Palladium-Catalyzed Dual Annulation: A Method for the Synthesis of Norneocryptolepine
作者:Li-Hsuan Yeh、Hung-Kai Wang、Gangaram Pallikonda、Yu-Lun Ciou、Jen-Chieh Hsieh
DOI:10.1021/acs.orglett.9b00287
日期:2019.3.15
Pd-catalyzed dual annulation reaction to synthesize the norneocryptolepine derivatives involving the concerted construction of two central heterocycles is reported. The further methylation of the norneocryptolepine to afford its alkaloid analog neocryptolepine implies that synthesis of various neocryptolepine derivatives is feasible. The oxidative addition of Pd(0) is indicated as the key step to activate the
报道了一种新型的钯催化双环合反应合成壬基隐油菜碱衍生物的新方法,该过程涉及两个中心杂环的协同构建。去甲隐油菜籽进一步的甲基化以提供其生物碱类似物新隐油菜籽暗示了各种新隐油菜籽衍生物的合成是可行的。根据机理研究表明,Pd(0)的氧化加成是激活腈分子内加成的关键步骤。