Sodium Chloride → 6-[3-(4-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-nicotinic acid methyl ester

HRID 1625919Notes

Reaction equation

HRID 1625919 reaction equation
[H-].[Na+].[F:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[C:14]([CH2:15][OH:16])=[C:13]([CH3:17])[O:12][N:11]=2)=[CH:6][CH:5]=1.Cl[C:19]1[CH:28]=[CH:27][C:22]([C:23]([O:25][CH3:26])=[O:24])=[CH:21][N:20]=1.[Cl-].[Na+]>C1COCC1>[CH3:26][O:25][C:23](=[O:24])[C:22]1[CH:27]=[CH:28][C:19]([O:16][CH2:15][C:14]2[C:10]([C:7]3[CH:6]=[CH:5][C:4]([F:3])=[CH:9][CH:8]=3)=[N:11][O:12][C:13]=2[CH3:17])=[N:20][CH:21]=1

Participants

6

Reactant 4

HCID 5234Sodium ChlorideHCID 24758Sodium hydrideHCID 254249Methyl 6-chloropyridine-3-carboxylateHCID 28473136(3-(4-Fluorophenyl)-5-methylisoxazol-4-yl)methanol

Product 1

HCID 684447416-[3-(4-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-nicotinic acid methyl esterYield 47%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Procedure

To a suspension of sodium hydride (55% dispersion in mineral oil, 852 mg, 20 mmol) in THF (27 mL) was added a solution of [3-(4-fluoro-phenyl)-5-methyl-isoxazol-4-yl]-methanol (103 mg, 0.55 mmol) (3.68 g, 18 mmol) in THF (54 mL) at 0° C. and the reaction mixture warmed to room temperature over 30 min. Then a solution of methyl 6-chloronicotinate (3.35 g, 20 mmol) in THF (1.5 mL) was added dropwise at 0° C. and the reaction mixture was stirred at room temperature overnight. The reaction mixture was then poured into aqueous sodium chloride (saturated) and the mixture was extracted with ethyl acetate. The combined organic layers were then washed with water and brine and then dried over sodium sulfate, filtered and evaporated. Purification by chromatography (SiO2, heptane:ethyl acetate=7:3) afforded the title compound (81 mg, 47%) which was obtained as a light yellow solid. MS: m/e=343.3 [M+H]+.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe combined organic layers were then washed with water and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. customPurification by chromatography (SiO2, heptane:ethyl acetate=7:3)

Sources & evidence

ORD record
ord-cd224177977b44d2b59c2f46f4c26c59
Source dataset
uspto-grants-2014_07
Patent number
US08785435B2

Reaction notes

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