Hydrogen Peroxide → HCID 21543589, compound

HRID 1580801Notes

Reaction equation

HRID 1580801 reaction equation
[O:1]=[C:2]1[C:14]2[CH:13]=[C:12]([C:15]([OH:17])=[O:16])[CH:11]=[CH:10][C:9]=2[C:8]2[C:3]1=[CH:4][C:5]([C:18]([OH:20])=[O:19])=[CH:6][CH:7]=2.[OH:21]O>S(=O)(=O)(O)O>[O:21]=[C:2]1[O:1][C:14]2[CH:13]=[C:12]([C:15]([OH:17])=[O:16])[CH:11]=[CH:10][C:9]=2[C:8]2[CH:7]=[CH:6][C:5]([C:18]([OH:20])=[O:19])=[CH:4][C:3]1=2

Participants

4

Reactant 2

HCID 784Hydrogen PeroxideHCID 27589459-Oxo-9H-fluorene-2,7-dicarboxylic acid

Product 1

HCID 21543589HCID 21543589, compound

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidSolvent

Procedure

A suspension of 12.0 g (0.045 mole) of 9-oxo-fluorene-2,7-dicarboxylic acid in 100 ml of concentrated sulfuric acid is slowly reacted with 12.0 ml of a 30% hydrogen peroxide solution. The reaction is strongly exothermic and is controlled by cooling the stirred reaction mixture in a water bath. The cooled reaction mixture is poured onto 500 ml of an ice water mixture, filtered and washed with water. The residue is resuspended in water, stirred, filtered and washed with a total of about 350 ml of deionized water, to yield 11.2 g of 6-oxo-6H-dibenzo[b,d]pyran-3,8-dicarboxylic acid having a m.p. greater than 300°C.

Workup

  1. temperatureby cooling
  2. customthe stirred reaction mixture in a water bath
  3. customThe cooled reaction mixture
  4. filtrationfiltered
  5. washwashed with water
  6. filtrationfiltered
  7. washwashed with a total of about 350 ml of deionized water

Sources & evidence

ORD record
ord-346d40e669dd4c3bb7307918cbcb434f
Source dataset
uspto-grants-1976_01
Patent number
US03933893

Reaction notes

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