Potassium Carbonate → 1,1-dimethylethyl (3S)-3-({4-[3-fluoro-3'-(methyloxy)-4-biphenylyl]-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl}methyl)-1-pyrrolidinecarboxylate

HRID 525261Notes

Reaction equation

HRID 525261 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12](=[O:13])[NH:11][N:10]=[C:9]2[CH2:14][C@@H:15]2[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:16]2)=[C:4]([F:27])[CH:3]=1.[CH3:28][O:29][C:30]1[CH:31]=[C:32](B2OC(C)(C)C(C)(C)O2)[CH:33]=[CH:34][CH:35]=1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].ClCCl>[F:27][C:4]1[CH:3]=[C:2]([C:34]2[CH:33]=[CH:32][CH:31]=[C:30]([O:29][CH3:28])[CH:35]=2)[CH:7]=[CH:6][C:5]=1[N:8]1[C:12](=[O:13])[NH:11][N:10]=[C:9]1[CH2:14][C@@H:15]1[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:16]1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 114136432-(3-Methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 673758561,1-dimethylethyl (3S)-3-{[4-(4-bromo-2-fluorophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl]methyl}-1-pyrrolidinecarboxylate

Product 1

HCID 673772131,1-dimethylethyl (3S)-3-({4-[3-fluoro-3'-(methyloxy)-4-biphenylyl]-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl}methyl)-1-pyrrolidinecarboxylate

Reagents, catalysts & solvents 2

HCID 178418807HCID 178418807, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A solution of 1,1-dimethylethyl (3S)-3-{[4-(4-bromo-2-fluorophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl]methyl}-1-pyrrolidinecarboxylate (0.499 mmol) in dioxane (3 mL) was treated with 3-methoxyphenylboronic acid pinacol ester (0.513 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)-dichloromethane adduct (30 mg), and 2M aq potassium carbonate (1.5 mL). The reaction mixture was purged with nitrogen, sealed, and stirred at 110° C. for 2 h. The solution was cooled to room temperature and the dioxane layer separated from the aqueous layer. The dioxane layer was removed via pipette and was passed through a plug of celite and sodium sulfate. The plug was washed with dioxane (10 mL). All dioxane filtrates were combined and concentrated in vacuo. Silica gel chromatography (100% ethyl acetate) was utilized in purifying the title compound (212 mg, 88%). MS(ES)+ m/e 469.3 [M+H]+.

Workup

  1. customThe reaction mixture was purged with nitrogen
  2. customsealed
  3. temperatureThe solution was cooled to room temperature
  4. customthe dioxane layer separated from the aqueous layer
  5. customThe dioxane layer was removed via pipette
  6. washThe plug was washed with dioxane (10 mL)
  7. concentrationconcentrated in vacuo
  8. customin purifying the title compound (212 mg, 88%)

Sources & evidence

ORD record
ord-3ce0070d501442f297447a8b6eff0f3b
Source dataset
uspto-grants-2016_05
Patent number
US09340529B2

Reaction notes

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