Cascade C-C and C-N Bond Formation: A Straightforward Synthesis of Phenanthridines and Fused Quinolines
作者:Ashwini Borah、Pranjal Gogoi
DOI:10.1002/ejoc.201600220
日期:2016.4
Pd-catalyzed cascade process has been developed for the synthesis of quinoline and phenanthridine derivatives from various β-chloro α,β-unsaturated aldehydes and 2-chloroaryl aldehydes, respectively, in good to high yields. The reaction proceeds through Pd-catalyzed cascade carbon–carbon and carbon–nitrogen bond formation in a single reaction vessel. The requisite β-chloro α,β-unsaturated aldehydes were efficiently
已经开发了一种 Pd 催化的级联工艺,用于分别从各种 β-氯 α,β-不饱和醛和 2-氯芳基醛合成喹啉和菲啶衍生物,收率良好。该反应通过 Pd 催化的级联碳 - 碳和碳 - 氮键在单个反应容器中形成。必需的β-氯α,β-不饱和醛是由相应的羰基化合物有效合成的。配体 Sphos 与 Pd(OAc)2 的使用对于本级联工艺的成功实施至关重要。该合成方案也适用于三球定生物碱的克级合成。