Water → (3-(3-Fluorophenyl)-5-methylisoxazol-4-yl)methanol

HRID 548850Notes

Reaction equation

HRID 548850 reaction equation
C([O:3][C:4]([C:6]1[C:7]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([F:18])[CH:13]=2)=[N:8][O:9][C:10]=1[CH3:11])=O)C.[H-].[Al+3].[Li+].[H-].[H-].[H-].O.[OH-].[Na+]>C1COCC1>[F:18][C:14]1[CH:13]=[C:12]([C:7]2[C:6]([CH2:4][OH:3])=[C:10]([CH3:11])[O:9][N:8]=2)[CH:17]=[CH:16][CH:15]=1

Participants

6

Reactant 4

HCID 962Water2×HCID 14798Sodium HydroxideHCID 21226445Aluminium lithium hydrideHCID 22309060Ethyl 3-(3-fluorophenyl)-5-methylisoxazole-4-carboxylate

Product 1

HCID 67157856(3-(3-Fluorophenyl)-5-methylisoxazol-4-yl)methanolYield 75.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-(3-fluoro-phenyl)-5-methyl-isoxazole-4-carboxylic acid ethyl ester (6.18 g, 25 mmol) in THF (320 mL) was added portionwise lithiumaluminiumhydride (528 mg, 14 mmol) at 0° C. and the reaction mixture was stirred at room temperature for 3 h. The mixture was then cooled to 0° C. and water (518 ␣L) added followed by sodium hydroxide (15% solution, 518 μL) and then again water (1.5 mL) and the mixture then stirred overnight at room temperature. The precipitate was then filtered off and washed with THF. The combined washings and filtrate were then evaporated. Purification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1) afforded the title compound (3.9 g, 75%) which was obtained as a yellow solid. MS: m/e=208.3 [M+H]+.

Workup

  1. temperatureThe mixture was then cooled to 0° C.
  2. filtrationThe precipitate was then filtered off
  3. washwashed with THF
  4. customThe combined washings and filtrate were then evaporated
  5. customPurification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1)

Sources & evidence

ORD record
ord-e09a7f2d9c894a108a0276b4f2b63bb2
Source dataset
uspto-grants-2011_05
Patent number
US07943619B2

Reaction notes

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