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

HRID 2063091Notes

Reaction equation

HRID 2063091 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.ClC1C=CC=C(C(OO)=[O:48])C=1>C(#N)C.C(OCC)(=O)C>[O:33]=[C:31]1[O:30][N:29]=[C:28]([C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=2[C:19]2[CH:18]=[CH:17][C:16]([CH2:15][C:12]3[C:13](=[O:14])[N:8]([CH:5]4[CH2:6][CH2:7][C:2](=[O:48])[O:1][CH2:3][CH2:4]4)[C:9]4[N:10]([N:37]=[CH:38][N:39]=4)[C:11]=3[CH2:34][CH2:35][CH3:36])=[CH:21][CH:20]=2)[NH:32]1

Participants

5

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 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 1360638776-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-4-(7-oxooxepan-4-yl)-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-oneYield 75.6%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution 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 (262 mg) in acetonitrile (10 mL) was added m-chloroperbenzoic acid (129 mg), and the mixture was stirred at room temperature for 15 hr. The reaction mixture was diluted with ethyl acetate, washed with 5% aqueous sodium thiosulfate solution 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 chromatography [eluent: hexane/ethyl acetate=40/60→0/100 (volume ratio)] and crystallized from a mixture of ethyl acetate and diisopropyl ether to give the title compound as colorless crystals (204 mg, 75%).

Workup

  1. washwashed with 5% aqueous sodium thiosulfate solution
  2. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. customthe residue was purified by silica gel chromatography [eluent: hexane/ethyl acetate=40/60→0/100 (volume ratio)]
  5. customcrystallized from a mixture of ethyl acetate and diisopropyl ether

Sources & evidence

ORD record
ord-ef12a7595d5b437a9b0a5929b29fa3e1
Source dataset
uspto-grants-2012_10
Patent number
US08283353B2

Reaction notes

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