Cyanuric chloride → Anthraquinone

Participants

Reaction Steps

1-Amino-4-(3'-amino-2',4',6'-trimethyl-5'-sulfophenylthio)anthraquinone-2-sulfonic acid (23.7 parts), cyanuric chloride (9.3 parts) and 1-aminobenzene-3-β-sulfatoethylsulfone (14.1 parts) were subjected to condensation reactions one after another in an aqueous medium in a usual manner, followed by a further condensation reaction with 3-aminobenzenesulfonic acid (8.7 parts) at 50° to 60° C. under a weak acid condition. Thereafter, salting out of the reaction mixture gave an anthraquinone compound of the following formula (free acid form). ##STR519##

Provenance & Evidence