Rh COT in the act: A Ni0‐catalyzed [2+2+2+2] cycloaddition provides a high‐yielding, scalable synthesis of the ligand dinaphtho[a,e]cyclooctatetraene (dnCOT). dnCOT complexation with RhI gives [Rh(dnCOT)(MeCN)2]SbF6 (see scheme), an excellent catalyst for [5+2] cycloadditions of vinylcyclopropanes and π‐systems with impressive functional group compatibility.
Rh COT的作用:Ni 0催化的[2 + 2 + 2 + 2]环加成反应可提供高产,可扩展的
配体二
萘并[ a,e ]环
辛酸酯(dnCOT)合成。dnCOT与Rh I的络合得到[Rh(dnCOT)(MeCN)2 ] SbF 6(参见方案),它是
乙烯基环丙烷和π系统的[5 + 2]环加成反应的出色催化剂,具有令人印象深刻的官能团相容性。