Hydrochloric Acid → 4'-{[4-(4-Hydroxycyclohexyl)-5-oxo-7-propyl-2-(trifluoromethyl)-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

HRID 1688745Notes

Reaction equation

HRID 1688745 reaction equation
O1[C:5]2([CH2:10][CH2:9][CH:8]([N:11]3[C:16](=[O:17])[C:15]([CH2:18][C:19]4[CH:24]=[CH:23][C:22]([C:25]5[C:26]([C:31]#[N:32])=[CH:27][CH:28]=[CH:29][CH:30]=5)=[CH:21][CH:20]=4)=[C:14]([CH2:33][CH2:34][CH3:35])[N:13]4[N:36]=[C:37]([C:39]([F:42])([F:41])[F:40])[N:38]=[C:12]34)[CH2:7][CH2:6]2)[O:4]CC1.Cl.[OH-].[Na+]>O1CCCC1>[OH:4][CH:5]1[CH2:10][CH2:9][CH:8]([N:11]2[C:16](=[O:17])[C:15]([CH2:18][C:19]3[CH:20]=[CH:21][C:22]([C:25]4[C:26]([C:31]#[N:32])=[CH:27][CH:28]=[CH:29][CH:30]=4)=[CH:23][CH:24]=3)=[C:14]([CH2:33][CH2:34][CH3:35])[N:13]3[N:36]=[C:37]([C:39]([F:41])([F:42])[F:40])[N:38]=[C:12]23)[CH2:7][CH2:6]1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 670096644'-{[4-(1,4-Dioxaspiro[4.5]dec-8-yl)-5-oxo-7-propyl-2-(trifluoromethyl)-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

Product 1

HCID 670101114'-{[4-(4-Hydroxycyclohexyl)-5-oxo-7-propyl-2-(trifluoromethyl)-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of 4′-{[4-(1,4-dioxaspiro[4.5]dec-8-yl)-5-oxo-7-propyl-2-(trifluoromethyl)-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (7.69 g) in tetrahydrofuran (25 mL) was added 6N hydrochloric acid (25 mL), and the mixture was stirred at 90° C. for 20 hr. The reaction mixture was cooled to room temperature, neutralized with 2 N aqueous sodium hydroxide solution, and extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. To a solution of the obtained residue in ethanol (20 mL)-tetrahydrofuran (10 mL) was added sodium borohydride (631 mg) under ice-cooling, and the mixture was stirred at room temperature for 8 hr. The reaction mixture was concentrated under reduced pressure, and the residue was partitioned between ethyl acetate and water. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography [eluent: hexane/ethyl acetate=80/30→50/50 (volume ratio)] to give the title compound as a colorless amorphous compound (4.27 g, 60%).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. additionTo a solution of the obtained residue in ethanol (20 mL)-tetrahydrofuran (10 mL) was added sodium borohydride (631 mg) under ice-
  7. temperaturecooling
  8. stirringthe mixture was stirred at room temperature for 8 hr
  9. concentrationThe reaction mixture was concentrated under reduced pressure
  10. customthe residue was partitioned between ethyl acetate and water
  11. washThe organic layer was washed with saturated brine
  12. dry with materialdried over anhydrous magnesium sulfate
  13. customThe solvent was evaporated under reduced pressure
  14. customthe residue was purified by silica gel chromatography [eluent: hexane/ethyl acetate=80/30→50/50 (volume ratio)]

Sources & evidence

ORD record
ord-48273f70715c4a099f0d4db2d3115e2f
Source dataset
uspto-grants-2012_04
Patent number
US08148383B2

Reaction notes

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