Chlorosuccinimide → HCID 21938656, compound

HRID 1242235Notes

Reaction equation

HRID 1242235 reaction equation
[F:1][C:2]1[CH:8]=[C:7]([O:9][C:10](=[O:15])[C:11]([CH3:14])([CH3:13])[CH3:12])[CH:6]=[CH:5][C:3]=1[NH2:4].[Cl:16]N1C(=O)CCC1=O>FC1C=CC=CC=1>[Cl:16][C:5]1[CH:6]=[C:7]([O:9][C:10](=[O:15])[C:11]([CH3:12])([CH3:14])[CH3:13])[CH:8]=[C:2]([F:1])[C:3]=1[NH2:4]

Participants

4

Reactant 2

HCID 31398ChlorosuccinimideHCID 21938659HCID 21938659, compound

Product 1

HCID 21938656HCID 21938656, compound

Reagents, catalysts & solvents 1

HCID 10008FluorobenzeneSolvent

Procedure

A mixture of 7.3 g (0.035 mol) of 2-fluoro-4-pivaloyloxyaniline and 5.1 g (0.038 mol) of N-chlorosuccinimide in 50 ml of fluorobenzene is heated to reflux under a nitrogen atmosphere for two hours. After cooling to room temperature, the solvent is removed, water is added, and the mixture is extracted with ethyl acetate. The organic layer is washed with 1 N sodium hydroxide, and saturated brine, and dried over magnesium sulfate. Filtration and removal of the solvents gives a residue which is purified by silica gel chromatography (20% ethyl acetate/hexane) to give 2-chloro-4-pivaloyloxy-6-fluoroaniline.

Workup

  1. temperatureis heated
  2. temperatureto reflux under a nitrogen atmosphere for two hours
  3. customthe solvent is removed
  4. additionwater is added
  5. extractionthe mixture is extracted with ethyl acetate
  6. washThe organic layer is washed with 1 N sodium hydroxide, and saturated brine
  7. dry with materialdried over magnesium sulfate
  8. filtrationFiltration and removal of the solvents
  9. customgives a residue which
  10. customis purified by silica gel chromatography (20% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-261333e9b32f4a9dbd890a9b45523876
Source dataset
uspto-grants-2006_10
Patent number
US07115662B2

Reaction notes

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