Catalytic Asymmetric Dearomatization of Indolyl Dihydropyridines through an Enamine Isomerization/Spirocyclization/Transfer Hydrogenation Sequence
作者:Zi-Lei Xia、Chao Zheng、Shou-Guo Wang、Shu-Li You
DOI:10.1002/anie.201712435
日期:2018.3.1
A highly efficient synthesis of enantioenriched spiroindolines by catalyticasymmetric dearomatization of indolyl dihydropyridines through a chiral phosphoric acid catalyzed enamine isomerization/spirocyclization/transferhydrogenation sequence has been developed. This reaction proceeds under mild reaction conditions, affording novel spiroindolines in good yields (up to 88 %) with excellent enantioselectivity