Ethanol → 4-[4-(1-phenylvinyl)-1H-pyrazol-1-yl]-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

HRID 44964Notes

Reaction equation

HRID 44964 reaction equation
[C:1]1([C:7](B(O)O)=[CH2:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Br[C:13]1[CH:14]=[N:15][N:16]([C:18]2[CH:23]=[CH:22][N:21]=[C:20]3[N:24]([CH2:27][O:28][CH2:29][CH2:30][Si:31]([CH3:34])([CH3:33])[CH3:32])[CH:25]=[CH:26][C:19]=23)[CH:17]=1.C1(C)C=CC=CC=1.C(O)C.C(=O)([O-])[O-].[K+].[K+].O>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]1([C:7]([C:13]2[CH:14]=[N:15][N:16]([C:18]3[CH:23]=[CH:22][N:21]=[C:20]4[N:24]([CH2:27][O:28][CH2:29][CH2:30][Si:31]([CH3:34])([CH3:33])[CH3:32])[CH:25]=[CH:26][C:19]=34)[CH:17]=2)=[CH2:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

8

Reactant 6

HCID 702EthanolHCID 962WaterHCID 1140TolueneHCID 11430Potassium CarbonateHCID 5003684(1-Phenylvinyl)boronic acidHCID 574776734-(4-bromo-1H-pyrazol-1-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 574776744-[4-(1-phenylvinyl)-1H-pyrazol-1-yl]-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

Reagents, catalysts & solvents 1

HCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
100 °C

Procedure

A mixture of (1-phenylvinyl)boronic acid (24.0 mg, 0.000162 mol) and 4-(4-bromo-1H-pyrazol-1-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine (50.0 mg, 0.000127 mol) in toluene (2.00 mL, 0.0188 mol) and ethanol (0.50 mL, 0.0086 mol) was treated with potassium carbonate (35 mg, 0.00025 mol) in water (1.00 mL, 0.0555 mol). The mixture was degassed by bubbling nitrogen. Tetrakis(triphenylphosphine)palladium(0) (10 mg, 0.00001 mol) was added and nitrogen was bubbled for 3 min. The reaction was heated in a sealed tube in the microwave at 100° C. for 30 min. The reaction was allowed to cool to rt and partitioned between ethyl acetate and water. The combined organic layer was dried over MgSO4, filtered and concentrated to give the crude material The crude product was purified by FCC on silica gel eluting with EtOAc/Hexanes (1:5) to give 4-[4-(1-phenylvinyl)-1H-pyrazol-1-yl]-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]-pyridine as a solid residue, LC/MS (M+H)+: 417.

Workup

  1. customThe mixture was degassed
  2. customby bubbling nitrogen
  3. customnitrogen was bubbled for 3 min
  4. temperatureto cool to rt
  5. custompartitioned between ethyl acetate and water
  6. dry with materialThe combined organic layer was dried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customto give the crude material The crude product
  10. customwas purified by FCC on silica gel eluting with EtOAc/Hexanes (1:5)

Sources & evidence

ORD record
ord-5454740407bd40cd836470c79a435e9e
Source dataset
uspto-grants-2013_09
Patent number
US08541425B2

Reaction notes

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