Reaction #7171

ord-ca4213a13adb45e8b1ae784052865be6

Solvents

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    Temperaturethe mixture is heated
  2. 2
    Temperatureunder reflux for 18 hours
  3. 3
    Washthe mixture is washed with water
  4. 4
    DryingThe organic layer is dried over sodium sulfate
  5. 5
    Otherthe solvent is evaporated under reduced pressure
  6. 6
    OtherThe residue is purified by silica gel column chromatography (eluent: gradient from 0% to 20% chloroform/methanol)

Procedure

Intermediate 5 (200 mg), 2-aminoethanol (122 mg) and triethylamine (45 mg) are dissolved in acetonitrile (5 ml), and the mixture is heated under reflux for 18 hours. To the reaction solution is added chloroform, and the mixture is washed with water. The organic layer is dried over sodium sulfate, and the solvent is evaporated under reduced pressure. The residue is purified by silica gel column chromatography (eluent: gradient from 0% to 20% chloroform/methanol) to give the desired compound (170 mg).

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US07084176B2uspto-grants-2006_08