Process for the preparation of oxovinylionol and its O-protected derivatives
AssigneeBASF SE
InventorsHansgeorg Ernst, Michael Puhl, Stefan Benson, Wolfgang Siegel
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Abstract
The present invention relates to the preparation of oxovinylionol and its O-protected derivatives of the formula I in which R is hydrogen or an OH protecting group, for example a group Si(Ra)3, by reacting a compound of the general formula II in which R has the meanings given above for formula I, i.e. β-vinyl ionol (formula II, R=hydrogen) or an O-protected derivative thereof (formula II, R═OH protecting group) with an oxidant in the presence of at least one transition metal, where the oxidant comprises at least one oxygen-containing compound which is selected from among hydrogen peroxide and organic hydroperoxides.
Claims18
A process for the preparation of oxovinylionol and its O-protected derivatives of the formula I
- in which R is hydrogen or an OH protecting group, wherein β-vinyl ionol or an O-protected derivative thereof of the formula II in which R has the above mentioned meanings is reacted with an oxidant in the presence of at least one transition metal selected from the group consisting of Cu, Co, Fe, Mn, and mixtures thereof, where the oxidant comprises at least one oxygen-containing compound selected from among hydrogen peroxide and organic hydroperoxides.
Dependencies are inferred from the claim text.