Dimethyl Sulfate → Solvent Red 111

関与物質

反応条件

反応手順

A mixture of 1-aminoanthraquinone (purity 99.6%, 22.4 g), monochlorobenzene (224 g), tetra-n-butyl ammonium bromide (3.4 g), 96% potassium hydroxide (11.7 g) and dimethylsulfuric acid (25 g) was stirred while being maintained at 30° C. for 24 hours. After water (150 g) was added, the solution was stirred for 1 hour, being maintained at 50° C. pH of the aqueous phase was 10 or higher. Then, acetic acid (0.5 g) was added for neutralization (pH of the aqueous phase being 7) and then monochlorobenzene was recovered by heating. After being cooled down to 50° C., the solution was filtered, and a solid was washed and then dried to obtain 1-methylaminoanthraquinone (23.7 g, purity 97.6%, yield 97.6%).

情報源と証拠