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US 2017/0283352 A1Published application
Method for producing an aroma substance
AssigneeBASF SE
InventorsThomas FENLON, Sumana CHATURVEDULA, Dominic RIEDEL, Stefan RÜDENAUER, Ralf PELZER, Pepa DIMITROVA, Florina Corina PATCAS, Manuel DANZ
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Abstract
A method of preparing a compound of formula (IV) where R1 is alkyl of 1 to 4 carbon atoms, comprises reacting cyclohexene with hydrogen peroxide and an alcohol R1OH in the presence of a catalyst comprising a zeolite of framework structure MWW, wherein the framework of the zeolite comprises silicon, titanium, boron, oxygen and hydrogen.
Claims16
1-15. (canceled)
A method of preparing a compound of formula (IV)
- wherein R1 is alkyl of 1 to 4 carbon atoms, comprising:
- (i) providing a liquid mixture comprising cyclohexene, an alcohol R1OH, hydrogen peroxide and optionally a solvent;
- (ii) reacting the cyclohexene with the hydrogen peroxide and the alcohol R1OH in the mixture provided as per (i) in the presence of a catalyst comprising a zeolite of framework structure MWW to obtain a mixture comprising the compound of formula (I)
- wherein the framework of the zeolite as per (ii) comprises silicon, titanium, boron, oxygen and hydrogen;
- (iii) separating the compound of formula (I) off from the mixture obtained as per (ii) to obtain a mixture concentrated in respect of the compound of formula (I);
- (iv) dehydrogenating the formula (I) compound present in the concentrated mixture obtained as per (iii) to obtain a mixture comprising a compound of formula (II)
- (v) formylating the formula (II) compound present in the mixture obtained as per (iv) to obtain a mixture comprising the compound of formula (IV).
4 more elements
Dependencies are inferred from the claim text.