Organocatalytic double arylation of 3-isothiocyanato oxindoles: Stereocontrolled synthesis of complex spirooxindoles
作者:Lin-Lin Zhang、Bing-Chao Da、Shao-Hua Xiang、Shuai Zhu、Zi-Yun Yuan、Zhen Guo、Bin Tan
DOI:10.1016/j.tet.2018.11.016
日期:2019.3
employed as the electrophiles for the organocatalyticMichael addition/cyclization cascade reaction with versatile 3-isothiocyanato oxindoles. Chiral bifunctional organocatalyst was appropriate for this enantioselective transformation to afford a variety of novel spirooxindoles, possessing a spirocyclic stereocenter adjacent to the aromatic ring, via asymmetricdouble arylation. These synthesized spirooxindoles