Cu-Catalyzed Chemoselective Borylcupration of Borylated (Z)‑Skipped Dienoates: A Case Study for the Synthesis of gem-diborylcyclobutanes
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Chemoselective borylcupration of borylated (Z)-skipped dienoates is controlled by the ester group to access 3,3-di-(pinacol)-borylalkenoates. Electrophilic trapping with H+, D+, alkyl-, benzyl-, or allyl halides, as well as isocyanates has proved to be efficie... ...