Potassium Fluoride → HCID 67980772, compound

HRID 2407024Notes

Reaction equation

Br[C:2]1[CH:9]=[CH:8][C:5]([C:6]#[N:7])=[C:4]([O:10][CH3:11])[CH:3]=1.[F:12][C:13]([F:24])([F:23])[C:14]1[CH:19]=[CH:18][C:17](B(O)O)=[CH:16][CH:15]=1.[F-].[K+]>C1(C)C=CC=CC=1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:11][O:10][C:4]1[CH:3]=[C:2]([C:17]2[CH:18]=[CH:19][C:14]([C:13]([F:24])([F:23])[F:12])=[CH:15][CH:16]=2)[CH:9]=[CH:8][C:5]=1[C:6]#[N:7]

Participants

Conditions

Temperature: 110 °C

Procedure

To a solution of 4-bromo-2-methoxybenzonitrile (2.08 g, 9.81 mmol) and 4-(trifluoromethyl)phenylboronic acid (2.80 g, 14.7 mmol), potassium fluoride (1.71 g, 29.4 mmol) and Pd(PPh3)4 (1.13 g, 0.98 mmol) in toluene (40 mL) added water (10 mL). The mixture was stirred at 110° C. for 12 h. The reaction mixture was diluted with water and extracted with ethyl acetate (20 mL×3). The combined organic layers were dried over anhydrous Na2SO4 and concentrated under reduced pressure. Purification by silica gel chromatography gave 3-methoxy-4′-(trifluoromethyl)biphenyl-4-carbonitrile (2.66 g) as a colorless solid. 1H NMR (400 MHz, CDCl3) δ 7.67 (d, J=8.4 Hz, 2H), 7.63-7.56 (m, 3H), 7.15 (dd, J=8.0, 1.2 Hz, 1H), 7.06 (s, 1H), 3.95 (s, 3H).

Workup

extractionextracted with ethyl acetate (20 mL×3)
dry with materialThe combined organic layers were dried over anhydrous Na2SO4
concentrationconcentrated under reduced pressure
customPurification by silica gel chromatography

Sources & evidence

ORD record: ord-5b1bd8f14fd5436aa738e2d82a3876c8
Source dataset: uspto-grants-2014_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08809342B2

Reaction notes

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