Intramolecular Arylation of Tertiary Enamides through Pd(OAc)<sub>2</sub>-Catalyzed Dehydrogenative Cross-Coupling Reaction: Construction of Fused <i>N</i>-Heterocyclic Scaffolds and Synthesis of Isoindolobenzazepine Alkaloids
作者:Wenju Zhu、Shuo Tong、Jieping Zhu、Mei-Xiang Wang
DOI:10.1021/acs.joc.9b00010
日期:2019.3.1
Pd(OAc)2-catalyzed intramolecular dehydrogenative cross-coupling reaction between tertiary enamides, which were derived from the condensation of 2-arylethylamines and methyl o-acetylbenzoate, and arenes enabled synthesis of 7,8-dihydro-5H-benzo[4,5]azepino[2,1-a]isoindol-5-one derivatives under mild conditions. The synthetic method was applied in the total synthesis of aporhoeadane alkaloids palmanine
Pd(OAc)2催化叔烯酰胺之间的分子内脱氢交叉偶联反应,后者是由2-芳基乙胺与邻乙酰基苯甲酸甲酯的缩合反应生成的,而芳烃则可以合成7,8-二氢-5 H-苯并[4] ,5] azepino [2,1 - a ] isoindol-5-one衍生物在温和的条件下。该合成方法仅需三到四个步骤即可用于阿魏酸钠,生物碱棕榈碱,伦诺沙明和邻苯二胺的全合成。