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- W1970953756 abstract "Titanium(IV) chloride-mediated reaction of 4,5-dihydro-2-(trimethylsiloxy)-3-(trimethylsilyl)furan (1a) with acetaldehyde gave diastereomerically pure (3S*, 1′R*)-4,5-dihydro-3-(1′hydroxyethyl)-3-(trimethylsilyl)-2(3H)furanone (2a), which afforded selectively either (Z)- or (E)-α-ethylidene-γ-butyrolactone (3a) under proper conditions. Facile isomerization of 2a into diastereomerically pure (3S*, 1′R*)-4,5-dihydro-3-&{1′-(trimethylsiloxy)ethyl}-2(3H)furanone (4) suggests an intriguing stereochemical outcome from 2a to (E)-3a via an enolate of 4." @default.
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- W1970953756 date "1980-01-01" @default.
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- W1970953756 title "Stereochemical consequence in the elimination of β-hydroxyalkylsilanes: Stereoselective formation of (Z)- and (E)-alkylidene-γ-butyrolactones" @default.
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- W1970953756 doi "https://doi.org/10.1016/s0040-4039(00)78628-x" @default.
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