Hydrogen Peroxide → ST50924812

HRID 461400Notes

Reaction equation

HRID 461400 reaction equation
[CH3:1][O:2][C:3]([NH:5][C:6]1[C:19]2[CH2:18][C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11](=[O:20])[C:10]=2[CH:9]=[CH:8][CH:7]=1)=[O:4].[O-:21][Si]([O-])([O-])[O-].[K+].[K+].[K+].[K+].OO>O>[CH3:1][O:2][C:3]([NH:5][C:6]1[C:19]2[C:18](=[O:21])[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11](=[O:20])[C:10]=2[CH:9]=[CH:8][CH:7]=1)=[O:4]

Participants

5

Reactant 3

HCID 784Hydrogen PeroxideHCID 21393617HCID 21393617, compoundHCID 222229421312-76-1

Product 1

HCID 4161864ST50924812Yield 92.8%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

135.5 g (0.5 mole) of 4-methoxycarbonylamino-anthrone in 1.5 liters of water are warmed to 70° C. After adding 50 ml of potassium water glass (d = 1.25), 400 ml of a hydrogen peroxide solution which contains 80 g per liter are added dropwise. The mixture is then stirred until the thin layer chromatogram of a sample which is withdrawn indicates the end of the reaction. In the course of the oxidation, the suspension has developed an intense reddish-tinged yellow color. The suspension is filtered and the product is washed until neutral and dried. 130.4 g (= 92.8%) of 1-methoxycarbonylamino-anthraquinone are obtained / melting point 214° C (from nitrobenzene).

Workup

  1. additionare added dropwise
  2. customis withdrawn
  3. customthe end of the reaction
  4. filtrationThe suspension is filtered
  5. washthe product is washed until neutral and
  6. customdried

Sources & evidence

ORD record
ord-7f2134670d8e4a31af4942b983a883a7
Source dataset
uspto-grants-1977_12
Patent number
US04062875

Reaction notes

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