Rhodium(I)‐Catalyzed Cycloisomerization of Homopropargylallene‐Alkynes through C(sp
<sup>3</sup>
)−C(sp) Bond Activation
作者:Yasuaki Kawaguchi、Kenya Yabushita、Chisato Mukai
DOI:10.1002/anie.201713096
日期:2018.4.16
Upon exposure to a catalytic amount of [RhCl(CO)2]2 in 1,4‐dioxane, homopropargylallene‐alkynes underwent a novel cycloisomerization accompanied by the migration of the alkyne moiety of the homopropargyl functional group to produce six/five/five tricyclic compounds in good yields. A plausible mechanism was proposed on the basis of an experiment with 13C‐labeled substrate. The resulting tricyclic derivatives
在1,4-二恶烷中暴露于催化量的[RhCl(CO)2 ] 2后,高炔丙炔基炔烃经历新的环异构化,伴随着高炔丙官能团的炔基部分的迁移,从而产生六/五/五三环化合物产量高。在对13 C标记的底物进行实验的基础上,提出了一种合理的机制。将得到的三环衍生物进一步转化为具有邻位顺式二羟基的相应双环[3.3.0]骨架。