A General Strategy for the Synthesis of Enantiomerically Pure Azetidines and Aziridines through Nickel-Catalyzed Cross-Coupling
作者:Kim L. Jensen、Dennis U. Nielsen、Timothy F. Jamison
DOI:10.1002/chem.201500886
日期:2015.5.11
expanded this concept to the synthesis of enantiomerically pure, terminal alkyl aziridines. Coupling of a TMS‐protected aziridine alcohol, followed by acidic work‐up to remove the silyl group, provides 1,2‐amino alcohol products that are readily cyclized to aziridines. Both of these sequences display excellent functional group tolerance and deliver the desired azetidine and aziridine products in good to excellent
在本交流中,我们报告了对映体纯的2-烷基氮杂环丁烷的直接合成。该规程基于脂族有机锌试剂与具有拴系噻吩基团的氮丙啶的高度区域选择性镍催化交叉偶联。通过甲基化的活化将硫化物转化为极好的离去基团,并通过环化触发2-取代的氮杂环丁烷核心结构的形成。另外,我们已经将该概念扩展到对映体纯的末端烷基氮丙啶的合成。偶联TMS保护的氮丙啶醇,然后进行酸性处理以除去甲硅烷基,可提供1,2-氨基醇产物,这些产物易于环化成氮丙啶。