许多适当取代的吡啶基或苯基用作胺的电化学氧化的特别有利的活化基序。这些基团为跨众多活化基团和胺支架的叔胺电化学α-官能化提供了一种通用、温和的方法。值得注意的是,该方法适应了前所未有的亲核试剂类别,允许将不同的官能团引入易于制备的胺底物中。然后通过不对称双功能化、N-吡啶胺与其他活性胺的位点选择性功能化、ivosidenib 的正式合成以及 FDA 批准的药物或天然产物底物的多样化的应用来证明该方法的实用性。
Preparative-Scale Synthesis of Vedejs Chiral DMAP Catalysts
作者:Artis Kinens、Simonas Balkaitis、Edgars Suna
DOI:10.1021/acs.joc.8b01687
日期:2018.10.19
A scalable synthesis of chiral Vedejs-type DMAP catalysts is reported. The key step of the synthesis is amination of the enantiomerically pure 4-chloropyridine derivative using well-defined ZnCl2(amine)2 complexes. A series of Zn(II)–amine complexes have been synthesized to explore the scope of the ZnCl2-mediated amination of 4-halopyridines. Mechanistic studies support a Zn(II)-facilitated nucleophilic
Numerous appropriately substituted pyridyl or phenyl groups serve as a particularly advantageous activation motif for the electrochemical oxidation of amines. Such groups enable a general, mild method for the electrochemical α‐functionalization of tertiary amines across numerous activating groups and amine scaffolds. Notably, the method accommodates an unprecedented range of nucleophile classes, allowing
许多适当取代的吡啶基或苯基用作胺的电化学氧化的特别有利的活化基序。这些基团为跨众多活化基团和胺支架的叔胺电化学α-官能化提供了一种通用、温和的方法。值得注意的是,该方法适应了前所未有的亲核试剂类别,允许将不同的官能团引入易于制备的胺底物中。然后通过不对称双功能化、N-吡啶胺与其他活性胺的位点选择性功能化、ivosidenib 的正式合成以及 FDA 批准的药物或天然产物底物的多样化的应用来证明该方法的实用性。