作者:Daniel Moser、Yaya Duan、Feng Wang、Yuanhong Ma、Matthew J. O'Neill、Josep Cornella
DOI:10.1002/anie.201806271
日期:2018.8.20
The functionalization of aminoheterocycles by using a pyrylium tetrafluoroborate reagent (Pyry‐BF4) is presented. This reagent efficiently condenses with a great variety of heterocyclic amines and primes the C−N bond for nucleophilic aromatic substitution. More than 60 examples for the formation of C−O, C−N, C−S, or C−SO2R bonds are disclosed herein. In contrast to C−N activation through diazotization
提出了使用四氟硼酸吡啶鎓试剂(Pyry-BF 4)对氨基杂环进行官能化的方法。该试剂可与多种杂环胺有效地缩合,并为亲核芳香族取代反应准备C-N键。本文公开了用于形成CO,CN,CS或CS 2 R键的60多个例子。与通过重氮化和多烷基化进行CN活化相反,该方法的特点是条件温和且对官能团的耐受力强。除小分子衍生化外,Pyry-BF 4还允许以后期方式引入官能团,以提供高度官能化的结构。