Open AccessCCS ChemistryRESEARCH ARTICLE1 Jul 2021Asymmetric Spirocyclization Enabled by Iridium and Brønsted Acid-Catalyzed Formal Reductive Cycloaddition Nan-Fang Mo†, Le Yu†, Ying Zhang, Ya-Hong Yao, Xun Kou, Zhi-Hui Ren Zheng-Hui Guan Mo† Key Laboratory of Synthetic Natural Functional Molecule Ministry Education, Department Chemistry & Materials Science, Northwest University, Xi’an 710127 †...