Asymmetric Synthesis of Spiro[azetidine-3,3'-indoline]-2,2'-diones via Copper(I)-Catalyzed Kinugasa/C—C Coupling Cascade
Linxuan Wang, Zhenghu Xu
Chinese Journal of Organic Chemistry . 2022, (11): 3912 -3914 .  DOI: 10.6023/cjoc202200067