Water → HCID 12340281, compound

HRID 1076902Notes

Reaction equation

HRID 1076902 reaction equation
[C:1]([C:4]1[CH:17]=[CH:16][C:15]2[O:14][C:13]3[C:8](=[CH:9][C:10]([C:18](=[O:20])[CH3:19])=[CH:11][CH:12]=3)[CH2:7][C:6]=2[CH:5]=1)(=[O:3])[CH3:2].[Cr](O[Cr]([O-])(=O)=O)([O-])(=O)=[O:22].[Na+].[Na+].O>C(O)(=O)C>[C:1]([C:4]1[CH:17]=[CH:16][C:15]2[O:14][C:13]3[C:8](=[CH:9][C:10]([C:18](=[O:20])[CH3:19])=[CH:11][CH:12]=3)[C:7](=[O:22])[C:6]=2[CH:5]=1)(=[O:3])[CH3:2]

Participants

5

Reactant 3

HCID 962WaterHCID 25408Sodium DichromateHCID 12340262HCID 12340262, compound

Product 1

HCID 12340281HCID 12340281, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a solution of 133.1 g (0.5 mole) of 2,7-diacetylxanthene in three liters of glacial acetic acid was added slowly over 11/2 hours 149.0 g (0.5 mole) of sodium dichromate. The resulting mixture was stirred for 2 hours at room temperature and then heated on a steam bath for 4 hours, then cooled, after which the reaction mixture was poured into 9 liters of water. The solid was filtered off and recrystallized from benzene to give the desired product. M.P. 226°-228°C.

Workup

  1. temperatureheated on a steam bath for 4 hours
  2. temperaturecooled
  3. filtrationThe solid was filtered off
  4. customrecrystallized from benzene

Sources & evidence

ORD record
ord-0b1a3b5feb2a4ed8803c696d74cf1a4e
Source dataset
uspto-grants-1976_05
Patent number
US03957989

Reaction notes

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