A number of acyclic acyl alkyl diimides have been obtained by oxidation of the corresponding alkyl hydrazides. A new method for the synthesis of α-cyanoalkyl hydrazides, the reaction of acid hydrazides with ketones in the presence of sodium cyanide, has been explored. All the acyl alkyl diimides so obtained exhibit a medium to weak i.r. band at ca. 1550 cm−1; evidence supporting the assignment of this band to the —N=N— stretch is given. The results of oxidation of 5-methyl and 5-phenyl-pyrazolidin-3-one are reported, together with the synthesis and oxidation of tetrahydro-6-methyl-3(2H)-pyridazinone.
一些非环状酰基烷基二亚胺已通过氧化相应的烷基肼得到。一种合成α-氰基烷基肼的新方法已被探索,即在氰化钠存在下,酸肼与酮的反应。所有获得的酰基烷基二亚胺在ca. 1550 cm−1处表现出中等到弱的红外吸收峰;提供了支持将该峰归属为—N=N—伸缩的证据。报道了5-甲基和5-苯基吡唑啉-3-酮的氧化结果,以及六氢-6-甲基-3(2H)-吡啶啉酮的合成和氧化。