Highly Selective Synthesis of 2-Amino-4,6-diarylpyridine Derivatives by the Cascade Reaction of 1,1-Enediamines with α,β-Unsaturated Ketones
作者:Qin Luo、Rong Huang、Qiang Xiao、Yuan Yao、Jun Lin、Sheng-Jiao Yan
DOI:10.1021/acs.joc.8b03008
日期:2019.2.15
6-diarylpyridine derivatives 4–6 through the cascade reaction, which includes Michael addition, intramolecular cyclization, aromatization, and/or loss of HNO2, of different types of α,β-unsaturated ketones 1 and 1,1-enediamines 2 and 3 in 1,4-dioxane promoted by the base Cs2CO3 or piperidine. This method is suitable for the efficient parallel synthesis of pyridines. A library of highly functional 2-amino-4
的一般和简洁的方法是为2-氨基-4,6- diarylpyridine衍生物的合成开发4 - 6通过级联反应,其包括迈克尔加成,分子内环化,芳构化,和/或HNO的损失2,不同类型的碱Cs 2 CO 3或哌啶促进的1,4-二恶烷中的α,β-不饱和酮1和1,1-二烯胺2和3的形成。该方法适合于吡啶的有效平行合成。使用本研究中描述的级联反应,可以轻松构建具有高度功能的2-氨基-4,6-二芳基吡啶衍生物的库。