Acetic Anhydride → alpha-(2-Acetoxy-5-sulfophenylazo)acetoacetanilide

HRID 26123Notes

Reaction equation

HRID 26123 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:4][C:3]=1[N:12]=[N:13][CH:14]([C:24]([CH3:26])=[O:25])[C:15]([NH:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)=[O:16].[C:27](OC(=O)C)(=[O:29])[CH3:28]>N1C=CC=CC=1>[C:27]([O:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:4][C:3]=1[N:12]=[N:13][CH:14]([C:24]([CH3:26])=[O:25])[C:15]([NH:17][C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1)=[O:16])(=[O:29])[CH3:28]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 135839437alpha-(2-Hydroxy-5-sulfophenylazo)acetoacetanilide

Product 1

HCID 23336111alpha-(2-Acetoxy-5-sulfophenylazo)acetoacetanilide

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

α-(2-Hydroxy-5-sulfophenylazo)acetoacetanilide (40 g) was dissolved in boiling pyridine (750 ml) and acetic anhydride (100 ml) added. Some material precipitated while the reaction mixture was hot. After being cooled, the product was filtered off and dried. Yield: 38 g.

Workup

  1. additionadded
  2. customSome material precipitated while the reaction mixture
  3. temperatureAfter being cooled
  4. filtrationthe product was filtered off
  5. customdried

Sources & evidence

ORD record
ord-aa9b866870224e65919dae7971919537
Source dataset
uspto-grants-1979_04
Patent number
US04148643

Reaction notes

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