HCID 21441250, compound → HCID 54431240, compound

HRID 1579073Notes

Reaction equation

HRID 1579073 reaction equation
[CH2:1]([O:8][C:9]1[CH:17]=[CH:16][C:15]([CH3:18])=[C:11]([C:12]([OH:14])=O)[C:10]=1[C:19]([OH:21])=[O:20])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(OC(=O)C)(=O)C>[CH2:1]([O:8][C:9]1[CH:17]=[CH:16][C:15]([CH3:18])=[C:11]2[C:12]([O:21][C:19](=[O:20])[C:10]=12)=[O:14])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

3

Reactant 1

HCID 21441250HCID 21441250, compound

Product 1

HCID 54431240HCID 54431240, compound

Reagents, catalysts & solvents 1

HCID 7918Acetic AnhydrideSolvent

Procedure

The crude phthalic acid prepared above is heated in 150 ml acetic anhydride for two hours. The solvent is removed under reduced pressure and the crystalline residue collected and washed with ether. The anhydride may be recrystallized from nitromethane to give an analytical sample m.p. 200°-203°C.

Workup

  1. customThe solvent is removed under reduced pressure
  2. customthe crystalline residue collected
  3. washwashed with ether
  4. customThe anhydride may be recrystallized from nitromethane
  5. customto give an analytical sample m.p. 200°-203°C.

Sources & evidence

ORD record
ord-d139e19ea1b348ab8b6ff06bf4c9ade1
Source dataset
uspto-grants-1976_02
Patent number
US03940419

Reaction notes

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