OF AROMATIC COMPOUNDS. TJ 



been nitrated. By the electrolytic oxidation of nitroso- 

 piperidine Ahrens ' obtained dipiperidyl (C 10 H ao N Q ). 

 Elbs 3 secured a satisfactory yield of p-nitro-benzyl 

 alcohol from p-nitro -toluene. 



The introduction of hydroxyl-groups into azo-ben- 

 zene, which Heilpern 3 succeeded in accomplishing, 

 can also be regarded as an oxidation process. If azo- 

 benzene be dissolved in as small a quantity of cone, 

 sulphuric acid as possible and this solution be sub- 

 jected to electrolytic action at the anode, chiefly tetra- 

 oxy-azo-benzene is formed : 



C 13 H 10 O 4 N a = (OH) 2 C 6 H,N : NC 6 H 8 (OH) a . 



According to a patent 4 benzoyl-sulphone-imides can 

 be prepared by the electrolytic oxidation of toluene- 

 sulphone -amides ; for example, o-benzoyl-sulphone- 

 imide, or saccharine, from o-toluene-sulphone-amide : 



"""XCH, '+ 3 C61 



The corresponding p-compound, and p-nitro-o- 

 toluene-sulphone-amide, . 



NO 9 .CH 3 .C 9 H,.SO,NH, 

 show a similar behavior. 



Yellow mordant dyes are obtained by the Badische 

 Aniline u. Sodafabrik * by the oxidation of aromatic 



1 Ztschr. f. Elektroch., 2, 579. 



* Ibid. t 2, 522. 



Ibid., 4, 89. 



4 F. v. Heyden's Nachfolger, German Pat.. 85491. 

 6 German Pat., 85390. 



