Negishi coupling of 2-pyridylzinc bromide-paradigm shift in cross-coupling chemistry?

The efficient cross-coupling of 2-pyridylzinc bromide with functionalized aryl halides has been accomplished by a simple and highly efficient protocol. To the best of our knowledge, we report the first shelf life study of 2-pyridylzinc bromide which confirms the excellent stability of this Compound and underlines the synthetic value of organozinc reagents in the cross-coupling reactions of sensitive heterocyclic nucleophiles on academic and commercial scale. (C) 2009 Published by Elsevier Ltd.