7-fluoro-3-hydroxy-3-(6-hydroxy-1,3-benzodioxol-5-yl)-1,3-dihydro-2H-indol-2-one → 7-fluoro-3-(6-hydroxy-1,3-benzodioxol-5-yl)-1,3-dihydro-2H-indol-2-one

Participants

Reaction Steps

Following the procedure as described in PREPARATION 2C, and making non-critical variations to replace 1-(2-cyclopropylethyl)-3-hydroxy-3-(6-hydroxy-1,3-benzodioxol-5-yl)-1,3-dihydro-2H-indol-2-one with 7-fluoro-3-hydroxy-3-(6-hydroxy-1,3-benzodioxol-5-yl)-1,3-dihydro-2H-indol-2-one, the title compound was obtained (100%): 1H NMR (300 MHz, DMSO-d6) δ 10.84 (s, 1H), 9.22 (s, 1H), 7.01 (t, 1H), 6.87-6.78 (m, 1H), 6.71 (d, 1H), 6.62 (s, 1H), 6.35 (s, 1H), 5.90-5.85 (m, 2H), 4.67 (s, 1H); MS (ES+) m/z 288.5 (M+1).

Provenance & Evidence