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- W2950488974 abstract "Catalyzed by ammonium acetate, the Knoevenagel reactions of β-keto perfluoroalkanesulfones 1 with aromatic aldehydes 2 afforded α-perfluoroalkanesulfonyl-α,β-unsaturated ketones 4 in moderate to good yields. The possible mechanism for the reactions was proposed. These fluorine-containing α,β-unsaturated ketones, which are electron-poor 1-oxa-1,3-butadienes, could be used in inverse electron demand hetero Diels–Alder (HDA) reaction with electron-rich olefins to give tetrasubstituted dihydropyrans 6 in quantitative yields." @default.
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- W2950488974 date "2006-07-01" @default.
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- W2950488974 title "Synthesis and hetero-Diels–Alder reactions of (E)-α-perfluoroalkanesulfonyl-α,β-unsaturated ketones" @default.
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- W2950488974 doi "https://doi.org/10.1016/j.tetlet.2006.04.156" @default.
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