Cesium carbonate → 7-(4-chlorobenzyl)-1-(2-hydroxyethyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione

HRID 2200642Notes

Reaction equation

HRID 2200642 reaction equation
[Cl:1][C:2]1[CH:31]=[CH:30][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[NH:13][C:12](=[O:17])[N:11]([CH3:18])[C:10]=3[N:9]=[C:8]2[O:19][C:20]2[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:28])[F:27])[CH:21]=2)=[CH:4][CH:3]=1.Br[CH2:33][CH2:34][OH:35].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[N:13]([CH2:33][CH2:34][OH:35])[C:12](=[O:17])[N:11]([CH3:18])[C:10]=3[N:9]=[C:8]2[O:19][C:20]2[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:27])[F:28])[CH:21]=2)=[CH:30][CH:31]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 108982-BromoethanolHCID 904031287-(4-chlorobenzyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione

Product 1

HCID 904027327-(4-chlorobenzyl)-1-(2-hydroxyethyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dioneYield 28.9%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 7-(4-chlorobenzyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione (60 mg, 0.133 mmol, example 1) in DMF (1 mL) was added 2-bromoethanol (16.5 mg, 0.133 mmol) and cesium carbonate (86.6 mg, 0.266 mmol). The resulting mixture was subjected to microwave irradiation at 120 for 20 min in a sealed tube. The mixture was diluted with ethyl acetate (5 mL) and extracted with saturated aqueous ammonium chloride solution. The organic phase was dried and concentrated to give crude product which was purified preparative HPLC to give 7-(4-chlorobenzyl)-1-(2-hydroxyethyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione (19 mg, 28.8% yield) as white solid.

Workup

  1. customirradiation at 120 for 20 min in a sealed tube
  2. extractionextracted with saturated aqueous ammonium chloride solution
  3. customThe organic phase was dried
  4. concentrationconcentrated
  5. customto give crude product which
  6. customwas purified preparative HPLC

Sources & evidence

ORD record
ord-84127544eb2843198a56e7725f9ee878
Source dataset
uspto-grants-2016_06
Patent number
US09359359B2

Reaction notes

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