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- W2004853013 abstract "2-Methyl-4-(4-pyridyl)-3-butyn-2-ol (2) was prepared in 70% yield by the reaction of 4-bromopyridine with 2-methyl-3-butyn-2-ol in diethylamine in the presence of bis(triphenylphosphine)palladium(II) chloride and copper(I) iodide. Removal of the protective group in 2 by refluxing with sodium hydroxide in toluene yields (90%) 4-ethynylpyridine (3). Oxidative coupling of 3 in pyridine by dioxygen in the presence of copper(I) chloride produces a 92% yield of 1,4-bis(4-pyridyl)butadiyne." @default.
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- W2004853013 date "1984-03-01" @default.
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- W2004853013 title "Synthesis of 1,4-bis(4-pyridyl)butadiyne" @default.
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- W2004853013 doi "https://doi.org/10.1002/jhet.5570210268" @default.
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