Water → 2-{(3,5-Bis-trifluoromethyl-benzyl)-[2-(butyl-ethyl-amino)-5-trifluoromethyl-benzyl]-amino}-pyrimidin-5-ol

HRID 603995Notes

Reaction equation

HRID 603995 reaction equation
[F:1][C:2]([F:41])([F:40])[C:3]1[CH:4]=[C:5]([CH:33]=[C:34]([C:36]([F:39])([F:38])[F:37])[CH:35]=1)[CH2:6][N:7]([C:26]1[N:31]=[CH:30][C:29](Br)=[CH:28][N:27]=1)[CH2:8][C:9]1[CH:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[CH:12]=[CH:11][C:10]=1[N:19]([CH2:22][CH2:23][CH2:24][CH3:25])[CH2:20][CH3:21].C([O-])(=[O:44])C.[K+].B1(B2OC(C)(C)C(C)(C)O2)OC(C)(C)C(C)(C)O1.O>CS(C)=O.C(OCC)(=O)C>[F:1][C:2]([F:41])([F:40])[C:3]1[CH:4]=[C:5]([CH:33]=[C:34]([C:36]([F:39])([F:38])[F:37])[CH:35]=1)[CH2:6][N:7]([CH2:8][C:9]1[CH:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[CH:12]=[CH:11][C:10]=1[N:19]([CH2:22][CH2:23][CH2:24][CH3:25])[CH2:20][CH3:21])[C:26]1[N:31]=[CH:30][C:29]([OH:44])=[CH:28][N:27]=1

Participants

7

Reactant 4

HCID 962WaterHCID 517044Potassium AcetateHCID 2733548Bis(pinacolato)diboraneHCID 86626754(3,5-Bis-trifluoromethyl-benzyl)-(5-bromo-pyrimidin-2-yl)-[2-(butyl-ethyl-amino)-5-trifluoromethyl-benzyl]-amine

Product 1

HCID 866267552-{(3,5-Bis-trifluoromethyl-benzyl)-[2-(butyl-ethyl-amino)-5-trifluoromethyl-benzyl]-amino}-pyrimidin-5-olYield 9.7%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

(3,5-Bis-trifluoromethyl-benzyl)-(5-bromopyrimidin-2-yl)-[2-(butyl-ethyl-amino)-5-trifluoromethyl-benzyl]-amine (3.0 g), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium methylene chloride complex (112 mg), potassium acetate (1.34 g) and bis(pinacolato)diboron (1.74 g) are dissolved in dimethylsulfoxide (20 ml) and the mixture is heated to 80° C. under nitrogen atmosphere and stirred for 1 hour. The reaction solution is cooled to room temperature, and thereto are added water and ethyl acetate, and the mixture is separated, and the organic layer is washed with a saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The resulting residue is dissolved in tetrahydrofuran (70 ml) and thereto is added dropwise a 30% aqueous hydrogen peroxide solution (15 ml) under ice-cooling. One hour thereafter, thereto is added a saturated aqueous sodium thiosulfate solution under ice-cooling to consume the excess hydrogen peroxide, and thereto are added water and ethyl acetate, and the mixture is separated, and the organic layer is washed with a saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (hexane:ethyl acetate=19:1→3:1) to give 2-{(3,5-bis-trifluoromethyl-benzyl)-[2-(butyl-ethyl-amino)-5-trifluoromethyl-benzyl]-amino}-pyrimidin-5-ol (263 mg). MS (m/z): 595 [M+H]+

Workup

  1. temperatureThe reaction solution is cooled to room temperature
  2. customthe mixture is separated
  3. washthe organic layer is washed with a saturated brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. dissolutionThe resulting residue is dissolved in tetrahydrofuran (70 ml)
  7. additionis added dropwise a 30% aqueous hydrogen peroxide solution (15 ml) under ice-
  8. temperaturecooling
  9. additionOne hour thereafter, thereto is added a saturated aqueous sodium thiosulfate solution under ice-
  10. temperaturecooling
  11. customto consume the excess hydrogen peroxide
  12. additionare added water and ethyl acetate
  13. customthe mixture is separated
  14. washthe organic layer is washed with a saturated brine
  15. dry with materialdried over magnesium sulfate
  16. concentrationconcentrated under reduced pressure
  17. customThe resulting residue is purified by silica gel column chromatography (hexane:ethyl acetate=19:1→3:1)

Sources & evidence

ORD record
ord-bc0adfa644d34bfbb813331344c64911
Source dataset
uspto-grants-2011_03
Patent number
US07906517B2

Reaction notes

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