Methyl iodide → HCID 53474701, compound

HRID 2382925Notes

Reaction equation

[NH2:1][C:2]1[C:7]([F:8])=[CH:6][N:5]([S:9]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)(=[O:11])=[O:10])[C:4](=[O:18])[N:3]=1.[C:19](=O)([O-])[O-].[K+].[K+].IC>CN(C)C=O>[C:12]1([S:9]([N:5]2[CH:6]=[C:7]([F:8])[C:2](=[NH:1])[N:3]([CH3:19])[C:4]2=[O:18])(=[O:10])=[O:11])[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Participants

Conditions

Temperature: 60 °C

Procedure

4-Amino-1-benzenesulfonyl-5-fluoro-1H-pyrimidine-2-one (200 mg, 0.74 mmol) was stirred at room temperature in dimethyl formamide (3 mL) together with anhydrous potassium carbonate (210 mg, 1.5 mmol). Iodomethane (210 mg, 1.5 mmol) was added and the mixture was heated at 60° C. for 3 hours. After cooling to room temperature, the mixture was partitioned between ethyl acetate (EtOAc) and water. The organic phase was dried over magnesium sulfate, filtered, and evaporated. The crude product was purified by chromatography on silica gel (gradient, 20 to 80% EtOAc in petroleum ether) to isolate 1-benzenesulfonyl-5-fluoro-4-imino-3-methyl-3,4-dihydro-1H-pyrimidin-2-one (106 mg, 50%) as a white solid: mp 144° C.; 1H NMR (600 MHz, DMSO-d6) δ 8.52 (s, 1H), 8.03-8.00 (m, 2H), 7.97 (d, J=5.9 Hz, 1H), 7.80-7.76 (m, 1H), 7.67-7.63 (m, 2H), 3.09 (s, 3H); ESIMS m/z 284 ([M+H]+).

Workup

temperatureAfter cooling to room temperature
customthe mixture was partitioned between ethyl acetate (EtOAc) and water
dry with materialThe organic phase was dried over magnesium sulfate
filtrationfiltered
customevaporated
customThe crude product was purified by chromatography on silica gel (gradient, 20 to 80% EtOAc in petroleum ether)

Sources & evidence

ORD record: ord-47e0a0d27b5548e791fa5cd1b2c98c7c
Source dataset: uspto-grants-2012_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08263603B2

Reaction notes

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