Intramolecular addition of benzylic radicals onto ketenimines. Synthesis of 2-alkylindoles
作者:Mateo Alajarín、Angel Vidal、María-Mar Ortín
DOI:10.1039/b310593h
日期:——
The inter- and intramolecular addition of free radicals onto ketenimines is studied. All the attempts to add intermolecularly several silicon, oxygen or carbon centered radicals to N-(4-methylphenyl)-C,C-diphenyl ketenimine were unsuccessful. In contrast, the intramolecular addition of benzylic radicals, generated from xanthates, onto the central carbon of a ketenimine function with its N atom linked
研究了在酮亚胺上的分子间和分子内自由基的添加。向N-(4-甲基苯基)-C,C-二苯基酮亚胺添加分子间数个以硅,氧或碳为中心的自由基的所有尝试均未成功。相反,在多种反应条件下,发生由黄原酸酯产生的苄基分子内加成到酮亚胺官能团的中心碳上,其N原子与芳环的邻位相连。这些分子内环化提供了新颖的自由基介导的2-烷基吲哚的合成。