Extensions of von Braun cyanogen bromide reaction have been undertaken on some aliphatic and heterocyclic amines. Monocyanamides of all these bases yielded their respective urea and carboxamide derivatives on hydrolysis with dilute hydrochloric acid. They also gave the amido derivatives on reaction with Zn/HCl, as in the case of diisobutyl and di-2-butyl cyanamides.