A novel oxidative coupling enables site-specific C21 functionalization of 3-ethoxy Pdᴵᴵ N-confused porphyrins with βdiketones using PIFA. X-ray analysis confirms C-Pd bond formation and sp³-C21. The 3-ethoxy group is crucial, likely facilitating a highvalent Pd intermediate, revealing distinct reactivity from Ni analogs and new NCP insights.
J. Huang, W. Yang, S. Wen, Z. Zheng, X. Chen, X. Gan, L. Xu and H. Jiang, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC01372D
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