Waveform-Enhanced Alternating Current Electrocatalysis Enables Cu-Catalyzed Carbon–Oxygenation of β -Keto Carbonyls with Alkenes and Alkynes - Qinghong Yang; Linpu Zhou; Bufan Dang; Yeran Liu; Jianxing Wang; Xin Wang; Wei Ding; Zhiqiang Zhang; Yiheng Guo; Jiaxin Yuan; Heng Zhang; Hong Yi; et al. (Journal of the American Chemical Society, 2026)