Potassium Carbonate → 2-[(2-Cyclopropylethyl)oxy]-8-(methyloxy)-9-(tetrahydro-2H-pyran-4-ylmethyl)-9H-Purin-6-amine

HRID 1011016Notes

Reaction equation

HRID 1011016 reaction equation
FC(F)(F)C(O)=O.[CH:8]1([CH2:11][CH2:12][O:13][C:14]2[N:22]=[C:21]3[C:17]([N:18]=[C:19]([O:23][CH3:24])[NH:20]3)=[C:16]([NH2:25])[N:15]=2)[CH2:10][CH2:9]1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:33][CH:34]1[CH2:39][CH2:38][O:37][CH2:36][CH2:35]1>CN(C=O)C>[CH:8]1([CH2:11][CH2:12][O:13][C:14]2[N:22]=[C:21]3[C:17]([N:18]=[C:19]([O:23][CH3:24])[N:20]3[CH2:33][CH:34]3[CH2:39][CH2:38][O:37][CH2:36][CH2:35]3)=[C:16]([NH2:25])[N:15]=2)[CH2:10][CH2:9]1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 27732864-(Bromomethyl)oxaneHCID 178493994HCID 178493994, compound

Product 1

HCID 576997352-[(2-Cyclopropylethyl)oxy]-8-(methyloxy)-9-(tetrahydro-2H-pyran-4-ylmethyl)-9H-Purin-6-amineYield 44.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Conditions

Temperature
50 °C

Procedure

2-[(2-Cyclopropylethyl)oxy]-8-methoxy-9H-purin-6-amine trifluoroacetic acid salt (0.30 g) was heated with potassium carbonate (anhydrous, 0.46 g) in anhydrous DMF (5 mL) at 60° C. for 1 hour. The reaction was cooled to room temperature before 4-(bromomethyl) tetrahydro-2H-pyran (0.16 g) in anhydrous DMF (1 mL) was added. The reaction mixture was then heated to 50° C. overnight. The reaction was quenched into water (50 mL) and extracted with ethyl acetate (50 mL, 3 times). The organic layer was combined and washed with brine (50 mL). The organic layer was separated and dried by passing through a hydrophobic frit before being evaporated under reduced pressure to give oil). This material was purified by C18 reverse phase chromatography using water (containing 0.1% formic acid)-acetonitrile (containing 0.05% formic acid) as eluent (20-60%). This material was purified by reverse phase chromatography (20-60% acetonitrile: water). This gave the title compound as a white solid (0.1279 g).

Workup

  1. additionwas added
  2. customThe reaction was quenched into water (50 mL)
  3. extractionextracted with ethyl acetate (50 mL, 3 times)
  4. washwashed with brine (50 mL)
  5. customThe organic layer was separated
  6. customdried
  7. custombefore being evaporated under reduced pressure
  8. customto give oil)
  9. customThis material was purified by C18 reverse phase chromatography
  10. customThis material was purified by reverse phase chromatography (20-60% acetonitrile: water)

Sources & evidence

ORD record
ord-6670d8ceb68040b08bc4b3706fe2ee3b
Source dataset
uspto-grants-2011_07
Patent number
US07977344B2

Reaction notes

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