Chiral Lewis Acid Catalyzed Reactions of α‐Diazoester Derivatives: Construction of Dimeric Polycyclic Compounds
作者:Fei Tan、Xiaohua Liu、Yan Wang、Shunxi Dong、Han Yu、Xiaoming Feng
DOI:10.1002/anie.201810030
日期:2018.12.3
An unexpected homologation/dyotropic rearrangement/interconversion/[3+2] cycloaddition cascade reaction of α‐diazoester‐terminated N‐propyl‐substituted isatin derivatives was achieved in the presence of a chiral N,N′‐dioxide/ScIII catalyst. This catalytic manifold allows rapid construction of several classes of dimeric polycyclic compounds with good yields and high levels of diastereo‐ and enantioselectivity
在手性N,N'-二氧化物/ Sc III催化剂的存在下,发生了意料之外的α-重氮酸酯封端的N-丙基-取代的靛红衍生物的同源/发序重排/互变/ [3 + 2]环加成级联反应。该催化歧管可以快速构建具有良好收率和高水平的非对映和对映选择性(最高ee达99%)的几类二聚多环化合物。此外,大环二聚体可通过分子间同源过程获得。