3-fluorobenzoic acid N'-{(E)-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]acryloyl}hydrazide → 2-(3-fluorophenyl)-5-{(E)-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]vinyl}-[1,3,4]oxadiazole

HRID 599554Notes

Reaction equation

HRID 599554 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5](/[CH:15]=[CH:16]/[C:17]([NH:19][NH:20][C:21](=O)[C:22]2[CH:27]=[CH:26][CH:25]=[C:24]([F:28])[CH:23]=2)=[O:18])[CH:6]=[CH:7][C:8]=1[N:9]1[CH:13]=[C:12]([CH3:14])[N:11]=[CH:10]1>P(Cl)(Cl)(Cl)=O>[F:28][C:24]1[CH:23]=[C:22]([C:21]2[O:18][C:17](/[CH:16]=[CH:15]/[C:5]3[CH:6]=[CH:7][C:8]([N:9]4[CH:13]=[C:12]([CH3:14])[N:11]=[CH:10]4)=[C:3]([O:2][CH3:1])[CH:4]=3)=[N:19][N:20]=2)[CH:27]=[CH:26][CH:25]=1

Participants

3

Reactant 1

HCID 670673443-fluorobenzoic acid N'-{(E)-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]acryloyl}hydrazide

Product 1

HCID 670672252-(3-fluorophenyl)-5-{(E)-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]vinyl}-[1,3,4]oxadiazoleYield 79.2%

Reagents, catalysts & solvents 1

HCID 24813Phosphorus oxychlorideSolvent

Procedure

A solution of 3-fluorobenzoic acid N′-{(E)-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]acryloyl}hydrazide (86 mg) in phosphorus oxychloride (2 mL) was stirred at 120° C. for one hour. The reaction solution was left to cool to room temperature and concentrated under reduced pressure. Methylene chloride and a 1 N sodium hydroxide solution were added to the residue, and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (carrier: Chromatorex™ NH; elution solvent: heptane:ethyl acetate=1:1→ethyl acetate) to obtain 65 mg of the title compound. The property values of the compound are as follows.

Workup

  1. waitThe reaction solution was left
  2. concentrationconcentrated under reduced pressure
  3. additionMethylene chloride and a 1 N sodium hydroxide solution were added to the residue
  4. customthe organic layer was separated
  5. dry with materialThe resulting organic layer was dried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (carrier: Chromatorex™ NH; elution solvent: heptane:ethyl acetate=1:1→ethyl acetate)

Sources & evidence

ORD record
ord-d9a3122016824dfd914f9996cfb9286d
Source dataset
uspto-grants-2011_03
Patent number
US07897632B2

Reaction notes

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