Water → 2-Chloro-5-(cyclopentyloxy)pyrimidine

HRID 250047

Reaction equation

HRID 250047 reaction equation
[Cl:1][C:2]1[N:7]=[CH:6][C:5]([OH:8])=[CH:4][N:3]=1.Cl[CH:10]1[CH2:14][CH2:13][CH2:12][CH2:11]1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[Cl:1][C:2]1[N:7]=[CH:6][C:5]([O:8][CH:10]2[CH2:14][CH2:13][CH2:12][CH2:11]2)=[CH:4][N:3]=1

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 70252ChlorocyclopentaneHCID 145957002-Chloro-5-pyrimidinol

Product 1

HCID 574765592-Chloro-5-(cyclopentyloxy)pyrimidineYield 54.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
65 °C

Procedure

A mixture of 2-chloropyrimidin-5-ol (1 g, 7.66 mmol), chlorocyclopentane (2.39 mL, 22.98 mmol) and potassium carbonate (3.18 g, 22.98 mmol) in N,N-dimethylformamide were heated at 65° C. for 16 h at ambient temperature. Water was added and the mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, dried over sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (0-25% ethyl acetate/hexanes) to afford 2-chloro-5-(cyclopentyloxy)pyrimidine (831 mg, 4.18 mmol, 54.6% yield) as a white solid. MS (LC/MS) R.T.=2.32; [M+H]+=199.23.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water and brine
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by column chromatography (0-25% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-d196ad7835c64c4ea90be1cb5b70642f
Source dataset
uspto-grants-2011_01
Patent number
US07863291B2

Linked notes

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