Photoinduced Copper-Catalyzed Site- and Stereoselective Desymmetrizing β-C(sp 3 )-H Alkynylation of Cycloalkyl Amines - Chunxiang Pan; Cuihuan Geng; Guanghui Meng; Yan Huang; Yujiao Ma; Mengxia Liao; Junying Xiao; Chenwei Wang; Kuili Liang; Zhengze Wu; Xiaotian Qi; Guozhu Zhang; et al. (Journal of the American Chemical Society, 2026)