Synthesis of Differently Disubstituted 2,2′‐Bipyridines by a Modified Negishi Cross‐Coupling Reaction

Abstract A general practical approach to a number of differently disubstituted 2,2′‐bipyridines from substituted 2‐bromo‐ and 2‐chloropyridines by application of modified Negishi cross‐coupling conditions has been developed. These 2,2′‐bipyridines carry versatile functional groups that can be elaborated further, as demonstrated for some examples. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)