Xuan-Ge Zhang, Jun-Jia Chen, Meng-Chun Ye, Xiao-Hua Liu, Qi-Lin Zhou. "Chiral Isourea-Catalyzed Enantioselective Carbene Insertion into an N–H Bond through a Double Proton-Transfer Process." Journal of the American Chemical Society, 2026. doi:10.1021/jacs.6c01890