Reactions of indolic nitrones and N-heteroaromatic bases under irradiation and chemical oxidation
作者:Angelo Alberti、Paola Astolfi、Dietrich Döpp、Lucedio Greci、Dante Macciantelli、Rita Petrucci
DOI:10.1039/b212663j
日期:——
The spin adducts formed under UVA irradiation or in the presence of mild oxidants in the reaction of a number of heteroaromatic bases and two indolic nitrones have been characterized by means of ESR spectroscopy. The formation of the spin adducts is explained via the Forrester–Hepburn mechanism, while the occurrence of inverted spin trapping is excluded. Photolysis of nitrones 1 and 2 or of the corresponding cyclic hydroxamic acids resulted in the formation of the related acyl nitroxides.
在 UVA 照射下或在温和氧化剂存在下,许多杂芳族碱基和两个吲哚硝酮反应中形成的自旋加合物已通过 ESR 光谱进行了表征。自旋加合物的形成通过福雷斯特-赫本机制来解释,而反向自旋捕获的发生被排除。硝酮 1 和 2 或相应的环状异羟肟酸的光解导致相关酰基硝基氧的形成。