Hydrochloric Acid → 1,2,4,5-Benzenetetrol

HRID 400284Notes

Reaction equation

HRID 400284 reaction equation
[OH:1][C:2]1[C:3](=[O:10])[CH:4]=[C:5]([OH:9])[C:6](=[O:8])[CH:7]=1.[O-]S(S([O-])=O)=O.[Na+].[Na+].Cl>O>[OH:1][C:2]1[CH:7]=[C:6]([OH:8])[C:5]([OH:9])=[CH:4][C:3]=1[OH:10]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 24489Sodium DithioniteHCID 692132,5-Dihydroxy-1,4-benzoquinone

Product 1

HCID 694641,2,4,5-Benzenetetrol

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

2,5-Dihydroxy-1,4-benzoquinone (4.00 g, 28.55 mmol) was suspended in water (50 ml, distilled) followed by Na2S2O4 (10.00 g, 57.47 mmol) and HCl (5.5 g, 55.75 mmol conc. soln.). The mixture was stirred 30 min. at room temperature and evaporated to dryness. The residue was washed with THF (40 ml) and filtered. The THF was evaporated yielding 2.00 g (14.07 mmol, 49.3%) of the title substance.

Workup

  1. customevaporated to dryness
  2. washThe residue was washed with THF (40 ml)
  3. filtrationfiltered
  4. customThe THF was evaporated
  5. customyielding 2.00 g (14.07 mmol, 49.3%) of the title substance

Sources & evidence

ORD record
ord-150c9cd783ea4d13966ca91feada9b65
Source dataset
uspto-grants-1998_10
Patent number
US05827501

Reaction notes

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