4-Acetylbenzenesulphonamide → 4-{3E-[2,4-Dimethoxy-5-(1-methyl-1H-indol-2-yl)-phenyl]-acryloyl}-benzenesulfonamide

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The title compound was prepared by condensing 4-acetyl-benzenesulfonamide (Ex-26A) and 2,4-dimethoxy-5-(1-methyl-1H-indol-2-yl)-benzaldehyde (Ex-116A) in a similar manner as described in Ex-3. Yellow solid, 90% yield, mp 148–150° C. 1H-NMR (CDCl3) δ 8.17 (d, J=16 Hz, 1H), 8.09 (d, J=9 Hz, 2H), 8.01 (d, J=9 Hz, 2H), 7.68 (s, 1H), 7.64 (d, J=8 Hz, 1H), 7.47 (d, J=16 Hz, 1H), 7.35 (d, J=8 Hz, 1H), 7.22–7.26 (m, 1H), 7.11–7.16 (m, 1H), 6.58 (s, 1H), 6.50 (s, 1H), 4.92 (br, 2H), 4.02 (s, 3H), 3.90 (s, 3H), 3.58 (s, 3H). MS m/z=477 ([M+H]+, 100%). HRMS (ES+) Calcd. for C26H24NO5S: 477.1484. Found: 477.1487.

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