Catalytic Enantioselective Syntheses of Functionalized 3,3-Spirocyclopropyl Oxindoles and Vinylcyclopropanes via Ammonium Ylides Generated from α-Bromoketones
Luo Jinghua, Geng Weisheng, Cao Shixuan, He Zhengjie
Chinese Journal of Organic Chemistry . 2020, (1): 40 -52 .  DOI: 10.6023/cjoc201908034