1-(4-fluorophenyl)-3-hydroxy-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one → 1-(4-fluorophenyl)-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one

Participants

Reaction Steps

Following the procedure as described in PREPARATION 82C and making non-critical variations using 1-(4-fluorophenyl)-3-hydroxy-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one to replace 1-(diphenylmethyl)-4-fluoro-3-hydroxy-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one, 1-(4-fluorophenyl)-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one was obtained (59%) as a colourless solid: 1H NMR (300 MHz, DMSO-d6) δ 9.16 (s, 1H), 7.51-7.39 (m, 4H), 7.17 (dd, J=7.6 Hz, 7.6 Hz, 1H), 7.05-6.96 (m, 2H), 6.67 (s, 1H), 6.68 (d, J=7.8 Hz, 1H), 6.27 (s, 1H), 4.84 (s, 1H), 4.19-4.12 (m, 4H): MS (ES+) m/z 378.2 (M+1).

Provenance & Evidence