Ammonium Hydroxide → 4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-amine

HRID 885744Notes

Reaction equation

HRID 885744 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.[NH4+:25].[OH-]>O1CCOCC1.O>[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]([NH2:25])[N:8]=1

Participants

5

Reactant 2

HCID 14923Ammonium HydroxideHCID 866514084-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy) methyl)-1H-imidazol-5-yl)-2-chloropyrimidine

Product 1

HCID 698129254-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-amineYield 91%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Procedure

4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)-2-chloropyrimidine (1 g, 2.4 mmol) was combined with aqueous 28% NH4OH solution (8 mL) in 1,4-dioxane (8 mL) and the resulting mixture was split evenly between two reaction vials. Each was irradiated in a microwave reactor for 40 minutes at 130° C. TLC analysis indicated complete reaction. The combined reactions were then diluted with water (100 mL) followed by extraction with EtOAc (100 mL). The EtOAc layer was washed with brine then dried (Na2SO4), and concentrated. Purification of the resulting residue by flash chromatography on silica gel using an EtOAc-hexanes gradient (0 to 60%) provided 0.87 g of (2.1 mmol, 91%) of 4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-amine as a white solid: LCMS(m/z): 410.0 (MH+), tR=0.81 minute.

Workup

  1. customthe resulting mixture was split evenly between two reaction vials
  2. customEach was irradiated in a microwave reactor for 40 minutes at 130° C
  3. customreaction
  4. extractionfollowed by extraction with EtOAc (100 mL)
  5. washThe EtOAc layer was washed with brine
  6. dry with materialthen dried (Na2SO4)
  7. concentrationconcentrated
  8. customPurification of the resulting residue by flash chromatography on silica gel using an EtOAc-hexanes gradient (0 to 60%)

Sources & evidence

ORD record
ord-9f620c0bd2c34baabc1c3f75a40bfc46
Source dataset
uspto-grants-2012_08
Patent number
US08242260B2

Reaction notes

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