Dimethylformamide → [7-Benzyl-1-(2-phenylethyl)-2,6-dioxo-1,2,6,7-tetrahydropurin-3-yl]acetic acid ethyl ester

HRID 1792072Notes

Reaction equation

[CH2:1]([O:3][C:4](=[O:24])[CH2:5][N:6]1[C:14]2[N:13]=[CH:12][N:11]([CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C:10]=2[C:9](=[O:22])[NH:8][C:7]1=[O:23])[CH3:2].C(=O)([O-])[O-].[K+].[K+].Br[CH2:32][CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1.CN(C)C=O>C(OCC)(=O)C.O>[CH2:1]([O:3][C:4](=[O:24])[CH2:5][N:6]1[C:14]2[N:13]=[CH:12][N:11]([CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C:10]=2[C:9](=[O:22])[N:8]([CH2:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[C:7]1=[O:23])[CH3:2]

Participants

Conditions

Temperature: 50 °C

Procedure

A mixture of (7-benzyl-2,6-dioxo-1,2,6,7-tetrahydropurin-3-yl)acetic acid ethyl ester (300 mg), anhydrous potassium carbonate (250 mg), 2-bromoethylbenzene (0.25 ml), and N,N-dimethylformamide (5 ml) was stirred with heating in an oil bath of 50° C. for 2 hours. The reaction mixture was diluted with ethyl acetate and water, and extracted with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography using 10–20% (20% 2-propanol/ethyl acetate)/hexane to give 366 mg of the title compound.

Workup

extractionextracted with ethyl acetate
washThe organic layer was washed with water and saturated brine
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure
customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-2c0009f640dc46d3afe7c01413d3ef10
Source dataset: uspto-grants-2006_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07074798B2

Reaction notes

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