3-Aminopropionitrile → 3-(4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-yl)propanenitrile

HRID 535744Notes

Reaction equation

HRID 535744 reaction equation
[Br:1][C:2]1[N:3]=[C:4]([CH:22]2[CH2:24][CH2:23]2)[N:5]([CH2:14][O:15][CH2:16][CH2:17][Si:18]([CH3:21])([CH3:20])[CH3:19])[C:6]=1[C:7]1[CH:12]=[CH:11][N:10]=[C:9](Cl)[N:8]=1.[NH2:25][CH2:26][CH2:27][C:28]#N.C(N(C(C)C)CC)(C)C.C([O-])([O-])=O.[Na+].[Na+]>CN1C(=O)CCC1>[Br:1][C:2]1[N:3]=[C:4]([CH:22]2[CH2:24][CH2:23]2)[N:5]([CH2:14][O:15][CH2:16][CH2:17][Si:18]([CH3:21])([CH3:20])[CH3:19])[C:6]=1[C:7]1[CH:12]=[CH:11][N:10]=[C:9]([CH2:28][CH2:27][C:26]#[N:25])[N:8]=1

Participants

6

Reactant 4

HCID 16473-AminopropionitrileHCID 10340Sodium CarbonateHCID 81531DiisopropylethylamineHCID 866514084-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy) methyl)-1H-imidazol-5-yl)-2-chloropyrimidine

Product 1

HCID 698129173-(4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-yl)propanenitrileYield 77.1%

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)-2-chloropyrimidine (I-1a, step 5, 3.50 g, 8.14 mmol), 3-aminopropionitrile (1.79 mL, 24.4 mmol), diisopropylethylamine (2.84 ml, 16.3 mmol) and Na2CO3 (1.73 g, 16.3 mmol) in dry NMP (4 mL) was heated at 90° C. for 8 hours. The reaction was cooled to room temperature, and then partitioned between EtOAc (100 mL) and water (100 mL), and the layers separated. The organic portion was washed with water (100 mL), saturated aqueous NaHCO3 solution (100 ml), brine (100 mL), dried (Na2SO4) and concentrated. The crude residue was purified by flash chromatography (SiO2, 0-50% EtOAc in heptane) to furnish 3-(4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-yl)propanenitrile as a pale yellow foam (2.91 g, 6.28 mmol). LCMS (m/z) 463.1 (MH+), tR=0.98 minute, 1H NMR (CDCl3) δ ppm −0.09 (s, 9H) 0.73-0.85 (m, 2H) 0.99-1.11 (m, 2H) 1.12-1.21 (m, 2H) 1.90-2.05 (m, 1H) 2.75 (t, J=6.7 Hz, 2H) 3.36-3.48 (m, 2H) 3.76 (q, J=6.5 Hz, 3H) 5.50 (br s, 1H) 5.85 (s, 2H) 7.20 (d, J=5.1 Hz, 1H) 8.37 (d, J=5.1 Hz, 1H).

Workup

  1. temperatureThe reaction was cooled to room temperature
  2. custompartitioned between EtOAc (100 mL) and water (100 mL)
  3. customthe layers separated
  4. washThe organic portion was washed with water (100 mL), saturated aqueous NaHCO3 solution (100 ml), brine (100 mL)
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated
  7. customThe crude residue was purified by flash chromatography (SiO2, 0-50% EtOAc in heptane)

Sources & evidence

ORD record
ord-684dd44664164ec9a26738b36bede592
Source dataset
uspto-grants-2014_10
Patent number
US08859548B2

Reaction notes

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