ChemInform Abstract: Construction of Spirocyclic Oxindoles Through Regio‐ and Stereoselective [3 + 2] or [3 + 2]/[4 + 2] Cascade Reaction of α, β‐Unsaturated Imines with 3‐Isothiocyanato Oxindole. Issue 29 (June 2016) - Du, Dan; Xu, Qin; Li, Xiao‐Ge; Shi, Min