An expedient one step synthesis of 4-alkyl-4′-methyl- and 4,4′-dialkyl-2,2′-bipyridines has been developed. The desired products are obtained, in good yields, by reaction of alkyl bromides with either the monoor dilithio-anion of 4,4′-dimethyl-2,2′-bipyridine.
C. G. Griggs and D. J. H. Smith, J. Chem. Soc., Perkin Trans. 1, 1982, 3041 DOI: 10.1039/P19820003041
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