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- W3198442006 abstract "Abstract The first direct transition metal‐free access to 3,6‐disubstituted α ‐pyrones from α ‐chloro aldehydes and β ‐tosyl enones is reported. The reactions proceed via the Michael addition/lactonization/elimination cascade. The regioselective addition of NHC‐bound enolates/homoenolates to the enones bearing a bulkier functionality such as tosyl group at the β ‐position has remained challenging. The 3,6‐disubstituted α ‐pyrones could be converted to valuable products such as 1,2,3,4‐tetrasubstituted benzenes, 1,4‐disubstituted naphthalenes as well as anthracenes and 6,13‐disubstituted dihydro‐ethenopentacenes in a simple operation. magnified image" @default.
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- W3198442006 date "2021-09-07" @default.
- W3198442006 modified "2023-09-24" @default.
- W3198442006 title "Carbene Catalyzed Access to 3,6‐Disubstituted <i>α</i> ‐Pyrones via Michael Addition/Lactonization/Elimination Cascade" @default.
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- W3198442006 doi "https://doi.org/10.1002/adsc.202100760" @default.
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