Cyanuric chloride → Anthraquinone

Participants

Reaction Steps

1-Amino-2-(3'-amino-4'-sulfophenoxy)-4-(4'-sulfophenylthio)anthraquinone (6 parts), cyanuric chloride (1.8 parts) and 1-aminobenzene-4-β-sulfatoethylsulfone (2.8 parts) were subjected to condensation reactions one after another in an aqueous medium in a conventional manner, followed by a successive condensation reaction with 3-aminobenzenesulfonic acid (1.7 parts) at 50° to 70° C. under a weak acid condition. Thereafter, salting out of the reaction mixture gave an anthraquinone compound of following formula (free acid form). ##STR117##

Provenance & Evidence