Cyanuric chloride → Anthraquinone

Participants

Reaction Steps

1-Amino-4-(4'-Aminomethyl-2'-sulfoanilino)anthraquinone-2-sulfonic acid (27.3 parts), cyanuric chloride (9.3 parts) and 1-aminobenzene-3-β-sulfatoethylsulfone (14.1 parts) were subjected to condensation in an aqueous medium one after another in a usual manner. Successively, the resulting condensate was further subjected to condensation with 1-amino-4-(4'-aminomethyl-2'-sulfoanilino)anthraquinone-2-sulfonic acid (24.5 parts) at 60° to 70° C. under a weak acid condition, and thereafter, the reaction mixture was salted-out to separate crystals, thereby obtaining an anthraquinone compound of the following formula in the free acid form. ##STR512##

Provenance & Evidence