Hydrochloric Acid → 2-(hydroxymethyl)-4-(1-methylpropyl)-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 2062911Notes

Reaction equation

HRID 2062911 reaction equation
C[O:2][CH2:3][C:4]1[N:39]=[C:7]2[N:8]([CH:35]([CH3:38])[CH2:36][CH3:37])[C:9](=[O:34])[C:10]([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]([CH2:12][CH2:13][CH3:14])[N:6]2[N:5]=1.B(Br)(Br)Br.C(=O)([O-])O.[Na+].Cl>ClCCl>[OH:2][CH2:3][C:4]1[N:39]=[C:7]2[N:8]([CH:35]([CH3:38])[CH2:36][CH3:37])[C:9](=[O:34])[C:10]([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]([CH2:12][CH2:13][CH3:14])[N:6]2[N:5]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 1360638592-(methoxymethyl)-4-(1-methylpropyl)-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 1360639512-(hydroxymethyl)-4-(1-methylpropyl)-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 29.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 2-(methoxymethyl)-4-(1-methylpropyl)-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 (0.07 g), boron tribromide (1.0 M dichloromethane solution, 0.4 mL) and dichloromethane (5 mL) was stirred at room temperature for 2 hr, saturated aqueous sodium hydrogen carbonate (10 mL) was added, and the mixture was further stirred for 1 hr. The reaction mixture was adjusted to pH 5 with 1 N hydrochloric acid, and the mixture was extracted with ethyl acetate. The 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 colorless crystals (0.02 g, 29%).

Workup

  1. stirringthe mixture was further stirred for 1 hr
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe 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-ab4d328b811a4959a575a2c626200357
Source dataset
uspto-grants-2012_10
Patent number
US08283353B2

Reaction notes

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