作者:Florian Medina、Nathalie Duhal、Christophe Michon、Francine Agbossou-Niedercorn
DOI:10.1016/j.crci.2012.11.001
日期:2013.4
Résumé The catalyst-free reactions of activated alkenes with primary and secondary amines were investigated leading to various mono- and di-hydroamination products, the latter being rare and original. These reactions were shown to depend first on the strength of the nucleophile. Temperature and steric hindrance of the reagents were the other key factors controlling the selectivity of these aza-Michael reactions. In spite of their poor nucleophilicities, some N-heterocyclic amines could react with different activated alkenes affording valuable intermediates. Such results tended to demonstrate the hydrogen-bonding interactions between activated alkenes and poly-nitrogen aromatic cycles may control these concerted or fully conjugate aza-Michael additions. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.doc
简历
摘要
研究了活性烯烃与一级和二级胺的无催化剂反应,生成多种单氢胺化和双氢胺化产物,后者较为罕见且具有原创性。这些反应首先取决于亲核试剂的强度。温度和试剂的立体阻碍是控制这些氮杂迈克尔反应选择性的其他关键因素。尽管某些含氮杂环胺的亲核性较差,但它们仍能与不同的活性烯烃反应,生成有价值的中间体。这些结果倾向于表明,活性烯烃与多氮芳香环之间的氢键相互作用可能控制这些协同或完全共轭的氮杂迈克尔加成反应。
补充材料:
本文的补充材料以单独文件提供:
mmc1.doc