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

HRID 2048706Notes

Reaction equation

HRID 2048706 reaction equation
[OH:1][CH:2]([CH3:37])[CH2:3][N:4]1[C:9](=[O:10])[C:8]([CH2:11][C:12]2[CH:17]=[CH:16][C:15]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[C:24]3[NH:28][C:27](=[O:29])[O:26][N:25]=3)=[CH:14][CH:13]=2)=[C:7]([CH2:30][CH2:31][CH3:32])[N:6]2[N:33]=[C:34]([CH3:36])[N:35]=[C:5]12.CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O.C(=O)([O-])O.[Na+].O.O.O.O.O.S([O-])([O-])(=O)=S.[Na+].[Na+]>C(OCC)(=O)C.C(#N)C>[CH3:36][C:34]1[N:35]=[C:5]2[N:4]([CH2:3][C:2](=[O:1])[CH3:37])[C:9](=[O:10])[C:8]([CH2:11][C:12]3[CH:13]=[CH:14][C:15]([C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=4[C:24]4[NH:28][C:27](=[O:29])[O:26][N:25]=4)=[CH:16][CH:17]=3)=[C:7]([CH2:30][CH2:31][CH3:32])[N:6]2[N:33]=1

Participants

7

Reactant 4

HCID 61475Sodium Thiosulfate PentahydrateHCID 159087TriacetoxyperiodinaneHCID 516892Sodium BicarbonateHCID 1360638984-(2-hydroxypropyl)-2-methyl-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 1360636782-methyl-6-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-4-(2-oxopropyl)-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-oneYield 62.2%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 4-(2-hydroxypropyl)-2-methyl-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 (0.42 g), Dess-Martin reagent (0.71 g) and acetonitrile (10 mL) was stirred at room temperature for 3 hr. Saturated aqueous sodium hydrogen carbonate and sodium thiosulfate-pentahydrate were added to the reaction mixture, and the mixture was stirred at room temperature for 2 hr. The reaction mixture was diluted with ethyl acetate, washed with water and then 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 (0.26 g, 62%).

Workup

  1. stirringthe mixture was stirred at room temperature for 2 hr
  2. washwashed with water
  3. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-94dff873fa204cda94104e343337b72d
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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