Hydrochloric Acid → N-(5-fluoro-2-oxo-2,3-dihydro-1H-indol-6-yl)-2-hydroxy-2-methyl-propionamide

HRID 2068737Notes

Reaction equation

HRID 2068737 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][C:10]=1[NH:11][C:12]([C:14]([O:17]C(=O)C)([CH3:16])[CH3:15])=[O:13])[NH:7][C:6](=[O:21])[CH2:5]2.[OH-].[Na+].Cl>CO>[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][C:10]=1[NH:11][C:12](=[O:13])[C:14]([OH:17])([CH3:16])[CH3:15])[NH:7][C:6](=[O:21])[CH2:5]2

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 59250100acetic acid 1-(5-fluoro-2-oxo-2,3-dihydro-1H-indol-6-ylcarbamoyl)-1-methyl-ethyl ester

Product 1

HCID 59250047N-(5-fluoro-2-oxo-2,3-dihydro-1H-indol-6-yl)-2-hydroxy-2-methyl-propionamideYield 59.2%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Acetic acid 1-(5-fluoro-2-oxo-2,3-dihydro-1H-indol-6-ylcarbamoyl)-1-methyl-ethyl ester 11a (2.035 mg, 6.9 mmol) was dissolved in 20 mL of methanol under stirring at room temperature, and 20 mL of sodium hydroxide solution (0.7 M) was then added to the solution. The reaction solution was stirred for 4 hours. The reaction was completed until TLC showed the disappearance of starting materials, and the above solution was neutralized with hydrochloric acid (1 M) and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography and dried to give N-(5-fluoro-2-oxo-2,3-dihydro-1H-indol-6-yl)-2-hydroxy-2-methyl-propionamide 11b (900 mg, yield 59.2%) as a white solid.

Workup

  1. stirringThe reaction solution was stirred for 4 hours
  2. customthe solvent was evaporated under reduced pressure
  3. customThe residue was purified by silica gel column chromatography
  4. customdried

Sources & evidence

ORD record
ord-c4dc06b3c2b84397bc6c68ecbdcea45f
Source dataset
uspto-grants-2012_10
Patent number
US08299069B2

Reaction notes

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