.) I Cl 



posed oil boiling witii water. It melts at 224°; its solutions have 

 an acid reaction. The analysis gave figures agreeing with those required 



CO-NH-SO,-C,H, 



by omïyïbiethanesuïphonamide CO-NH-SO^-C.H^. On boiling with 

 water oxalic acid may be already detected therein. 



Hence, ethanesulfonamide like benzenesulphonamide yields with 

 oxalylchloride an oxalylderivative. 



1 now prepared ethanesulphonmethylamide, obtained already in 

 1886 by me and Ki.obbie from the chloride with methylamine in 

 ether, from the chloride by means of an aqueous 33 7o solution of 

 methylamine; the chloride was diluted with ether. After being dried 

 it was distilled under diminished pressure. On strong undercooling 

 by liquid air it crystallized and even remained solid above 0°; the 

 melting point which was not yet determined accurately, lies presum- 

 ably between 3° and 7°. Hence, it melts again lower than the 

 ethylsulfonamide, in harmonj^ with the above-mentioned regularity. 



Boiled with oxalylchloride in benzene an evolution of hydrogen 

 chloride only started on warming and had not yet ceased after 

 10 hours boiling. The benzene was now distilled off when the residue 

 became crystalline. It was washed with water and with ether in 

 which, as in alcohol, it is but little soluble and after careful drying 

 crystallized from boiling benzene, when it forms beautiful thick crystals 

 which melt at 144°. In chloroform it is also freely soluble. It is not 

 decomposed on boiling with water but when boiled with aqueous 

 potassium hydroxide it yields oxalic acid. The analysis gave figures 

 required for oxalylbisethanesulphonmethylamide CO — N(CHg) — SOj . C^Hj, 



CO— N(CH,)— SO,.C,H, 

 A nitroderivative from ethanesulphonmethylamide had been obtained 

 previously by me and Klobbie by the action of absolute nitric acid, 

 but neither the ethanesulphonamide nor the z>obutyrylamide had as 

 yet been treated with nitric acid. 1 have now supplemented this void 

 and also treated the sulphon-wobutyricdiamide of Moll van Charante 

 in the same manner. 



The /.^obutyrylamide placed in cooled absolute nitric acid yields, 

 when the solution attains the ordinary temperature, slowly and in 

 theoretical quantity nitrous oxide like all simple amides. 



Ethanesulphonamide when placed in absolute nitric acid causes a 

 sudden and rapid (explosive like) evolution of gas; on cooling to 

 — 18° the evolution is quiet but yet it ceases within an hour. The 

 gas is nitrous oxide. 



