Potassium Carbonate → 7-benzyl-8-(3-(trifluoromethoxy)phenoxy)-3-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione

HRID 2200589Notes

Reaction equation

[CH2:1]([N:8]1[C:16]2[C:15](=[O:17])[N:14](CCCOC3CCCCO3)[C:13](=[O:28])[N:12]([CH2:29][O:30][CH2:31][CH2:32][Si:33]([CH3:36])([CH3:35])[CH3:34])[C:11]=2[N:10]=[C:9]1Cl)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[F:38][C:39]([F:49])([F:48])[O:40][C:41]1[CH:42]=[C:43]([OH:47])[CH:44]=[CH:45][CH:46]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[CH2:1]([N:8]1[C:16]2[C:15](=[O:17])[NH:14][C:13](=[O:28])[N:12]([CH2:29][O:30][CH2:31][CH2:32][Si:33]([CH3:34])([CH3:36])[CH3:35])[C:11]=2[N:10]=[C:9]1[O:47][C:43]1[CH:44]=[CH:45][CH:46]=[C:41]([O:40][C:39]([F:38])([F:48])[F:49])[CH:42]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of 7-benzyl-8-chloro-3-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione (500 mg, 1.232 mmol, product of intermediate 18, step 4) in DMF (3 mL) was added 3-(trifluoromethoxy)phenol (280 mg, 1.55 mmol), followed by potassium carbonate (400 mg, 2.90 mmol). The mixture was stirred at 80° C. overnight. The reaction was cooled and partitioned between ethyl acetate and water. The organic phase was washed with brine, dried over sodium sulfate, and concentrated to give 7-benzyl-8-(3-(trifluoromethoxy)phenoxy)-3-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione (0.59 g, 87.3% yield) as brown oil. LCMS retention time 2.157 min; LCMS MH+ 549.

Workup

temperatureThe reaction was cooled
custompartitioned between ethyl acetate and water
washThe organic phase was washed with brine
dry with materialdried over sodium sulfate
concentrationconcentrated

Sources & evidence

ORD record: ord-482ea36d6d454fc697fe8e0e1f1b65c6
Source dataset: uspto-grants-2016_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09359359B2

Reaction notes

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