Ethyl Acetate → 3-{2-[2-(2-Fluoro-4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-ylmethoxy}-6-(4-[1,2,3]triazol-1-yl-butyl)-pyridazine

HRID 349240Notes

Reaction equation

HRID 349240 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:5]=[CH:4][C:3]=1[CH:12]=[CH:13][C:14]1[O:15][CH:16]=[C:17]([CH2:19][OH:20])[N:18]=1.CC(C)([O-])C.[Na+].Cl[C:28]1[N:29]=[N:30][C:31]([CH2:34][CH2:35][CH2:36][CH2:37][N:38]2[CH:42]=[CH:41][N:40]=[N:39]2)=[CH:32][CH:33]=1.C(OCC)(=O)C>O1CCCC1>[F:1][C:2]1[CH:7]=[C:6]([C:8]([F:9])([F:10])[F:11])[CH:5]=[CH:4][C:3]=1[CH:12]=[CH:13][C:14]1[O:15][CH:16]=[C:17]([CH2:19][O:20][C:28]2[N:29]=[N:30][C:31]([CH2:34][CH2:35][CH2:36][CH2:37][N:38]3[CH:42]=[CH:41][N:40]=[N:39]3)=[CH:32][CH:33]=2)[N:18]=1

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 23676156Sodium t-butoxideHCID 68939515{2-[2-(2-Fluoro-4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-yl}-methanolHCID 860740683-Chloro-6-(4-[1,2,3]triazol-1-yl-butyl)-pyridazine

Product 1

HCID 694864393-{2-[2-(2-Fluoro-4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-ylmethoxy}-6-(4-[1,2,3]triazol-1-yl-butyl)-pyridazine

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

{2-[2-(2-Fluoro-4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-yl}-methanol (0.114 g, 0.40 mmol) is dissolved in anhydrous tetrahydrofuran (THF) (3 ml) followed by the addition of sodium tert-butoxide (NaOtBu) (0.043 g, 0.43 mmol). After stirring for 15 min at r.t. 3-chloro-6-(4-[1,2,3]triazol-1-yl-butyl)-pyridazine (0.075 g, 0.32 mmol) is added slowly and stirred for further 4 h at 60° C. Ethyl acetate (20 ml) is added; the mixture is washed with saturated ammonium chloride (NH4Cl), dried over MgSO4 and concentrated in vacuo. After flash column chromatography (ethyl acetate/methanol 98:2) 3-{2-[2-(2-fluoro-4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-ylmethoxy}-6-(4-[1,2,3]triazol-1-yl-butyl)-pyridazine is obtained as a colorless solid. Yield 0.115 g (75%).

Workup

  1. stirringstirred for further 4 h at 60° C
  2. washthe mixture is washed with saturated ammonium chloride (NH4Cl)
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-b4ac023fd7934759afa79c9cfdc12eac
Source dataset
uspto-grants-2007_02
Patent number
US07179812B2

Reaction notes

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