Sodium Carbonate → 4-Methyl-2-(5-pyridin-2-yl-4'-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester

HRID 889701Notes

Reaction equation

HRID 889701 reaction equation
[CH2:1]([O:3][C:4](=[O:34])[CH:5]([C:10]1[CH:11]=[C:12]([C:24]2[CH:29]=[CH:28][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:26][CH:25]=2)[CH:13]=[C:14](OS(C(F)(F)F)(=O)=O)[CH:15]=1)[CH2:6][CH:7]([CH3:9])[CH3:8])[CH3:2].[N:35]1[CH:40]=[CH:39][CH:38]=[CH:37][C:36]=1B1OC(C)(C)C(C)(C)O1.C([O-])([O-])=O.[Na+].[Na+]>C(COC)OC.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>[CH2:1]([O:3][C:4](=[O:34])[CH:5]([C:10]1[CH:11]=[C:12]([C:24]2[CH:25]=[CH:26][C:27]([C:30]([F:32])([F:33])[F:31])=[CH:28][CH:29]=2)[CH:13]=[C:14]([C:36]2[CH:37]=[CH:38][CH:39]=[CH:40][N:35]=2)[CH:15]=1)[CH2:6][CH:7]([CH3:9])[CH3:8])[CH3:2]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 11241171Pyridine-2-boronic acid, pinacol esterHCID 577550554-Methyl-2-(5-trifluoromethanesulfonyloxy-4'-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester

Product 1

HCID 576660264-Methyl-2-(5-pyridin-2-yl-4'-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl esterYield 33%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 4-Methyl-2-(5-trifluoromethanesulfonyloxy-4′-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester, compound 1g (105 mg, 0.205 mmol) in dimethoxyethane (1.4 mL), was added 2-pyridine boronic acid pinacol ester adduct (169 mg, 0.41 mmol), and 2M Na2CO3 (0.31 ml, 0.614 mmol). The mixture was degassed, tetrakis(triphenylphosphine)palladium (0) (24.0 mg, 0.02 mmol) was added and the mixture was degassed again, and then heated to 80° C. overnight. The reaction was cooled to room temperature, diluted with EtOAc and washed with NaHCO3 and brine. Purification by column chromatography gave the title compound (30 mg, 33%). Calcd for C26H26F3NO2 (M+H) 441.49, Found 442.2.

Workup

  1. customThe mixture was degassed
  2. customthe mixture was degassed again
  3. temperatureThe reaction was cooled to room temperature
  4. additiondiluted with EtOAc
  5. washwashed with NaHCO3 and brine
  6. customPurification by column chromatography

Sources & evidence

ORD record
ord-579e8a5de1994b30a81d7243bc35e239
Source dataset
uspto-grants-2012_08
Patent number
US08252935B2

Reaction notes

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