hydrazides makes them preferred nucleophiles for the synthesis of the N-substituted azaozonides in acid-catalyzed three-component condensation with 1,5-diketones and H2O2. In the case of more basic N sources, e.g., hydrazine and primary amines, such condensation does not occur under these reaction conditions. The method can be applied to a wide range of hydrazides and affords the target bicyclic azaozonides
与直觉相反,酰
肼中 NH 2基团的低碱度使其成为在酸催化的与 1,5-二酮和 H 2 O 2的三组分缩合中合成 N 取代的氮杂氮化合物的首选亲核试剂。在更碱性N源的情况下,例如
肼和
伯胺,在这些反应条件下不会发生这种缩合。该方法可应用于多种酰
肼,并以 27-86% 的收率提供目标双环偶氮唑啉化合物。