2-Fluoro-4-nitrophenol → 7-(2-Fluoro-4-nitrophenoxy)-2-(1-propyl-1H-imidazol-4-yl)thieno[3,2-b]pyridine

HRID 2193708Notes

Reaction equation

Cl[C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[CH:8]=[C:9]([C:11]3[N:12]=[CH:13][N:14]([CH2:16][CH2:17][CH3:18])[CH:15]=3)[S:10][C:3]=12.[F:19][C:20]1[CH:25]=[C:24]([N+:26]([O-:28])=[O:27])[CH:23]=[CH:22][C:21]=1[OH:29].C(=O)([O-])[O-].[K+].[K+].CO.C(Cl)Cl>O(C1C=CC=CC=1)C1C=CC=CC=1>[F:19][C:20]1[CH:25]=[C:24]([N+:26]([O-:28])=[O:27])[CH:23]=[CH:22][C:21]=1[O:29][C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[CH:8]=[C:9]([C:11]3[N:12]=[CH:13][N:14]([CH2:16][CH2:17][CH3:18])[CH:15]=3)[S:10][C:3]=12

Participants

Conditions

Temperature: 195 °C

Procedure

To a solution of 131 (3.37 g, 12.13 mmol) in Ph2O (40 ml) was added 2-fluoro-4-nitrophenol (3.81 g, 24.26 mmol) and potassium carbonate (6.70 g, 48.52 mmol). The reaction mixture was heated to 195° C. for 20 hrs then cooled to room temperature. The residue was purified by column chromatography, eluents EtOAc/Hex (9/1 to 5/5), then MeOH/DCM (98/2), to afford title compound 132 (4.13 g, 85% yield) as a yellow solid. MS (m/z): 399.0 (M+H).

Workup

temperaturethen cooled to room temperature
customThe residue was purified by column chromatography, eluents EtOAc/Hex (9/1 to 5/5)

Sources & evidence

ORD record: ord-7f53e6f4c1ac4d559e3bad88cae4a865
Source dataset: uspto-grants-2012_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08329726B2

Reaction notes

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