Potassium Carbonate → Methyl 2'-methyl-2-(trifluoromethyl)-[1,1'-biphenyl]-4-carboxylate

HRID 1950826Notes

Reaction equation

HRID 1950826 reaction equation
Br[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[C:12]([F:15])([F:14])[F:13].[C:16]1([CH3:25])[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1B(O)O.C(=O)([O-])[O-].[K+].[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>[CH3:25][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[C:12]([F:15])([F:14])[F:13]

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 27332672-Methylphenyl boronic acidHCID 10891333Methyl 4-bromo-3-(trifluoromethyl)benzoate

Product 1

HCID 58554190Methyl 2'-methyl-2-(trifluoromethyl)-[1,1'-biphenyl]-4-carboxylateYield 80.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

A mixture of methyl 4-bromo-3-(trifluoromethyl)benzoate (6 g; 21.2 mmol; 1 eq.), o-tolylboronic acid (3.17 g; 23.3 mmol; 1.1 eq.), potassium carbonate (14.65 g; 106 mmol; 5 eq.) and Pd(PPh3)4 (2.45 g; 2.12 mmol; 0.1 eq.) in toluene (30 mL) and water (30 mL) was refluxed for 3 hours. After cooling to room temperature, the reaction mixture was filtered through a pad of Celite® which was further washed with toluene (20 mL). The filtrate was concentrated in vacuo, the residue taken up in ethyl acetate (200 mL) and washed with sat. aq. NaHCO3 (100 mL), water (100 mL) and brine (100 mL), dried over magnesium sulphate and concentrated in vacuo to afford the title compound (5 g, 80%) as a brown oil

Workup

  1. temperaturewas refluxed for 3 hours
  2. filtrationthe reaction mixture was filtered through a pad of Celite® which
  3. washwas further washed with toluene (20 mL)
  4. concentrationThe filtrate was concentrated in vacuo
  5. washwashed with sat. aq. NaHCO3 (100 mL), water (100 mL) and brine (100 mL)
  6. dry with materialdried over magnesium sulphate
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-daa89f2650ca475ab7f7ecca8324b721
Source dataset
uspto-grants-2013_03
Patent number
US08404676B2

Reaction notes

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