Synthesis of<i>N</i>-Substituted Condensed Tetrahydropyridine-Based Enaminones<i>via</i>Palladium-Catalyzed Intramolecular C-N Cross-coupling
作者:Hana Doušová、Zdeňka Růžičková、Petr Šimůnek
DOI:10.1002/jhet.3085
日期:2018.3
A number of β‐enaminones with secondary amino group (alkyl, cyclopropyl, and aryl) were prepared from corresponding β‐diketones. Two general protocols for their palladium‐catalyzed intramolecular C–N cross‐coupling were established to give corresponding N‐substituted condensed tetrahydropyridines in good yields. The methodology is applicable for a wide variety of structural motifs. The work also extends
从相应的β-二酮制备了许多具有仲氨基的β-烯胺(烷基,环丙基和芳基)。建立了两种用于钯催化的分子内C–N交叉偶联的通用方案,可以以较高的收率得到相应的N-取代的缩合四氢吡啶。该方法适用于多种结构基序。这项工作还将新近建立的新型钯预催化剂的适用性扩展到新的基质上。