A new and practical approach to a number of differently 5-substituted 2,2′-bipyridines starting from substituted 2-chloropyridines has been found through the application of modified Negishi cross-coupling conditions. (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)
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Lützen et al. (2002) studied this question.