Sodium Chloride → Anthraquinone

HRID 258356Notes

Reaction equation

HRID 258356 reaction equation
N[C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7](=[O:17])[C:6]=2[C:5](SC2C=CC(S(O)(=O)=O)=C(N)C=2)=[CH:4][C:3]=1C(O)=O.N1C(Cl)=NC(Cl)=NC=1Cl.[Cl-].[Na+]>>[CH:9]1[C:8]2[C:7](=[O:17])[C:6]3[C:15](=[CH:2][CH:3]=[CH:4][CH:5]=3)[C:14](=[O:16])[C:13]=2[CH:12]=[CH:11][CH:10]=1

Participants

4

Reactant 3

HCID 5234Sodium ChlorideHCID 7954Cyanuric chlorideHCID 148764181-Amino-2-carboxy-4-(3'-amino-4'-sulfophenylthio)anthraquinone

Product 1

HCID 6780Anthraquinone

Procedure

1-Amino-2-carboxy-4-(3'-amino-4'-sulfophenylthio)anthraquinone (9.4 parts) and cyanuric chloride (3.7 parts) were subjected a to condensation reaction in an aqueous medium in a usual manner, followed by a condensation reaction with 1-aminobenzene-3-β-sulfatoethylsulfone (5.6 parts) at 20° to 40° C. under a weak acid condition. Thereafter, salting out of the reaction mixture with sodium chloride gave an anthraquinone compound of the following formula (free acid form). ##STR270##

Workup

  1. customto condensation reaction in an aqueous medium in a usual manner

Sources & evidence

ORD record
ord-e6a1ef06c2234b58aa4eab70f6bfa8a8
Source dataset
uspto-grants-1993_11
Patent number
US05266696

Reaction notes

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