Tetrahydrofuran → 2-(3-[3-Methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-[3-(trifluoromethyl)phenoxy]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridin-8-yl}propan-2-ol

HRID 1398189Notes

Reaction equation

HRID 1398189 reaction equation
[CH3:1][Mg]Br.[CH3:4][O:5][C:6]1[CH:7]=[C:8]([C:18]2[N:22]3[CH2:23][CH2:24][CH2:25][C:26]([O:32][C:33]4[CH:38]=[CH:37][CH:36]=[C:35]([C:39]([F:42])([F:41])[F:40])[CH:34]=4)(C(OCC)=O)[C:21]3=[N:20][N:19]=2)[CH:9]=[CH:10][C:11]=1[C:12]1[O:16][C:15]([CH3:17])=N[CH:13]=1.[Cl-].[NH4+:44].[CH2:45]1[CH2:49][O:48]CC1>>[CH3:4][O:5][C:6]1[CH:7]=[C:8]([C:18]2[N:22]3[CH2:23][CH2:24][CH2:25][C:26]([C:49]([OH:48])([CH3:45])[CH3:1])([O:32][C:33]4[CH:38]=[CH:37][CH:36]=[C:35]([C:39]([F:40])([F:42])[F:41])[CH:34]=4)[C:21]3=[N:20][N:19]=2)[CH:9]=[CH:10][C:11]=1[C:12]1[O:16][C:15]([CH3:17])=[N:44][CH:13]=1

Participants

5

Reactant 4

HCID 8028TetrahydrofuranHCID 25517Ammonium ChlorideHCID 66608183Ethyl 3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-[3-(trifluoromethyl)phenoxy]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylateHCID 178418573HCID 178418573, compound

Product 1

HCID 569295452-(3-[3-Methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-[3-(trifluoromethyl)phenoxy]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridin-8-yl}propan-2-ol

Procedure

Methylmagnesium bromide (1 M THF solution, 5.81 mL) was added to a mixture of ethyl 3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-[3-(trifluoromethyl)phenoxy]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate (630 mg) in THF (7 mL) under ice-cooling, and the mixture was stirred for 1 hr. Saturated aqueous ammonium chloride solution was added, and the mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane) to give the title compound (270 mg).

Workup

  1. temperaturecooling
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane)

Sources & evidence

ORD record
ord-bbbe9053a72b4f0bb83a0a16581e9a69
Source dataset
uspto-grants-2014_12
Patent number
US08901309B2

Reaction notes

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