ChemInform Abstract: Organocatalytic Asymmetric Cascade Michael/Hemiketalization/Retro‐Aldol Reaction of 3‐Acetyl‐oxindole with β, γ‐Unsaturated Ketoesters Catalyzed by Bifunctional Amino‐Squaramides. Issue 14 (April 2015) - Zhou, Jing; Jia, Li‐Na; Wang, Qi‐Lin; Peng, Lin; Tian, Fang; Xu, Xiao‐Ying; Wang, Li‐Xin