Sodium Carbonate → (S)-3-(3-(3-fluoro-4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(pyridin-2-yl)oxazolidin-2-one

HRID 539130Notes

Reaction equation

HRID 539130 reaction equation
Br[C:2]1[CH:3]=[N:4][N:5]2[CH:10]=[CH:9][C:8]([N:11]3[C@@H:15]([C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=4)[CH2:14][O:13][C:12]3=[O:22])=[N:7][C:6]=12.[F:23][C:24]1[CH:29]=[C:28](B2OC(C)(C)C(C)(C)O2)[CH:27]=[CH:26][C:25]=1[C:39]1[N:43]=[CH:42][N:41]([CH2:44][O:45][CH2:46][CH2:47][Si:48]([CH3:51])([CH3:50])[CH3:49])[N:40]=1.C(=O)([O-])[O-].[Na+].[Na+].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C>CCOC(C)=O.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[F:23][C:24]1[CH:29]=[C:28]([C:2]2[CH:3]=[N:4][N:5]3[CH:10]=[CH:9][C:8]([N:11]4[C@@H:15]([C:16]5[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=5)[CH2:14][O:13][C:12]4=[O:22])=[N:7][C:6]=23)[CH:27]=[CH:26][C:25]=1[C:39]1[N:43]=[CH:42][N:41]([CH2:44][O:45][CH2:46][CH2:47][Si:48]([CH3:51])([CH3:50])[CH3:49])[N:40]=1

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 67034012HCID 67034012, compoundHCID 67034603(S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-(pyridin-2-yl)oxazolidin-2-one

Product 1

HCID 68089128(S)-3-(3-(3-fluoro-4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(pyridin-2-yl)oxazolidin-2-oneYield 22.8%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-(pyridin-2-yl)oxazolidin-2-one (0.25 g, 0.69 mmol) in dioxanes (70 mL) purged continuously with nitrogen gas was added 3-(2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazole (0.44 g, 1.0 mmol) and sodium carbonate (1.7 mL, 3.5 mmol) (2M in water). Pd2 dba3 (70 mg) and X-Phos (70 mg) were added, and the reaction mixture was stirred at 80° C. for 3 hours, then diluted with EtOAc (200 mL). The organic layer was washed with water and brine, dried over MgSO4, filtered concentrated in vacuo. The crude material was chromatographed using 50% EtOAc/hexane as eluent to yield (S)-3-(3-(3-fluoro-4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(pyridin-2-yl)oxazolidin-2-one (0.090 g, 22.5%).

Workup

  1. washThe organic layer was washed with water and brine
  2. dry with materialdried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe crude material was chromatographed

Sources & evidence

ORD record
ord-1e534fb800c34ac28e9f0229220498a8
Source dataset
uspto-grants-2014_10
Patent number
US08865726B2

Reaction notes

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