Potassium Carbonate → 3-[4-(4-methoxy-benzyloxy)-2-methyl-6-oxo-6H-pyrimidin-1-yl]-4-methyl-benzoic acid methyl ester

HRID 2172587Notes

Reaction equation

[CH3:1][O:2][C:3](=[O:20])[C:4]1[CH:9]=[CH:8][C:7]([CH3:10])=[C:6]([N:11]2[C:16](=[O:17])[CH:15]=[C:14]([OH:18])[N:13]=[C:12]2[CH3:19])[CH:5]=1.[CH3:21][O:22][C:23]1[CH:30]=[CH:29][C:26]([CH2:27]Cl)=[CH:25][CH:24]=1.C(=O)([O-])[O-].[K+].[K+].C1OCCOCCOCCOCCOCCOC1>CN(C)C=O.C(OCC)(=O)C.CCCCCCC>[CH3:1][O:2][C:3](=[O:20])[C:4]1[CH:9]=[CH:8][C:7]([CH3:10])=[C:6]([N:11]2[C:16](=[O:17])[CH:15]=[C:14]([O:18][CH2:27][C:26]3[CH:29]=[CH:30][C:23]([O:22][CH3:21])=[CH:24][CH:25]=3)[N:13]=[C:12]2[CH3:19])[CH:5]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 3-(4-hydroxy-2-methyl-6-oxo-6H-pyrimidin-1-yl)-4-methyl-benzoic acid methyl ester from Step D (800 mg, 66% purity, 1.93 mmol) in N,N-dimethylformamide (3 mL) was added 4-methoxybenzyl chloride (0.26 mL, 1.93 mmol), potassium carbonate (666 mg, 4.82 mmol) and 18-crown-6 (80 mg). The slurry was heated at 60° C. for two hours. The solution was allowed to cool to ambient temperature and was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. The slurry was filtered and concentrated to a brown oil. Normal phase chromatography (ethyl acetate/heptane) provided the alkylated product as a white solid (170 mg, 22% yield). MS (M+H): 395

Workup

temperatureto cool to ambient temperature
customwas partitioned between ethyl acetate and water
washThe organic layer was washed with water and brine
dry with materialdried over magnesium sulfate
filtrationThe slurry was filtered
concentrationconcentrated to a brown oil

Sources & evidence

ORD record: ord-b8bb6c2c86b14ecf878f5e179be5d513
Source dataset: uspto-grants-2015_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09056110B2

Reaction notes

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