The reaction of 3-oxo-3-phenyl-2-phenylhydrazonal with functionally substituted and heteroaromatic substituted acetonitrile to yield arylazonicotinic acid derivatives and 5-arylsubstituted pyridines was established. In some cases the produced nicotinates could not be isolated as they underwent thermally induced 6π-electrocyclization yielding polynuclear pyridine derivatives.
3-
氧-3-
苯基-2-
苯基
肼酮与功能性取代和杂环取代的
乙腈反应,生成芳基偶
氮尼古
丁酸衍
生物和5-芳基取代的
吡啶。在某些情况下,所产生的尼古
丁酸酯无法被分离,因为它们经历了热诱导的6π-电环化反应,生成多核
吡啶衍生物。