spectroscopically identified to date. The title compound was prepared by flash vacuum pyrolysis of malonamic acid and was characterized employing matrix isolation infrared as well as ultraviolet/visible spectroscopy. Coupled-cluster computations at the AE-CCSD(T)/cc-pVTZ level of theory support the spectroscopic assignments. Upon photolysis at λ > 270 nm, the enol rearranges to acetamide as well as ketene
酰胺互变异构体构成较高能量的酰胺键连接,不仅是多种
生物学过程的关键,而且也是益生元过程的关键。在这项工作中,我们介绍了1-
氨基
乙烯醇(乙酰胺的高能互变异构体)的气相合成,该合成迄今为止尚未进行光谱鉴定。通过快速真空热解
丙二酸来制备标题化合物,并使用基质分离红外以及紫外/可见光谱对其进行表征。理论上在AE-CC
SD(T)/ cc-pVTZ级别上的耦合群集计算支持光谱分配。在λ > 270 nm处光解后,烯醇重排成乙酰胺以及
乙烯酮和
氨。由于后两者的能量甚至更高,它们构成了用于形成标题化合物的可行的起始原料。