Cobalt-Catalyzed Formation of 2-Pyridylzinc Reagents and Their Subsequent Coupling

^◊ These authors contributed equally to this work.

Abstract

The preparation of pyridylzinc compounds from the corresponding pyridyl halides using a cobalt catalyst is described. The complex employed features a polydentate N-heterocyclic ligand and allows the reaction to be carried out in the absence of pyridine as co-solvent and also in THF in place of acetonitrile. First cross-coupling attempts are also presented. Satisfactory yields were obtained via a one-pot protocol without the addition of another catalyst.

Key words

cobalt catalysis - N-heterocyclic ligand - zinc - cross-coupling - pyridines

• References

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