Potassium Carbonate → 1,1-dimethylethyl (3S)-3-({5-oxo-4-[4-(7-quinolinyl)phenyl]-4,5-dihydro-1H-1,2,4-triazol-3-yl}methyl)-1-pyrrolidinecarboxylate

HRID 2405441Notes

Reaction equation

HRID 2405441 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)=[CH:4][CH:3]=1.CC1(C)C(C)(C)OB([C:35]2[CH:44]=[C:43]3[C:38]([CH:39]=[CH:40][CH:41]=[N:42]3)=[CH:37][CH:36]=2)O1.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>[O:13]=[C:12]1[NH:11][N:10]=[C:9]([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)[N:8]1[C:5]1[CH:6]=[CH:7][C:2]([C:35]2[CH:44]=[C:43]3[C:38]([CH:39]=[CH:40][CH:41]=[N:42]3)=[CH:37][CH:36]=2)=[CH:3][CH:4]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 592961167-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)QuinolineHCID 673758331,1-dimethylethyl (3S)-3-{[4-(4-bromophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl]methyl}-1-pyrrolidinecarboxylate

Product 1

HCID 673769061,1-dimethylethyl (3S)-3-({5-oxo-4-[4-(7-quinolinyl)phenyl]-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-bromophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl]methyl}-1-pyrrolidinecarboxylate (1.181 mmol) in dioxane (6 mL) was treated with 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline (1.215 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)-dichloromethane adduct (50 mg), and 2M aq potassium carbonate (3 mL). The reaction mixture was purged with nitrogen, sealed, and stirred at 110° C. for 1 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 (6 mL). All dioxane filtrates were combined and concentrated in vacuo. Silica gel chromatography (0-20% methanol:ethyl acetate) was utilized in purifying the title compound (386 mg, 69%). MS(ES)+ m/e 472.2 [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 (6 mL)
  7. concentrationconcentrated in vacuo
  8. customin purifying the title compound (386 mg, 69%)

Sources & evidence

ORD record
ord-9f3f320b89e84bc7a78d7b67be0cea5b
Source dataset
uspto-grants-2014_08
Patent number
US08802864B2

Reaction notes

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