Iodoethane → 3-butyl-1-ethyl-7-(phenylmethyl)-3,7-dihydro-1H-purine-2,6-dione

HRID 1943831Notes

Reaction equation

HRID 1943831 reaction equation
[CH2:1]([N:5]1[C:13]2[N:12]=[CH:11][N:10]([CH2:14][C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)[C:9]=2[C:8](=[O:21])[NH:7][C:6]1=[O:22])[CH2:2][CH2:3][CH3:4].C(=O)([O-])[O-].[K+].[K+].I[CH2:30][CH3:31]>CN(C=O)C>[CH2:1]([N:5]1[C:13]2[N:12]=[CH:11][N:10]([CH2:14][C:15]3[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=3)[C:9]=2[C:8](=[O:21])[N:7]([CH2:30][CH3:31])[C:6]1=[O:22])[CH2:2][CH2:3][CH3:4]

Participants

5

Reactant 3

HCID 6340IodoethaneHCID 11430Potassium CarbonateHCID 39938667-Benzyl-3-butylxanthine

Product 1

HCID 592995543-butyl-1-ethyl-7-(phenylmethyl)-3,7-dihydro-1H-purine-2,6-dione

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

3-butyl-7-(phenylmethyl)-3,7-dihydro-1H-purine-2,6-dione (0.429 g, 1.24 mmol) and potassium carbonate (0.256 g, 1.85 mmol) were suspended in DMF (8 mL), iodoethane (0.113 mL, 1.42 mmol) was added. The reaction mixture was stirred at ambient temperature overnight. The reaction mixture was evaporated to dryness and the residue was partitioned between water and ethyl acetate. The organic layer was washed with water, followed by brine, dried over anhydrous sodium sulphate and concentrated under reduced pressure to yield the title compound; 1H NMR (400 MHz; CDCl3) δ: 0.96 (3H, t), 1.25 (3H, t), 1.36-1.45 (2H, m), 1.72-1.76 (2H, m), 4.05-4.13 (4H, m), 5.50 (2H, s), 7.32-7.40 (5H, m), 7.52 (1H, s); m/z 327[MH+].

Workup

  1. customThe reaction mixture was evaporated to dryness
  2. customthe residue was partitioned between water and ethyl acetate
  3. washThe organic layer was washed with water
  4. dry with materialdried over anhydrous sodium sulphate
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-9c3f344b3dfb45189245a75f78713d0d
Source dataset
uspto-grants-2013_03
Patent number
US08394808B2

Reaction notes

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