Water → HCID 86716177, compound

HRID 512154Notes

Reaction equation

Cl[C:2]1[N:7]=[CH:6][C:5]([C:8]2([C:16]#[N:17])[CH2:13][CH2:12][C:11]([F:15])([F:14])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[Br:18][Si](C)(C)C.O.[OH-].[Na+]>C(#N)CCC>[Br:18][C:2]1[N:7]=[CH:6][C:5]([C:8]2([C:16]#[N:17])[CH2:13][CH2:12][C:11]([F:15])([F:14])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 120 °C

Procedure

To a stirred solution of 1-(6-chloro-pyridin-3-yl)-4,4-difluoro-cyclohexanecarbonitrile (1.3 g, 5.1 mmol) in butyronitrile (100 mL) at room temperature under nitrogen atmosphere was added bromotrimethylsilane (1.55 g, 10.2 mmol). The reaction mixture was heated at 120° C. for 24 hours. The reaction mixture was then cooled to room temperature and poured into water (25 mL) and 10% aqueous NaOH solution (25 mL). The aqueous layer was extracted with diethyl ether (3×250 mL). The combined organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure. The crude residue was then purified by column chromatography on silica gel to afford 1-(6-bromo-pyridin-3-yl)-4,4-difluoro-cyclohexanecarbonitrile as a white solid (1.0 g, 65%). LC-MS (m/z) 301.0 (MH+). 1H NMR (400 MHz, CDCl3) δ ppm 8.55 (d, J=2.7 Hz, 1 H), 7.69 (dd, J=8.4, 2.8 Hz, 1 H), 7.57 (d, J=8.4 Hz, 1 H), 2.09-2.41 (m, 8 H).

Workup

temperatureThe reaction mixture was then cooled to room temperature
extractionThe aqueous layer was extracted with diethyl ether (3×250 mL)
dry with materialThe combined organic layer was dried over sodium sulfate
filtrationfiltered
concentrationconcentrated under reduced pressure
customThe crude residue was then purified by column chromatography on silica gel

Sources & evidence

ORD record: ord-788dfead40eb4301af50854b87bee34c
Source dataset: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09102591B2

Reaction notes

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