Water → [1-(4-Chloro-phenyl)-3-methyl-2-oxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-yl]-(2,4-dimethoxy-benzyl)-carbamic acid tert-butyl ester

HRID 1749103Notes

Reaction equation

HRID 1749103 reaction equation
[C:1]([O:5][C:6](=[O:37])[N:7]([C:19]1[CH:20]=[CH:21][C:22]2[N:23]([C:30]3[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][CH:31]=3)[C:24](=[O:29])[NH:25][CH2:26][C:27]=2[N:28]=1)[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][C:10]=1[O:17][CH3:18])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].I[CH3:41].O>CN(C=O)C>[C:1]([O:5][C:6](=[O:37])[N:7]([C:19]1[CH:20]=[CH:21][C:22]2[N:23]([C:30]3[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][CH:31]=3)[C:24](=[O:29])[N:25]([CH3:41])[CH2:26][C:27]=2[N:28]=1)[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][C:10]=1[O:17][CH3:18])([CH3:4])([CH3:2])[CH3:3]

Participants

6

Reactant 4

HCID 962WaterHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 70981608[1-(4-Chloro-phenyl)-2-oxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-yl]-(2,4-dimethoxy-benzyl)-carbamic acid tert-butyl ester

Product 1

HCID 70980679[1-(4-Chloro-phenyl)-3-methyl-2-oxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-yl]-(2,4-dimethoxy-benzyl)-carbamic acid tert-butyl esterYield 39.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of [1-(4-chloro-phenyl)-2-oxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-yl]-(2,4-dimethoxy-benzyl)-carbamic acid tert-butyl ester (Example 21, low RF compound from Step 1) (120 mg, 0.23 mmol) in DMF (3 mL) was added NaH (60% dispersion in oil, 14 mg, 0.34 mmol, 1.5 equiv) and the reaction mixture was stirred for 1 h. Iodomethane (30 μL, 0.46 mmol, 2 equiv) was added and stirring was continued overnight. Water was added and the product was extracted with EtOAc. The organic phase was washed with brine, dried (MgSO4), filtered and the solvent evaporated. The crude material was purified by column chromatography (SiO2, eluted with petrol—EtOAc 0-100%) to afford [1-(4-chloro-phenyl)-3-methyl-2-oxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-yl]-(2,4-dimethoxy-benzyl)-carbamic acid tert-butyl ester (49 mg). MS: [M+H]+=539.

Workup

  1. stirringstirring
  2. waitwas continued overnight
  3. extractionthe product was extracted with EtOAc
  4. washThe organic phase was washed with brine
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. customthe solvent evaporated
  8. customThe crude material was purified by column chromatography (SiO2, eluted with petrol—EtOAc 0-100%)

Sources & evidence

ORD record
ord-42bb57cdecdf413686aca8db08d7fb05
Source dataset
uspto-grants-2015_10
Patent number
US09155743B2

Reaction notes

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