144 PROCEEDINGS OF THE AMERICAN ACADEMY 



Mesox-o-toluidehydrate resembles in every particular the above 

 described rnesoxanilidehydrate. It is an acid, wbich reddens blue 

 litmus paper, and dissolves in dilute sodic carbonate. Heated 

 quickly in a capillary tube it becomes yellow at 100°, and melts 

 with gas evolution (water) at 127°-131°. About two grams 

 dissolve in a litre of boiling water, and, on cooling, tbe greater 

 portion comes out again in colorless needles. It dissolves in hot 

 anhydrous benzine with yellow color, which shows that dissociation 

 takes place, because on cooling (to 50°) the solution becomes color- 

 less. The substance, crystallizing out from hot benzine, on cool- 

 ing, never consists entirely of mesox-o-toluidehydrate, but contains 

 mesox-o-toluide as an analysis proved. 



That no oxal-o-toluidechloride imidechloride, 



CHsCeH^C^ 1 . CI 



<o 



is formed by the action of phosgene on o-tolylisocyanide is ex- 

 tremely probable, since, on decomposing the imidechloride obtained, 

 with water not a trace of oxal-o-toluidic acid, 



CH 3 C 6 H 4 E--C OH 



. %H 



was obtained.* 



/CH 3 C G H 4 ^C OH \ 

 TT-Pyruvic-o-toluide, I I In. 



V CII3-CO ' 



o-Tolylisocyanide and freshly distilled acetylchloride (one mole- 

 cule) unite quantitatively, after five minutes' heating on a water 

 bath. The resulting yellow-colored imidechloride, 



CH 3 C 6 H 4 N=C C1 

 I 

 CH 3 CO 



* Mauthnerand Suida, Monatshefte fiir Chemie, VII. 234. 



