1-Butanol → 4-(1H-pyrrol-3-yl)-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine

HRID 1617361Notes

Reaction equation

HRID 1617361 reaction equation
Cl[C:2]1[C:3]2[CH:10]=[CH:9][N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])[C:4]=2[N:5]=[CH:6][N:7]=1.C(O)CCC.C([Si](C(C)C)(C(C)C)[N:28]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29]1)(C)C.C(=O)([O-])[O-].[K+].[K+]>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O>[NH:28]1[CH:32]=[CH:31][C:30]([C:2]2[C:3]3[CH:10]=[CH:9][N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])[C:4]=3[N:5]=[CH:6][N:7]=2)=[CH:29]1

Participants

7

Reactant 4

HCID 2631-ButanolHCID 11430Potassium CarbonateHCID 27633031-(Triisopropylsilyl)pyrrole-3-boronic acidHCID 467367974-Chloro-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo(2,3-d)pyrimidine

Product 1

HCID 584312944-(1H-pyrrol-3-yl)-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 962WaterSolvent

Conditions

Temperature
100 °C

Procedure

A 100 mL round bottom flask was charged with 4-chloro-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine (1.00 g, 3.52 mmol), 1-butanol (25.0 mL), [1-(triisopropylsilyl)-1H-pyrrol-3-yl]boronic acid (1.41 g, 5.28 mmol), water (25.0 mL) and potassium carbonate (1.27 g, 8.8 mmol). This solution was degased 4 times, filling with nitrogen each time. Tetrakis(triphenylphosphine)-palladium(0) (0.41 g, 0.35 mmol) was added and the mixture was degased 4 times, filling with nitrogen each time. The reaction was stirred overnight at 100° C. and cooled to room temperature. The mixture was filtered through a bed of celite and the celite was rinsed with ethyl acetate (42 mL). The filtrate was combined and the organic layer was separated. The aqueous layer was extracted with ethyl acetate. The organic extracts were combined and concentrated under vacuum with a bath temperature of 30-70° C. to give the title compound 4-(1H-pyrrol-3-yl)-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine. Yield: 83%; LC-MS: 315.2 (M+H)+.

Workup

  1. customThis solution was degased 4 times
  2. customthe mixture was degased 4 times
  3. temperaturecooled to room temperature
  4. filtrationThe mixture was filtered through a bed of celite
  5. washthe celite was rinsed with ethyl acetate (42 mL)
  6. customthe organic layer was separated
  7. extractionThe aqueous layer was extracted with ethyl acetate
  8. concentrationconcentrated under vacuum with a bath temperature of 30-70° C.

Sources & evidence

ORD record
ord-fdc5f84ae88c462b893dc771a009918f
Source dataset
uspto-grants-2014_07
Patent number
US08765734B2

Reaction notes

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