Cesium fluoride → 5-Chloro-4-methoxy-4'-trifluoromethyl-biphenyl-3-carboxylic acid methyl ester

HRID 2373814Notes

Reaction equation

[F:1][C:2]([F:13])([F:12])[C:3]1[CH:8]=[CH:7][C:6](B(O)O)=[CH:5][CH:4]=1.[CH3:14][O:15][C:16](=[O:27])[C:17]1[CH:22]=[C:21](Br)[CH:20]=[C:19]([Cl:24])[C:18]=1[O:25][CH3:26].[F-].[Cs+]>COCCOC.CCOC(C)=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>[CH3:14][O:15][C:16]([C:17]1[CH:22]=[C:21]([C:6]2[CH:7]=[CH:8][C:3]([C:2]([F:13])([F:12])[F:1])=[CH:4][CH:5]=2)[CH:20]=[C:19]([Cl:24])[C:18]=1[O:25][CH3:26])=[O:27]

Participants

Conditions

Temperature: 85 °C

Procedure

4-Trifluoromethylphenylboronic acid (0.815 g, 4.29 mmol) was added to a solution of 5-Bromo-3-chloro-2-methoxy-benzoic acid methyl ester (1.0 g, 3.57 mmol), Pd(PPh3)4 (0.2 g, 0.178 mmol) and CsF (1.08 g, 7.15 mmol) in DME (10 mL ) and heated at 85° C. for 10 h. The reaction was diluted with EtOAc (20 mL) and filtered, filtrate was washed water, brine and dried over Na2SO4. Solvent was removed under reduced pressure and the silicagel column chromatography gave pure 5-Chloro-4-methoxy-4′-trifluoromethyl-biphenyl-3-carboxylic acid methyl ester (0.94 g).

Workup

filtrationfiltered
washfiltrate was washed water, brine
dry with materialdried over Na2SO4
customSolvent was removed under reduced pressure

Sources & evidence

ORD record: ord-e88e7ec2290d45b9816d91f42f94d7bf
Source dataset: uspto-grants-2008_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07459472B2

Reaction notes

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