Rh( I )配合物催化烯-亚乙烯基环丙烷的二聚反应顺利进行,构建了一系列操作步骤简单、反应条件温和、官能团耐受性好的螺[4,5]癸烷骨架产物。在本文中,实验和计算研究相结合,揭示了反离子辅助的 Rh( I )–Rh( III )–Rh( V )–Rh( III )–Rh( I) 涉及串联氧化环金属化/还原消除/选择性氧化加成/选择性还原消除/还原消除步骤的催化循环;此外,通过DFT计算,确定了五价螺铑中间体是该二聚反应的关键中间体。
Palladium-Initiated Radical Cascade Stereoselective Iodofluoroalkylation/Cycloisomerization of Ene-vinylidenecyclopropanes
作者:Song Yang、Qin Xu、Min Shi
DOI:10.1002/chem.201601625
日期:2016.7.18
A novel and convenient palladium‐initiated radical cascade stereoselective iodofluoroalkylation/cycloisomerization of ene‐vinylidenecyclopropanes with fluoroalkyl iodides has been developed. The reaction proceeds under mild reaction conditions with high atom economy and stereoselectivity, thereby allowing an efficient access to a variety of difluoromethylated or perfluoroalkylated pyrrolidines tethered