Methyl substituted 2-phenyldiazenyl-N-vinylpyrroles when refluxed in toluene in the airflow are unexpectedly oxidized at their methyl substituents retaining the pyrrole and N-vinyl moieties intact. The major products of the autooxidation are hydroxyalkyl derivatives (yield up to 60%), the corresponding aldehydes being formed in minor quantities (yield up to 21%). This non- typical oxidation of substituted
甲基取代的 2-苯基
二氮烯基-N-
乙烯基吡咯在
甲苯中在气流中回流时出乎意料地在其甲基取代基处被氧化,保持
吡咯和 N-
乙烯基部分完整。自动氧化的主要产物是羟烷基衍
生物(产率高达 60%),相应的醛以少量形成(产率高达 21%)。取代
吡咯的这种非典型氧化为苯基
二氮烯基
吡咯染料的官能化开辟了一种概念上的新方法。