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Haas, Diana; Hammann, Jeffrey M.; Lutter, Ferdinand H.; Knochel, Paul (2016): Mild Cobalt-Catalyzed Negishi Cross-Couplings of (Hetero)arylzinc Reagents with (Hetero)aryl Halides. In: Angewandte Chemie-international Edition, Vol. 55, No. 11: pp. 3809-3812
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A catalytic system consisting of CoCl(2)2LiCl (5mol%) and HCO2Na (50mol%) enables the cross-coupling of various N-heterocyclic chlorides and bromides as well as aromatic halogenated ketones with various electron-rich and -poor arylzinc reagents. The reactions reached full conversion within a few hours at 25 degrees C.