Water → 5-(2-(4-Fluorophenyl)-3-(methylcarbamoyl)-6-nitrobenzofuran-5-yl)-2-methoxybenzoic acid

HRID 1892565Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[O:9][C:10]3[CH:20]=[C:19]([N+:21]([O-:23])=[O:22])[C:18]([C:24]4[CH:25]=[CH:26][C:27]([O:34][CH3:35])=[C:28]([CH:33]=4)[C:29]([O:31]C)=[O:30])=[CH:17][C:11]=3[C:12]=2[C:13](=[O:16])[NH:14][CH3:15])=[CH:4][CH:3]=1.O.[OH-].[Na+]>C1COCC1>[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[O:9][C:10]3[CH:20]=[C:19]([N+:21]([O-:23])=[O:22])[C:18]([C:24]4[CH:25]=[CH:26][C:27]([O:34][CH3:35])=[C:28]([CH:33]=4)[C:29]([OH:31])=[O:30])=[CH:17][C:11]=3[C:12]=2[C:13](=[O:16])[NH:14][CH3:15])=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of methyl 5-(2-(4-fluorophenyl)-3-(methylcarbamoyl)-6-nitrobenzofuran-5-yl)-2-methoxybenzoate (200 mg, 0.418 mmol) in THF (12 mL)/water (4.0 mL) at room temperature was added sodium hydroxide (1.045 mL, 2.090 mmol). The reaction mixture was heated to 50° C. and maintained at the same temperature for overnight. The reaction mixture was concentrated under vacuum to remove the solvent. The residue was diluted with water, acidified with 1.5 N HCl. The solid obtained was filtered and dried under suction. Yield: 175 mg (86%). 1H NMR (400 MHz, DMSO-d6) δ ppm 12.81 (br. s, 1H). 8.58 (q, J=4.52 Hz, 1H), 8.49 (s, 1H), 8.08-8.02 (m, 2H), 7.70 (s, 1H), 7.66 (d, J=2.51 Hz, 1H), 7.53 (dd, J=8.66, 2.38 Hz, 1H), 7.49-7.42 (m, 2H), 7.25 (s, 1H), 3.89 (s, 3H), 2.85 (d, J=4.77 Hz, 3H).

Workup

temperaturemaintained at the same temperature for overnight
concentrationThe reaction mixture was concentrated under vacuum
customto remove the solvent
additionThe residue was diluted with water
customThe solid obtained
filtrationwas filtered
customdried under suction

Sources & evidence

ORD record: ord-4f20831dc14f4a0aa1a16e800ef9ff7e
Source dataset: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08507683B2

Reaction notes

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