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UNIVERSITY OP COLORADO STUDIES 



that in the reaction two quinoliue molecules had been, combined by 

 means of two sulphur atoms in the manner represented by the formula 



N N 



Now Schmidt' obtained from SjCl^ and benzene a compound 



which Kratft'' obtained through a different method and named 

 Thianthrene. This body however shows the characteristic properties 

 of a disulphide. On oxidation with nitric acid Krafft obtained a 

 disulphoxide 



which could be reduced easily to thianthrene by means of zinc and 

 acetic acid. Chromic acid oxidizes thianthrene to a disulphone, 



On the other hand the compound obtained by Edinger from 

 quinoline and S2CI2, and to which he gave the name Thiochinanthrene 

 and the constitution 



(1) Berliner Berichte. 11. 1168. 



(2) Berliner Berichte. 29. 435. 



