M+)
10		1 H-NMR (CDCl3), δ: 9.98 (1 H, s), 7.64 (1 H, d, J = 7.2 Hz), 7.42 (1 H, d, J = 7.2 Hz), 7.14 (2 H, d, J = 8.8 Hz), 7.02 (3 H, m), 6.81 (1 H, d, J = 8.0 Hz); MS m/z: 256 (M+)