Sodium Carbonate → 2-Chloro-5-(pyridin-4-yl)-4-((tetrahydro-2H-pyran-4-yl)oxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine

HRID 1487601Notes

Reaction equation

HRID 1487601 reaction equation
[Cl:1][C:2]1[N:3]=[C:4]([O:20][CH:21]2[CH2:26][CH2:25][O:24][CH2:23][CH2:22]2)[C:5]2[C:10](I)=[CH:9][N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:6]=2[N:7]=1.[N:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1.O1CCOCC1.C(=O)([O-])[O-].[Na+].[Na+]>[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>[Cl:1][C:2]1[N:3]=[C:4]([O:20][CH:21]2[CH2:26][CH2:25][O:24][CH2:23][CH2:22]2)[C:5]2[C:10]([C:30]3[CH:31]=[CH:32][N:27]=[CH:28][CH:29]=3)=[CH:9][N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:6]=2[N:7]=1

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 2734379(Pyridin-4-yl)boronic acidHCID 867264332-Chloro-5-iodo-4-((tetrahydro-2H-pyran-4-yl)oxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine

Product 1

HCID 867264362-Chloro-5-(pyridin-4-yl)-4-((tetrahydro-2H-pyran-4-yl)oxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidineYield 50.5%

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 962WaterSolvent

Conditions

Temperature
75 °C

Procedure

To a solution of 2-chloro-5-iodo-4-((tetrahydro-2H-pyran-4-yl)oxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (1 equiv), pyridin-4-ylboronic acid (1.1 equiv), tetrakis(triphenylphosphine)-palladium(0) (0.1 equiv) in a 5:1 mixture of 1,4-dioxane and water (0.17 M) was added sodium carbonate (2.1 equiv). The reaction was stirred at 75° C. for 3 h. The reaction mixture was quenched with saturated aqueous sodium chloride and then washed with ethyl acetate. The organic phase was combined and washed with saturated aqueous sodium chloride. The organic layer was dried (magnesium sulfate), filtered, and concentrated. The crude product was purified by silica gel column chromatography (0-90%) ethyl acetate (with 10% 1N ammonia in MeOH) in hexane) to give the title compound (50.5% yield) as a yellow oil. 1H NMR (400 MHz, DMSO-d6) δ ppm −0.06 (s, 9H) 0.82-0.91 (m, 2H) 1.74 (dtd, J=12.74, 8.37, 8.37, 3.71 Hz, 2H) 2.01-2.16 (m, 2H) 3.50-3.63 (m, 4H) 3.69-3.83 (m, 2H) 5.50 (tt, J=7.91, 3.81 Hz, 1H) 5.59 (s, 2H) 7.72 (d, J=6.25 Hz, 2H) 8.12 (s, 1H) 8.60 (d, J=6.25 Hz, 2H); MS (ESI) m/z 461.0 [M+1]+.

Workup

  1. customThe reaction mixture was quenched with saturated aqueous sodium chloride
  2. washwashed with ethyl acetate
  3. washwashed with saturated aqueous sodium chloride
  4. dry with materialThe organic layer was dried (magnesium sulfate)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product was purified by silica gel column chromatography (0-90%) ethyl acetate (with 10% 1N ammonia in MeOH) in hexane)

Sources & evidence

ORD record
ord-1e942ba4ab6347ea99da7a0de5d389d8
Source dataset
uspto-grants-2016_08
Patent number
US09428509B2

Reaction notes

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