Hexafluoropropene oxide reacts smoothly with morpholine enamines from ketones and aldehydes at 0 °C to room temperature in anhydrous THF to give pentafluorinated 1,3-diketones in good yields. The keto-enol equilibrium in the products is generally in favor of their enol form.
Morpholinenamine (I), (IV) und (VI), die aus Ketonen und Aldehyden nach Literaturmethoden dargestellt wurden, reagieren mit Hexafluorpropylenepoxid (II) zu den perfluorierten Titelverbindungen (III), (V) und (VII).
Durch Umsetzung der Ketendithioacetale (III) mit dem Adduktgemisch (I) und (II) aus Amin und Hexafluorpropen werden die Oxo‐ 52 ketendithioacetal‐ Derivate (IV) neben (V) hergestellt.
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