Rhodium(I)-Catalyzed Cycloisomerization of Benzylallene-Alkynes through CH Activation
作者:Yasuaki Kawaguchi、Shigeo Yasuda、Akira Kaneko、Yuki Oura、Chisato Mukai
DOI:10.1002/anie.201403990
日期:2014.7.14
RhI‐catalyzed cycloisomerization of benzylallene‐alkynes produced the tricyclo[9.4.0.03,8]pentadecapentaene skeleton through a CH bond activation in good yields. A plausible reaction mechanism proceeds via oxidative addition of the acetylenic CH bond to RhI, an ene‐type cyclization to the vinylidenecarbene–RhI intermediate, and an electrophilic aromatic substitution with the vinylidenecarbene species. It
高效的Rh我benzylallene炔烃的催化的环异构产生的三环[9.4.0.0 3,8 ] pentadecapentaene骨架通过C H键活化以良好的收率。可能的反应机理是通过将炔属CH键氧化加至Rh I,烯型环化至亚乙烯基卡宾–Rh I中间体以及用亚乙烯基卡宾进行亲电芳族取代而进行的。它是基于氘和竞争实验提出的。