Sodium borohydride → 4-(4-hydroxycyclohexyl)-6-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one

HRID 2048752Notes

Reaction equation

HRID 2048752 reaction equation
[O:1]=[C:2]1[CH2:7][CH2:6][CH:5]([N:8]2[C:13](=[O:14])[C:12]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=4[C:28]4[NH:32][C:31](=[O:33])[O:30][N:29]=4)=[CH:18][CH:17]=3)=[C:11]([CH2:34][CH2:35][CH3:36])[N:10]3[N:37]=[CH:38][N:39]=[C:9]23)[CH2:4][CH2:3]1.[BH4-].[Na+]>CO>[OH:1][CH:2]1[CH2:7][CH2:6][CH:5]([N:8]2[C:13](=[O:14])[C:12]([CH2:15][C:16]3[CH:17]=[CH:18][C:19]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=4[C:28]4[NH:32][C:31](=[O:33])[O:30][N:29]=4)=[CH:20][CH:21]=3)=[C:11]([CH2:34][CH2:35][CH3:36])[N:10]3[N:37]=[CH:38][N:39]=[C:9]23)[CH2:4][CH2:3]1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 1360639444-(4-oxocyclohexyl)-6-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one

Product 1

HCID 1360638764-(4-hydroxycyclohexyl)-6-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-oneYield 66%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution (10 mL) of 4-(4-oxocyclohexyl)-6-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one (0.14 g) in methanol was added sodium borohydride (0.011 g), and the mixture was stirred at room temperature for 1 hr. After evaporation of the solvent under reduced pressure, the residue was extracted with water and ethyl acetate. The obtained ethyl acetate 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 column chromatography to give the title compound as a colorless amorphous solid (0.09 g, 66%).

Workup

  1. customAfter evaporation of the solvent under reduced pressure
  2. extractionthe residue was extracted with water and ethyl acetate
  3. washThe obtained ethyl acetate layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-40aaf2eecf754411947deae8b6ab450e
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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