Ethyl Acetate → HCID 66855693, compound

HRID 2282263Notes

Reaction equation

HRID 2282263 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:12]3[S:13][C:14]([C:23]4[N:27]=[CH:26][N:25]([CH:28]5[CH2:33][CH2:32][CH2:31][CH2:30][O:29]5)[N:24]=4)=[C:15]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=4)[N:16]=3)=[C:9]([CH3:11])[N:10]=2)[CH:7]=1.[CH3:34][N:35]1[CH:39]=[C:38](B2OC(C)(C)C(C)(C)O2)[CH:37]=[N:36]1.C(=O)([O-])[O-].[Cs+].[Cs+].CCOC(C)=O>COCCOC.O>[CH3:11][C:9]1[N:10]=[C:5]2[CH:4]=[CH:3][C:2]([C:38]3[CH:37]=[N:36][N:35]([CH3:34])[CH:39]=3)=[CH:7][N:6]2[C:8]=1[C:12]1[S:13][C:14]([C:23]2[N:27]=[CH:26][N:25]([CH:28]3[CH2:33][CH2:32][CH2:31][CH2:30][O:29]3)[N:24]=2)=[C:15]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[N:16]=1

Participants

7

Reactant 4

HCID 8857Ethyl AcetateHCID 10796Cesium carbonateHCID 27739871-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 58094803HCID 58094803, compound

Product 1

HCID 66855693HCID 66855693, compoundYield 41%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
95 °C

Procedure

To a suspension of 6-bromo-2-methyl-3-{4-phenyl-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-1,3-thiazol-2-yl}imidazo[1,2-a]pyridine (157 mg, 0.3 mmol) obtained in Example 117-B(i) in DME (10 mL) and water (2 mL), were added 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (93.6 mg, 0.45 mmol), [1,1-bis(diphenylphosphino)ferrocene]palladium(II) dichloride dichloromethane complex (24.5 mg, 0.03 mmol) and cesium carbonate (293 mg, 0.9 mmol) under a nitrogen atmosphere, and the mixture was stirred at 95° C. for 12 h. The reaction mixture was allowed to cool to rt, and then were added water (40 mL) and EtOAc (40 mL). The aqueous layer was extracted with EtOAc (40 mL) and then a 1:1 mixture of EtOAc and THF (60 mL×2), and the combined organic layers were dried over anhydrous magnesium sulfate. Insoluble materials were removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was washed with THF to give the title compound (64.0 mg, 41%) as a white solid.

Workup

  1. temperatureto cool to rt
  2. extractionThe aqueous layer was extracted with EtOAc (40 mL)
  3. additiona 1:1 mixture of EtOAc and THF (60 mL×2)
  4. dry with materialthe combined organic layers were dried over anhydrous magnesium sulfate
  5. customInsoluble materials were removed by filtration
  6. concentrationthe filtrate was concentrated under reduced pressure
  7. washThe residue was washed with THF

Sources & evidence

ORD record
ord-7e2495146b6a497299844209ccf97f65
Source dataset
uspto-grants-2015_09
Patent number
US09139589B2

Reaction notes

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