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

HRID 539050Notes

Reaction equation

HRID 539050 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][CH:17]=4)[CH2:14][O:13][C:12]3=[O:22])=[N:7][C:6]=12.C(=O)([O-])[O-].[Na+].[Na+].CC1(C)C(C)(C)OB([C:37]2[CH:42]=[CH:41][C:40]([C:43]3[N:47]=[CH:46][N:45]([CH2:48][O:49][CH2:50][CH2:51][Si:52]([CH3:55])([CH3:54])[CH3:53])[N:44]=3)=[CH:39][CH:38]=2)O1.CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C>O1CCOCC1.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].O>[C:16]1([C@H:15]2[CH2:14][O:13][C:12](=[O:22])[N:11]2[C:8]2[CH:9]=[CH:10][N:5]3[N:4]=[CH:3][C:2]([C:37]4[CH:38]=[CH:39][C:40]([C:43]5[N:47]=[CH:46][N:45]([CH2:48][O:49][CH2:50][CH2:51][Si:52]([CH3:55])([CH3:54])[CH3:53])[N:44]=5)=[CH:41][CH:42]=4)=[C:6]3[N:7]=2)[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

Participants

8

Reactant 4

HCID 10340Sodium CarbonateHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 595255703-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazoleHCID 67034277(S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-phenyloxazolidin-2-one

Product 1

HCID 67034450(S)-4-phenyl-3-(3-(4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)oxazolidin-2-oneYield 74%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-phenyloxazolidin-2-one (0.7 g, 1.9 mmol) in dioxane bubbled with nitrogen was added sodium carbonate (2.0 M, 4.9 mL, 9.7 mmol) and 3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazole (1.0 g, 2.5 mmol), and the reaction was degassed with nitrogen for 30 minutes. XPHOS (0.093 g, 0.19 mmol) and Pd2 dba3 (0.089 g, 0.097 mmol) were added to the mixture and the reaction was stirred for 2 hours at 80° C. The reaction was poured into water and the aqueous layer extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4 and concentrated in vacuo. The crude material purified by normal phase chromatography using 25% EtOAc/DCM as the eluent to yield (S)-4-phenyl-3-(3-(4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)oxazolidin-2-one (0.80 g, 1.4 mmol, 74% yield).

Workup

  1. customthe reaction was degassed with nitrogen for 30 minutes
  2. extractionthe aqueous layer extracted with EtOAc
  3. washThe organic layer was washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe crude material purified by normal phase chromatography

Sources & evidence

ORD record
ord-cccb3dbe7ef74972b243faf143ca6a8e
Source dataset
uspto-grants-2014_10
Patent number
US08865726B2

Reaction notes

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