Intramolecular Radical Aziridination of Allylic Sulfamoyl Azides by Cobalt(II)‐Based Metalloradical Catalysis: Effective Construction of Strained Heterobicyclic Structures
作者:Huiling Jiang、Kai Lang、Hongjian Lu、Lukasz Wojtas、X. Peter Zhang
DOI:10.1002/anie.201605238
日期:2016.9.12
strained 2‐sulfonyl‐1,3‐diazabicyclo[3.1.0]hexane structures in high yields through intramolecular radical aziridination of allylic sulfamoyl azides. The resulting [3.1.0] bicyclic aziridines prove to be versatile synthons for the preparation of a diverse range of 1,2‐ and 1,3‐diamine derivatives by selective ring‐opening reactions. As a demonstration of its application for target synthesis, the metalloradical
基于钴(II)的金属自由基催化(MRC)已成功应用于通过烯丙基氨磺酰叠氮化物的分子内自由基氮丙啶化,以高产率有效构建高张力的2-磺酰基-1,3-二氮杂双环[3.1.0]己烷结构。由此产生的[3.1.0]双环氮丙啶被证明是通过选择性开环反应制备各种1,2-和1,3-二胺衍生物的通用合成子。为了证明其在靶点合成中的应用,金属自由基分子内氮丙啶化反应已被纳入有效合成强效神经激肽 1 (NK 1 ) 拮抗剂的关键步骤,总产率为 60%。