Niobium-catalyzed Activation of CF<sub>3</sub>Group on Alkene: Synthesis of Substituted Indenes
作者:Kohei Fuchibe、Kohei Atobe、Yukari Fujita、Keiji Mori、Takahiko Akiyama
DOI:10.1246/cl.2010.867
日期:2010.8.5
A CF3 group attached to an alkene functionality was activated by a zero-valent niobium catalyst to generate niobium alkenylcarbenoid species. The niobium carbenoid species then underwent insertion to an internal aromatic C–H σ bond to give indene derivatives in good yields. Isomerization in terms of the alkene geometry was also observed.
通过零价铌催化剂活化连接到烯官能团上的 CF3 基团,生成铌烯基类碳化合物。铌类羰基化合物随后插入内部芳香族 C-H σ 键,以良好的收率生成茚衍生物。此外,还观察到烯烃几何形状的异构化现象。