Water → HCID 19913853, compound

HRID 1110904Notes

Reaction equation

HRID 1110904 reaction equation
[C:1]([C:6]1[O:7][C:8]2[CH:16]=[CH:15][C:14]([Cl:17])=[C:13]([OH:18])[C:9]=2[C:10](=[O:12])[CH:11]=1)([O:3]CC)=[O:2].O>C(O)(=O)C>[C:1]([C:6]1[O:7][C:8]2[CH:16]=[CH:15][C:14]([Cl:17])=[C:13]([OH:18])[C:9]=2[C:10](=[O:12])[CH:11]=1)([OH:3])=[O:2]

Participants

4

Reactant 2

HCID 962WaterHCID 19913827HCID 19913827, compound

Product 1

HCID 19913853HCID 19913853, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

2-carboethoxy-6-chloro-5-hydroxy-4-oxo-4H-1-benzopyran is dissolved in glacial acetic acid and water (5:1) and the solution refluxed for 4 hours. This is cooled and the resulting solid collected and washed with water to give 2-carboxy-6-chloro-5-hydroxy-4-oxo-4H-1-benzopyran.

Workup

  1. temperatureThis is cooled
  2. customthe resulting solid collected
  3. washwashed with water

Sources & evidence

ORD record
ord-f6b6a0ddf8284feaba8db4672a30d08b
Source dataset
uspto-grants-1990_12
Patent number
US04977162

Reaction notes

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