摘要
目前对亚甲基苯醌参与的1,6-共轭加成反应的研究主要集中在对预先合成的δ-单取代底物进行三级碳中心的构建.报道了一级芳胺对预先制备的δ氰基-δ-芳基二取代对亚甲基苯醌的1,6-氮杂共轭加成反应,高效地合成了一系列含有四级碳手性中心的大位阻胺类化合物.该方法条件温和、反应迅速,同时芳胺和对亚甲基苯醌的适用范围广泛.此外,环状二级胺例如吗啉和咪唑也是合适的亲核试剂.
Current 1,6-conjugate addition typically focused on pre-synthesized para-quinone methides bearing a δ-mono substituent for tertiary stereocenter formation. Here, an efficient 1,6-aza-conjugate addition of primary anilines to pre-prepared δ-CN-δ-aryl disubstituted para-quinone methides for facile access to sterically hindered amines with a fully substituted α-carbon center has been described. The mild and expeditious method exhibited broad scopes of both aniline and para-quinone methide components. The generality of the method in modular preparation of medicinally valuable, sterically hindered amines was further demonstrated by using cyclic secondary amines like morpholine and imidazole as nucleophilic components.
作者
王琳
王楠
齐越
孙书涛
刘希功
李伟
刘磊
Wang Lin;Wang Nan;Qi Yue;Sun Shutao;Liu Xigong;Li Wei;Liu Lei(Department of Pharmaceutical Analysis,School of Pharmacy,Shandong University of Traditional Chinese Medicine,Jinan 250355;School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100;The First Ward of Intervention Department,Shandong Cancer Hospital and Institute,Shandong First Medical University and Shandong Academy of Medical Sciences,Jinan 250117)
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2020年第11期3934-3943,M0014,共11页
Chinese Journal of Organic Chemistry
基金
国家自然科学基金(Nos.21722204,21971148)资助项目.
