5-Acetylsalicylic acid → 2-Hydroxy-5-[1-oxo-3-[4-[(2-pyridinylamino)sulfonyl]phenyl]-2-propenyl]benzoic acid

HRID 743018Notes

Reaction equation

HRID 743018 reaction equation
[CH:1]([C:3]1[CH:8]=[CH:7][C:6]([S:9]([NH:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][N:14]=2)(=[O:11])=[O:10])=[CH:5][CH:4]=1)=O.[C:19]([C:22]1[CH:23]=[CH:24][C:25]([OH:31])=[C:26]([CH:30]=1)[C:27]([OH:29])=[O:28])(=[O:21])[CH3:20]>[OH-].[Na+].O.C(O)(=O)C>[OH:31][C:25]1[CH:24]=[CH:23][C:22]([C:19](=[O:21])[CH:20]=[CH:1][C:3]2[CH:8]=[CH:7][C:6]([S:9]([NH:12][C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][N:14]=3)(=[O:11])=[O:10])=[CH:5][CH:4]=2)=[CH:30][C:26]=1[C:27]([OH:29])=[O:28]

Participants

6

Reactant 2

HCID 831515-Acetylsalicylic acidHCID 194233934-Formyl-N-(2-pyridinyl)benzenesulfonamide

Product 1

HCID 542873792-Hydroxy-5-[1-oxo-3-[4-[(2-pyridinylamino)sulfonyl]phenyl]-2-propenyl]benzoic acid

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 962WaterSolventHCID 14798Sodium HydroxideSolvent

Procedure

4-Formyl-N-(2-pyridinyl)benzenesulfonamide (5.7 g, 0.022 mol), 5-acetyl-2-hydroxybenzoic acid (6.64 g, 0.044 mol) in 5M sodium hydroxide (20 ml) were stirred for 3 days at room temperature. The solution was diluted with water (100 ml) and acetic acid added dropwise in excess. The precipitate was collected by filtration and washed with water. After drying, the material was recrystallized from acetic acid and dried at 120° C. in vacuo. Yield 6.4 g, 66%.

Workup

  1. additionadded dropwise in excess
  2. filtrationThe precipitate was collected by filtration
  3. washwashed with water
  4. customAfter drying
  5. customthe material was recrystallized from acetic acid
  6. customdried at 120° C. in vacuo

Sources & evidence

ORD record
ord-d2b7b32d120e4b5c8f212fbdda865c4e
Source dataset
uspto-grants-1996_09
Patent number
US05556855

Reaction notes

Loading…