Unsymmetrical azo compounds: ##EQU1## where (R").sub.3 C-- is tertiary-aliphatic and Z is cyano or a derivative thereof, e.g., 2-t-butylazo-2-cyanopropane; processes for preparing such azo compounds by (a) adding hydrocyanic acid to a preformed hydrazone, ##EQU2## of a ketone to form a hydrazo compound, and oxidizing the hydrazo compound; or (b) oxidizing the hydrazo compound formed by the reaction of a t-aliphatic hydrazine with hydrogen or alkali metal cyanide in water.
非对称偶氮化合物:##EQU1## 其中(R").sub.3 C--为三级脂肪基,Z为
氰基或其衍
生物,例如2-叔丁基偶氮-2-
氰丙烷;通过以下方法制备这种偶氮化合物:(a)将
氰化氢加入预先形成的腙烷,##EQU2## 与酮的反应形成联氮化合物,并氧化联氮化合物;或者(b)将三级脂肪基腙与
水中的氢或碱
金属
氰化物反应形成的联氮化合物氧化。