We report herein the first copper-catalyzed intramolecular borylative cyclization of alkynes with imines, providing an efficient access to alkenyl boronate-containing indolines. Preliminary mechanistic studies suggested a nucleophilic addition process for the alkenyl copper-trapping step, in which the nucleophilicity of alkenyl copper was largely enhanced by formation of boron ate complexes.
T. Zhang, J. Gui, Y. Mo, Y. Pu, H. Zhao, Y. Liu and C. He, Chem. Commun., 2025, Accepted Manuscript , DOI: 10.1039/D5CC00679A
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