期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 70, 期 24, 页码 9835-9840出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo051586g
关键词
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Reaction of 6,6'-dibromo-2,2'-bipyridine with phenylphosphine under palladium-promoted cross-coupling conditions provides a variety of linear oligomers bearing two reactive bromo substituents as well as a cyclic dimer, characterized by X-ray crystallography, in which the bipyridine units are constrained to a cis configuration by two phenylphosphine oxide bridges. Derivatives of the linear species containing both carboxylate and phosphonate substituents are readily obtained.
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