172 Proceedings of the Royal Irish Academy. 



condenser, for two hours. The solution was poured into an evaporating dish. 

 On standing, pale grey prisms separated. An alcoholic solution of the crude 

 producl was boiled for half an hour with animal charcoal and filtered. As 

 the melting-point, 98° C, of the colourless prismatic solid, which separated 

 from the liquid on standing, was somewhat higher than that, 93° C, given 

 by Streiff (toe. tit. for the same substance, an analysis of it was thought 

 advisable : — 



0*1736 grams of the substance gave 16*8 c.c. of moist nitrogen 

 i 15 C. and 76."> m.m.p. 



corresponding l" N 11-38. 

 C,.H„N,0 requires N 11-3. 



When boiled with glacial acetic acid the nitroso compound was slowly 

 decomposed. Dilute acids also decomposed it slowly in solution, whilst con- 

 centrated Bulphuric acid decomposed it in the cold with effervescence. 



2. 1 - NUro- I'l" nyl-2-Naphthylam iiu . 



This compound, which had not Keen previously obtained, was prepared by 

 the interaction of 4-nitro-l-bromo-benzene with 2-naphthylamine. 



Two grams of dry potassium carbonate, 0*5 grams of a mixture of copper 

 dust and potassium iodide, 5 grams of dry 4-nitro-l-bromo-benzene, and 

 3*5 grams ol 2 uaphthylamine were heated with 10-15 c.c. of uitrobenzene in 

 an oil-bath at a temperature of 180-190 C. for 10-12 hours. The nitro- 

 ben • removed by distillation in a current of steam, it was found 



important in this, and similar experiments, to neutralize any alkaline 

 carbonate present which in the presence of steam readily attacks many of 

 the nitro compounds dealt with here 



\ ■v removal of the nitrobenzene the residue was cooled, filtered, dried, 

 and extracted with 30cc. of boiling benzene. When the benzene solution 

 was allowed to stand, yellow, matted, acicular crystals, melting at 283 284 C, 

 were obtained. Thes i malysis the following results : — 



0*127ti - the substance gave 11 "9 c.c. of moist nitrogen 



at 19 c. and 761 m.m.p. 



corresponding to x lo-y 

 l HuNjO requires N 10*6. 



4'-Nitro-phenyl-2-naphthylamine is readily soluble in benzene, sparingly 

 soluble in cold alcohol or ether, and gives a violet-blue coloration with 

 concent* ited sulphuric acid. 



