Sodium Hydroxide → 5-(Benzyloxy)-2-(4-fluorophenyl)furo[2,3-c]pyridine-3-carboxylic acid

HRID 2068378Notes

Reaction equation

HRID 2068378 reaction equation
[OH-].[Na+].[CH2:3]([O:10][C:11]1[CH:12]=[C:13]2[C:19]([C:20]([O:22]C)=[O:21])=[C:18]([C:24]3[CH:29]=[CH:28][C:27]([F:30])=[CH:26][CH:25]=3)[O:17][C:14]2=[CH:15][N:16]=1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1>C1COCC1.CO.C(OCC)(=O)C>[CH2:3]([O:10][C:11]1[CH:12]=[C:13]2[C:19]([C:20]([OH:22])=[O:21])=[C:18]([C:24]3[CH:25]=[CH:26][C:27]([F:30])=[CH:28][CH:29]=3)[O:17][C:14]2=[CH:15][N:16]=1)[C:4]1[CH:5]=[CH:6][CH:7]=[CH:8][CH:9]=1

Participants

6

Reactant 2

HCID 14798Sodium HydroxideHCID 67217578Methyl 5-(benzyloxy)-2-(4-fluorophenyl)furo[2,3-c]pyridine-3-carboxylate

Product 1

HCID 674077135-(Benzyloxy)-2-(4-fluorophenyl)furo[2,3-c]pyridine-3-carboxylic acidYield 100%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

NaOH (27.8 mL, 27.8 mmol, 1M aq.) was added to a stirring solution of methyl 5-(benzyloxy)-2-(4-fluorophenyl)furo[2,3-c]pyridine-3-carboxylate (2.62 g, 6.94 mmol) in THF (174 mL) and MeOH (174 mL) at 60° C. for 2 hours. The mixture was diluted with ethyl acetate and washed with 1M HCl, and sat NaCl. The organic phase was dried over Na2SO4, filtered and concentrated to give the expected product 5-(benzyloxy)-2-(4-fluorophenyl)furo[2,3-c]pyridine-3-carboxylic acid (2.52 g, 6.94 mmol, 100% yield) consistent by LCMS. LC-MS retention time: 2.19 min; m/z (MH+): 364. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Waters SunFire 5 u C18 4.6×50 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 5 ml/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 3 min, a hold time of 1 min, and an analysis time of 4 min where solvent A was 10% acetonitrile/90% H2O/0.1% trifluoroacetic acid and solvent B was 10% H2O/90% acetonitrile/0.1% trifluoroacetic acid. MS data was determined using a Micromass Platform for LC in electrospray mode.

Workup

  1. washwashed with 1M HCl
  2. dry with materialThe organic phase was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-a8f18425e62641aca7ad558c752d56ab
Source dataset
uspto-grants-2012_10
Patent number
US08293909B2

Reaction notes

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