1,4-Dihydroxy-6-carboxy-anthraquinone → HCID 178524096, compound

HRID 1785387Notes

Reaction equation

HRID 1785387 reaction equation
[OH:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][C:10]([C:17]([OH:19])=[O:18])=[CH:11][CH:12]=3)[C:7](=[O:20])[C:6]=2[C:5]([OH:21])=[CH:4][CH:3]=1>C(O)(=O)C.[Zn]>[OH:1][C:2]1[CH2:3][CH2:4][C:5]([OH:21])=[C:6]2[C:15]=1[C:14](=[O:16])[C:13]1[C:8](=[CH:9][C:10]([C:17]([OH:19])=[O:18])=[CH:11][CH:12]=1)[C:7]2=[O:20]

Participants

4

Reactant 1

HCID 4333691,4-Dihydroxy-6-carboxy-anthraquinone

Product 1

HCID 178524096HCID 178524096, compound

Reagents, catalysts & solvents 2

HCID 23994ZincCatalystHCID 176Acetic AcidSolvent

Conditions

Temperature
100 °C

Procedure

1,4-Dihydroxy-anthraquinone-6-carboxylic acid (1.5 g) is mixed with Zn dust (3 g) in 300 mL glacial Acetic acid. The mixture is heated to 100° C. for 2 hours, filtered through Celite concentrated to half volume and added 250 mL water and placed at 5° C. overnight. The precipitate is collected by filtration. Yield: 1.1 g.

Workup

  1. filtrationfiltered through Celite
  2. concentrationconcentrated to half volume
  3. additionadded 250 mL water
  4. filtrationThe precipitate is collected by filtration

Sources & evidence

ORD record
ord-4c833a1722f14bb3875f575e13f03258
Source dataset
uspto-grants-2009_03
Patent number
US07504495B2

Reaction notes

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