A novel early and late transition-metal relay catalysis has been developed by combining a gold-catalyzed cycloisomerization and a Yb(OTf)3-catalyzed diastereoselective [3 + 2] cycloaddition with aziridines in a selective C–C bond cleavage mode. Various biologically significant complex nitrogen-containing spiro heterocycles were rapidly constructed from readily available starting materials under mild
通过将
金催化的环异构化和Yb(OTf)3催化的非对映选择性[3 + 2]环加成反应与
氮丙啶在选择性C-C键裂解模式下结合,已开发出一种新型的早期过渡
金属中继催化。在温和的条件下,由易于获得的起始材料快速构建了各种
生物学上重要的复杂的含氮螺
杂环化合物。