Preparation of 2,6- and 2,7-disubstituted anthraquinone derivatives
AssigneeBASF SE
InventorsDominic Riedel, Joaquim Henrique Teles, Thomas Wurm
Life of this patent
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Abstract
The present invention relates to novel anthraquinone derivatives, 2,6-diisohexylanthracene-9,10-dione and 2,7-diisohexyl-anthracene-9,10-dione, preferably to be used for the preparation of hydrogen peroxide, and to a process for the preparation of these anthraquinone derivatives.
Claims23
A compound of formula (Ia)
A compound of formula (Ib)
A composition, comprising a compound of formula (Ia)
- and a compound of formula (Ib)
A solution, comprising a compound of formula (Ia)
- and/or a compound of formula (Ib)
- and a solvent.
A process for preparing a composition comprising a compound of formula (Ia)
- and a compound of formula (Ib)
- said process comprising:
- (i) providing a mixture comprising the compound of formula (IIa)
- and the compound of formula (IIb)
- and
- (ii) subjecting the mixture to a hydrogenation reaction.
A process for preparing hydrogen peroxide, the process comprising:
- preparing hydrogen peroxide from a compound selected from the group consisting of a compound of formula (Ia), a compound of formula (Ib), and a combination thereof:
A process for preparing hydrogen peroxide, the process comprising
- (I) providing a compound of formula (Ia)
- or a compound of formula (Ib)
- or a composition comprising the compound of formula (Ia) and the compound of formula (Ib);
- (II) preparing a mixture comprising the compound or the composition provided in (I) dissolved in an organic solvent, and further comprising a hydrogenation catalyst;
- (III) subjecting the mixture prepared in (II) to a hydrogenation reaction, thereby obtaining a mixture comprising a compound of formula (VIIa)
- or comprising a compound of formula (VIIb)
- or comprising the compound of formula (VIIa) and the compound formula (VIIb);
- (IV) subjecting the mixture obtained in (III) to an oxidation reaction in the presence of an oxygen containing gas, thereby obtaining a mixture comprising the compound of formula (Ia), or the compound of formula (Ib), or the compound of formula (Ia) and the compound of formula (Ib), and further comprising hydrogen peroxide;
- and
- (V) separating hydrogen peroxide from the mixture obtained in (IV), thereby obtaining a mixture comprising hydrogen peroxide and a mixture comprising the compound of formula (Ia), or the compound of formula (Ib), or the compound of formula (Ia) and the compound of formula (Ib).
Dependencies are inferred from the claim text.