OF AROMATIC COMPOUNDS. 6 1 



All these reactions are to be attributed to the action 

 of electrolytic oxygen. In the brief survey which 

 will here be given it is not possible to go into the 

 details of the researches. The following literary data 

 will serve as a guide: 



Research I. 1 Preparation of aniline black. 



Research 2. 2 Electrolysis of aniline with excess of 

 aniline. Electrolysis of toluidene. Electrolysis of 

 mixtures of aniline with toluic acids. 



Research 3.' Electrolysis of aniline and toluidene 

 salts in the presence of nitrate, nitrite, or chlorate of 

 potassium in aqueous solution. 



Research 4." Electrolysis of the salts of methyl- 

 aniline. Electrolysis of the salts of diphenylamine. 

 Electrolysis of the salts of methyl-diphenylamine. 

 Electrolysis of phenol. Electrolysis of the salts of 

 naphthylamine. 



Research 5. 5 Conversion of anthraquinone into ali- 

 zarine by the electrolysis of a mixture of anthra- 

 quinone and potassium hydroxide. 



Liebmann's fl attempts to make quinone by the 

 electrolytic oxidation of aniline or electrolytically 

 prepared aniline black were unsuccessful. 



1 Dingier, Polytechn. Journ., 221, 75. 

 * Ibid., 223, 317. 



3 Ibid., 223, 634. 



4 Ibid., 224, 92. 



6 Ibid., 224, 209. 



' Ztschr. f. Elektroch., 2, 497. 



