キナクリドン系有機顔料に関する研究(第1報) : 線型キナクリドンの合成

概要

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As a method for synthesis of linear type quinacridone (1), a valuable organic pigment of red coloration is made through 2, 5-dihaloterephthalic acid (8) and 2, 5-dianilinoterephthalic acid (2). Heating of 2, 5-dibromoterephthalic acid and aniline in dimethylf ormamide in the presence of cuprous chloride and copper powder for 8 hours at 153$deg;c yielded 50-70% of theory of (2). Heating of (2) in phosphorus oxychloride and anhydrous aluminum chloride for 6 hours at 100-110°c yielded 87% of theory of (1).
社団法人有機合成化学協会の論文