HCID 19893011, compound → HCID 13535835, compound

HRID 365067Notes

Reaction equation

HRID 365067 reaction equation
[Cl:1][C:2]1[C:10]([CH3:11])=[CH:9][CH:8]=[C:4]([C:5]([OH:7])=O)[C:3]=1[C:12]([OH:14])=[O:13]>C(OC(=O)C)(=O)C>[Cl:1][C:2]1[C:10]([CH3:11])=[CH:9][CH:8]=[C:4]2[C:5]([O:14][C:12](=[O:13])[C:3]=12)=[O:7]

Participants

3

Reactant 1

HCID 19893011HCID 19893011, compound

Product 1

HCID 13535835HCID 13535835, compound

Reagents, catalysts & solvents 1

HCID 7918Acetic AnhydrideSolvent

Procedure

A stirred solution of 21.5 g (0.10 mol) of 3-chloro-4-methylphthalic acid in 300 mL acetic anhydride is heated under reflux for six hours, allowed to cool to room temperature and concentrated in vacuo several times with anhydrous toluene. A viscous, dark, amber syrup is obtained, characterized by an infrared spectrum and used without further purification.

Workup

  1. temperatureunder reflux for six hours
  2. concentrationconcentrated in vacuo several times with anhydrous toluene
  3. customA viscous, dark, amber syrup is obtained
  4. customused without further purification

Sources & evidence

ORD record
ord-e55b2183b44142f5b77067a41c1da20a
Source dataset
uspto-grants-1986_08
Patent number
US04608079

Reaction notes

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