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Syntheses of Hydroxylated Bipyridines, III. — Synthesis of Unsymmetrically and Symmetrically Structured Dihydroxybipyridines Fifteen symmetrical and asymmetrical dimethoxybipyridines and the pertinent diols are prepared and characterized. Reductive cross coupling of halopyridines with Ni(0) may result in complex mixtures. The same is true for an alternative reaction of (trimethylstannyl)pyridines with halopyridines in the presence of Pd(0). UV, 1H‐, and 13C‐NMR spectra of the bipyridine derivatives are tabulated.
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Dehmlow et al. (1992) studied this question.
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