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Hammann, Jeffrey M.; Lutter, Ferdinand H.; Haas, Diana; Knochel, Paul (2017): A Robust and Broadly Applicable Cobalt-Catalyzed Cross-Coupling of Functionalized Bench-Stable Organozinc Pivalates with Unsaturated Halides. In: Angewandte Chemie-international Edition, Vol. 56, No. 4: pp. 1082-1086
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Abstract

We report a robust and broadly applicable CoCl2-catalyzed cross-coupling between functionalized aryl and heteroaryl zinc pivalates and various electron-poor aryl and heteroaryl halides (X = Cl, Br, I). Couplings with (E)- or (Z)-bromo- or iodo-alkenes proceed with retention of configuration. Also, alkynyl bromides react with arylzinc pivalates providing arylated alkynes.