Methanol → 6-[(4,5-Dichloro-2-methyl-1H-imidazol-1-yl)methyl]-1,2,3,4-tetrahydro-3-methyl-1-(isobutyl)-2,4-dioxothieno[2,3-d]pyrimidine-5-carboxylic acid

HRID 131556Notes

Reaction equation

HRID 131556 reaction equation
[OH-].[Na+].CO.[Cl:5][C:6]1[N:7]=[C:8]([CH3:33])[N:9]([CH2:12][C:13]2[S:28][C:16]3[N:17]([CH2:24][CH:25]([CH3:27])[CH3:26])[C:18](=[O:23])[N:19]([CH3:22])[C:20](=[O:21])[C:15]=3[C:14]=2[C:29]([O:31]C)=[O:30])[C:10]=1[Cl:11]>O1CCCC1>[Cl:5][C:6]1[N:7]=[C:8]([CH3:33])[N:9]([CH2:12][C:13]2[S:28][C:16]3[N:17]([CH2:24][CH:25]([CH3:27])[CH3:26])[C:18](=[O:23])[N:19]([CH3:22])[C:20](=[O:21])[C:15]=3[C:14]=2[C:29]([OH:31])=[O:30])[C:10]=1[Cl:11]

Participants

5

Reactant 3

HCID 887MethanolHCID 14798Sodium HydroxideHCID 11453923Methyl 6-[4,5-dichloro-2-methyl-1H-imidazol-1-ylmethyl]-1,2,3,4-tetrahydro-3-methyl-1-(2-methylpropyl)-2,4-dioxo-thieno[2,3-d]pyrimidine-5-carboxylate

Product 1

HCID 113628036-[(4,5-Dichloro-2-methyl-1H-imidazol-1-yl)methyl]-1,2,3,4-tetrahydro-3-methyl-1-(isobutyl)-2,4-dioxothieno[2,3-d]pyrimidine-5-carboxylic acid

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Sodium hydroxide (7.3 ml of 1M aqueous solution) followed by methanol (4 ml) were added to a solution of the product of step c) (2.28 g) in tetrahydrofuran (50 ml) and stirred at room temperature for 3 h. The solution was concentrated under reduced pressure. The residue was diluted with water and extracted with ethyl acetate. The combined extracts were dried over magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by flash silica chromatography eluting with a gradient of 2-5% ethanol in dichloromethane to give the sub-title compound as a white solid (1.68 g). MS (APCI) 445/447 [M+H]+. δ 1HCDCl3 0.96 (6H,d), 2.22 (1H, septet), 2.37 (3H,s), 3.51 (3H,s), 3.78 (2H,d), 5.78 (2H,s), 15.51 (1H,br.s).

Workup

  1. concentrationThe solution was concentrated under reduced pressure
  2. additionThe residue was diluted with water
  3. extractionextracted with ethyl acetate
  4. dry with materialThe combined extracts were dried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash silica chromatography
  8. washeluting with a gradient of 2-5% ethanol in dichloromethane

Sources & evidence

ORD record
ord-263ec2d36204410a833f7f2d11602e2e
Source dataset
uspto-grants-2008_06
Patent number
US07384950B2

Reaction notes

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