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- W2030787900 abstract "Abstract Superbase-catalyzed (KOH/DMSO suspension as a catalyst) vinylation of hydroxymethyl- and hydroxyethylferrocenes with terminal and internal alkynes (acetylene, propyne, phenylacetylene, 3-ethynylpyridine, 1-propyn-1-yl-benzene, diphenylacetylene) affords hitherto unknown vinyl ethers of ferrocene in 30–93% yields depending on the alkyne structure and the tuneable ratio of reactants/KOH/DMSO. The vinylation smoothly proceeds under mild conditions (70–90 °C, 0.25–13 h). With unsubstituted acetylene the process is readily realized under atmospheric pressure (yield of the corresponding vinyl ethers is 81–90%) though under pressure (initial pressure at room temperature is 10–13 atm, maximum pressure is 13–16 atm at the reaction temperature) the yield is close to quantitative (93%). The synthesized compounds were characterized using 1H and 13C NMR, and IR spectroscopy, as well as X-ray diffraction analysis." @default.
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- W2030787900 date "2014-09-01" @default.
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- W2030787900 title "Tuneable superbase-catalyzed vinylation of α-hydroxyalkylferrocenes with alkynes" @default.
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- W2030787900 doi "https://doi.org/10.1016/j.tet.2014.06.010" @default.
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