3-Acetoxy-6-fluoro-5-methylpyridine → 6-Fluoro-5-methylpyridin-3-ol

HRID 2185736

Reaction equation

HRID 2185736 reaction equation
C([O:4][C:5]1[CH:6]=[N:7][C:8]([F:12])=[C:9]([CH3:11])[CH:10]=1)(=O)C>[OH-].[Na+]>[F:12][C:8]1[C:9]([CH3:11])=[CH:10][C:5]([OH:4])=[CH:6][N:7]=1

Participants

3

Reactant 1

HCID 224516053-Acetoxy-6-fluoro-5-methylpyridine

Product 1

HCID 229897166-Fluoro-5-methylpyridin-3-olYield 87%

Reagents, catalysts & solvents 1

HCID 14798Sodium HydroxideSolvent

Procedure

The product of step 32d (3.6 g, 21.3 mmol) was dissolved in 20% aqueous NaOH (25 mL). After complete consumption of the starting material the solution was neutralized by addition of HCl. The aqueous mixture was extracted with ethyl acetate. The organic extracts were dried (MgSO4), and the solvent was evaporated. The crude product was triturated with hexane to yield 2.35 g (87%) of the title compound: MS (CI/NH3) m/z: 128 (M+H)+, 145 (M+NH4)+; 1H NMR (CDCl3, 300 MHz) δ: 7.61(t, J=2.2 Hz, 1H), 7.17 (m, 1 H), 2.25 (s, 3H).

Workup

  1. customAfter complete consumption of the starting material the solution
  2. additionwas neutralized by addition of HCl
  3. extractionThe aqueous mixture was extracted with ethyl acetate
  4. dry with materialThe organic extracts were dried (MgSO4)
  5. customthe solvent was evaporated
  6. customThe crude product was triturated with hexane

Sources & evidence

ORD record
ord-b0ac13076dc644fdbf550c3adab0f66b
Source dataset
uspto-grants-2002_06
Patent number
US06403575B1

Linked notes

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