Stereoselective Synthesis of Tetrahydroquinolines via Asymmetric Domino Reaction Catalyzed by a Recyclable Ionic-Liquid-Supported Bifunctional Tertiary Amine
作者:Rinat S. Tukhvatshin、Alexander S. Kucherenko、Yulia V. Nelyubina、Sergei G. Zlotin
DOI:10.1002/ejoc.201801423
日期:2018.12.31
Asymmetric aza‐Michael/Michael domino reaction of N‐Ts or N‐Nos ortho‐aminochalcones with nitroolefins has been performed in the presence of highly recyclable (19 cycles) IL‐supported tertiary amine–squaramide organocatalyst to afford trisubstituted tetrahydro‐quinolines as single diastereomers with up to 99 % ee. N‐Nosylated products were converted to fused pirrolidino‐tetrahydroquinolines.