2-Fluoro-4-nitrophenol → 7-(2-fluoro-4-nitrophenoxy)-1H-pyrrolo[2,3-c]pyridine

HRID 500891Notes

Reaction equation

Cl[C:2]1[N:3]=[CH:4][CH:5]=[C:6]2[CH:10]=[CH:9][NH:8][C:7]=12.[F:11][C:12]1[CH:17]=[C:16]([N+:18]([O-:20])=[O:19])[CH:15]=[CH:14][C:13]=1[OH:21].C([O-])([O-])=O.[K+].[K+]>O(C1C=CC=CC=1)C1C=CC=CC=1>[F:11][C:12]1[CH:17]=[C:16]([N+:18]([O-:20])=[O:19])[CH:15]=[CH:14][C:13]=1[O:21][C:2]1[N:3]=[CH:4][CH:5]=[C:6]2[CH:10]=[CH:9][NH:8][C:7]=12

Participants

Conditions

Temperature: 200 °C

Procedure

A mixture of 259 (420mg, 2.76 mmol), 2-fluoro-4-nitrophenol (651 mg, 4.14 mmol) and K2CO3(1.14 g, 8.28 mmol) in Ph2O (15 mL) was heated at 200° C. for 6 hours, cooled to room temperature and partitioned between EtOAc and water. Organic phase was collected, dried and concentrated. The residue was purified by flash column chromatography with gradient elution from hexane to hexane/EtOAc (3:1), to afford the title compound 260 (333 mg, 44% yield) as a yellowish solid. MS (m/z): 274.1(M+H) (found).

Workup

temperaturecooled to room temperature
custompartitioned between EtOAc and water
customOrganic phase was collected
customdried
concentrationconcentrated
customThe residue was purified by flash column chromatography with gradient elution from hexane to hexane/EtOAc (3:1)

Sources & evidence

ORD record: ord-9ec81a0a0f274127ae791aa4cdc354df
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07772247B2

Reaction notes

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