Acetic Acid → Anthraquinone

Participants

Reaction Steps

The reactor described in Example 1 is charged with a mixture of 60.7 g o-benzyl-toluene (5/8 Mol), 607 ml dry acetic acid, 3 g cobalt (II) acetate.4H2O, 0.5 g manganese (II) acetate.4H2O and 3.0 g cobalt (II) bromide.6H2O. The reaction is carried out as described above. The uptake of oxygen is completed after about 3 hours. After the analogous work up 2.2 g anthraquinone (3.2% of theory) and 68.1 g crude o-benzoyl-benzoic acid (90.4% of theory) are recovered; the acid number approaches 226, and the color is medium brown. Heating of a small sample with concentrated sulfuric acid yields a darkly-colored anthraquinone.

Provenance & Evidence