1. NHC-catalyzed [4+2] cycloaddition reactions for the synthesis of 3′-spirocyclic oxindoles via a C–F bond cleavage protocol. Issue 13 (18th December 2017) Authors: Yan, Jun; Shi, Kuangxi; Zhao, Chengtao; Ding, Liyuan; Jiang, Shengsheng; Yang, Limin; Zhong, Guofu Journal: Chemical communications Issue: Volume 54:Issue 13(2018) Page Start: 1567 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗