Intramolecular Cyclization of Brominated Oxime Ether Promoted with Ytterbium(0) to the Synthesis of Cyclic Imines
作者:Yiqiong Wang、Fei Huang、Songlin Zhang
DOI:10.1002/ejoc.202000678
日期:2020.8.31
A general, efficient, and experimentally simple one‐pot new method for the synthesis of cyclic imines throughintramolecularcyclization of brominated oxime ether promoted by ytterbium(0) was reported for the first time. In this new strategy for the construction of cyclic imines, the N–O bond is used as a receptor of ytterbium reagent rather than as a source of N‐centred radical.
Iminyl Radicals by Reductive Cleavage of N–O Bond in Oxime Ether Promoted by SmI<sub>2</sub>: A Straightforward Synthesis of Five-Membered Cyclic Imines
作者:Fei Huang、Songlin Zhang
DOI:10.1021/acs.orglett.9b02740
日期:2019.9.20
A new generation method of N-centered radicals from the reductive cleavage of the N-O bond in oxime ether promoted by SmI2 is reported for the first time. The in-situ-generated N-centered radicals underwent intramolecular cyclization to afford five-membered cyclic imines in two manners: N-centered radical addition and N-centered anion nucleophilic substitution. From a synthetic point of view, an efficient