NEF. — BIVALENT CARBON. 183 



can readily be formed. It is, however, also possible that the addition 



product 1., 



hgON : CH 



I 

 hgON : CCl, 



first goes over, by oxidatioo, into 



hgON : C-H 



CI-C : NOhg, 



II 

 O 



which then can add itself to cyanide o^ mercury, C : Nhg, present, 

 giving directly the addition product III., which, with ammonia, gives 

 mercuric oxide and ammonic fulminurate. 



CN-C : NOH 



Synthesis of Cyanisonitrosoacetamide, I 



HOC : NH. 



Seidel * has recently obtained, on treating silver fulminurate with 

 ethyliodide, a substance, C3H2N303(C2H5), which, on boiling with 

 water, decomposes into acetaldehyde, C2H4O, and a substance having 

 the formula C3H3N3O2, which he therefore calls desoxyfulminuric 

 acid. If fulminuric acid is identical with nitrocyanacetamide, 



CH-CHNO2 

 I 

 HOC : NH, 



it follows, by reason of the experiments on nitro compounds presented 

 in the preceding paper, that, on treating the silver salt of fulminuric 

 acid, 



O 

 II 

 CN-C : NOAg, 

 I 

 HOCNH. 



with ethyliodide, an ester of the constitution 



O 



II 



CN-C : N-OC2H, 



I 

 HOCNH 



must be formed. 



* Ber d. chem. Ges., XXV. 431 and 2756. 



