by Andreas K. Steib, Olesya M. Kuzmina, Sarah Fernandez,
Dietmar Flubacher and Paul Knochel*
Low-toxicity chromium(II) chloride catalyzes at 25 °C within
minutes the coupling reactions of various (hetero)arylmagnesium reagents with N-heterocyclic
halides, aromatic halogenated ketones or imines, and alkenyl iodides.
Remarkably, much lower amounts of homo-coupling side products are obtained
compared to related iron, cobalt, or manganese cross-couplings.
Journal of the American Chemical Society
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