A Mannich-Cyclization Approach for the Asymmetric Synthesis of Saturated <i>N</i>-Heterocycles
作者:Mathias Christmann、Alexander Münch、Bianca Wendt
DOI:10.1055/s-2004-835622
日期:——
A concise asymmetric synthesis of disubstituted N-heterocycles is reported. Our approach utilizes an optimized Mannich reaction of functionalized aldehydes, followed by a novel dehydrative cyclization mediated by the Staab reagent (1,1'-carbonyldiimidazole, CDI). The method was applied to the synthesis of azetidines, piperidines and pyrrolidines.
报道了二取代 N-杂环的简明不对称合成。我们的方法利用功能化醛的优化曼尼希反应,然后是由 Staab 试剂(1,1'-羰基二咪唑,CDI)介导的新型脱水环化。该方法用于合成氮杂环丁烷、哌啶和吡咯烷。