P
<sup>III</sup>
/P
<sup>V</sup>
=O Catalyzed Cascade Synthesis of N‐Functionalized Azaheterocycles
作者:Trevor V. Nykaza、Gen Li、Junyu Yang、Michael R. Luzung、Alexander T. Radosevich
DOI:10.1002/anie.201914851
日期:2020.3.9
the modular synthesis of diverse N-aryl and N-alkyl azaheterocycles (indoles, oxindoles, benzimidazoles, and quinoxalinediones) is reported. The method employs a small-ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane P-oxide) and a hydrosilane reductant to drive the conversion of ortho-functionalized nitroarenes into azaheterocycles through sequential intermolecular reductive C-N
报道了一种有机催化方法,用于模块化合成各种N-芳基和N-烷基氮杂杂环(吲哚,羟吲哚,苯并咪唑和喹喔啉二酮)。该方法采用小环有机磷基催化剂(1,2,2,3,4,4-六甲基膦烷P-氧化物)和氢化硅烷还原剂通过顺序的分子间还原性CN交联来驱动邻官能化硝基芳烃转化成氮杂杂环与硼酸偶联,然后进行分子内环化。该方法能够从容易获得的结构单元快速构建氮杂杂环,包括针对N取代的苯并咪唑和喹喔啉二酮的区域特异性方法。