ACTION OF THE HALOGENS, ETC. 



lf>l 



N N 



shows entirely different properties. Orthotoluquinoline gave a 

 similar compound, an isomer of thiochiuanthrene, since the methyl 

 group is eliminated in the course of the reaction. The constitution 

 according to Edinger would be 



These two thiochinanthrenes show entirely different properties 

 from thianthren and its homologues. By their oxidation no sulphox- 

 ides or sulphones can be obtained. The compounds remain either 

 unchanged or are completely oxidized. In one case Edinger obtained 

 nicotinic acid by the oxidation of the isomeric thiochiuanthrene. 



In the light of the above mentioned researches, it was of inter- 

 est to determine, first, whether paratoluquinoline would give an anal- 

 ogous compound; second, whether in this case also the methyl 

 group would be eliminated; and, third, if here also a too high per- 

 centage of hydrogen would be shown, and, in that case, how the 

 theory disturbing fact could be explained. The following research 

 has, it is believed, given answers to these questions: — 



THEORETICAL PART. 



The action of the chlorides of sulphur upon aromatic tertiary 

 amines leads to the result, according to Edinger, that the above men- 

 tioned sulphur bodies are only then formed when the base acted upon 



