Synthesis of alkaloids from aminol derivatives by β-fragmentation of primary alkoxyl radicals
作者:Alicia Boto、Rosendo Hernández、Adriana Montoya、Ernesto Suárez
DOI:10.1016/j.tetlet.2003.12.003
日期:2004.2
The fragmentation of primary alkoxyl radicals, often described as low yielding and plagued by side reactions, proceeded in good to excellent yields when aminol derivatives were used as substrates. Remarkably, no side reactions such as hydrogen abstraction or oxidation were observed. The fragmentation can be coupled with an alkylation reaction to give 2-substituted pyrrolidine and piperidine rings such
当将氨基衍生物用作底物时,通常被描述为低产率并受副反应困扰的伯烷氧基自由基的裂解以良好至优异的产率进行。值得注意的是,未观察到副反应,例如氢提取或氧化。该断裂可以与烷基化反应偶联,得到2-取代的吡咯烷和哌啶环,例如生物碱类似物和官能化的手性氮杂环。