Water → 1-(1-Ethylpropylamino)-4-bromanthraquinone

HRID 260818

Reaction equation

HRID 260818 reaction equation
[CH2:1]([CH:3]([NH:6][C:7]1[C:20]2[C:19](=[O:21])[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12](=[O:22])[C:11]=2[CH:10]=[CH:9][CH:8]=1)[CH2:4][CH3:5])[CH3:2].O.S([O-])([O-])=O.[Na+].[Na+].[Br:30]Br>C(O)(=O)C>[CH2:1]([CH:3]([NH:6][C:7]1[C:20]2[C:19](=[O:21])[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12](=[O:22])[C:11]=2[C:10]([Br:30])=[CH:9][CH:8]=1)[CH2:4][CH3:5])[CH3:2]

Participants

6

Reactant 4

HCID 962WaterHCID 24408Bromine3×HCID 24437Sodium SulfiteHCID 229162751-(1-Ethylpropylamino)anthraquinone

Product 1

HCID 229162741-(1-Ethylpropylamino)-4-bromanthraquinone

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent2×

Procedure

EPAQ (20.02 g) was dissolved in hot acetic acid. In a separate flask, bromine (12.03 g) was dissolved in acetic acid (ca. 10 mL). The bromine solution was slowly added to the dye solution. The reaction was allowed to proceed for 1/2 hour, with occasional shaking. The reaction mixture was poured into water (600 mL), and aqueous sodium sulfite was added to discharge the bromine. The aqueous solution was decanted off. The solid was dissolved in methylene chloride and then concentrated and slowly added to cold methanol whereupon a solid precipitated.

Workup

  1. additionwas added
  2. customThe aqueous solution was decanted off
  3. dissolutionThe solid was dissolved in methylene chloride
  4. concentrationconcentrated
  5. additionslowly added to cold methanol whereupon a solid
  6. customprecipitated

Sources & evidence

ORD record
ord-2fff4748180d44a0b1c7265e36508505
Source dataset
uspto-grants-1996_06
Patent number
US05530067

Linked notes

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