Method for producing terpene aldehydes and terpene ketones
AssigneeSymrise AG
InventorsAnna Kulik, Reinhard Eckelt, Angela Köckritz, Katja Neubauer
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Abstract
The invention relates to a method for producing terpene aldehydes and terpene ketones by oxidatively dehydrogenating the corresponding terpene alcohols, comprising or consisting of the following steps: (a) providing terpene alcohols or terpene-alcohol-containing reactants; (b) bringing the starting substances from step (a) in contact with a heterogeneous ruthenium catalyst; (c) heating the mixture from step (b) to at least 150° C. in the presence of oxygen; optionally (d) separating the terpene aldehydes or terpene ketones from the obtained reaction mixture.
Claims18
A method for producing terpene ketones by oxidative dehydrogenation of the corresponding terpene alcohols, the method comprising:
- bringing starting materials comprising terpene alcohols or terpene alcohol-containing reactants into contact with a heterogeneous ruthenium catalyst to form a mixture;
- heating the mixture at a temperature of about 180 to about 320° in the presence of oxygen to form a reaction mixture;
- and optionally
- separating the terpene ketones from the resulting reaction mixture,
- wherein a reaction to form the reaction mixture is carried out in a reactor through which a gas stream flows continuously, said gas stream comprising at least one terpene alcohol and an oxygen-containing gas and optionally an inert gas when entering the reactor.
A method for producing terpene aldehydes and terpene ketones by oxidative dehydrogenation of the corresponding terpene alcohols, the method comprising:
- bringing starting materials comprising terpene alcohols or terpene alcohol-containing reactants into contact with a heterogeneous ruthenium catalyst of type RuMnCe/CeO2;
- heating the mixture to at least 150° C. in the presence of oxygen to form a reaction mixture;
- and optionally
- separating the terpene aldehydes or terpene ketones from the resulting reaction mixture.
A method for producing terpene aldehydes and terpene ketones by oxidative dehydrogenation of the corresponding terpene alcohols, the method comprising:
- bringing starting materials comprising menthol or a menthol-containing reactant into contact with a heterogeneous ruthenium catalyst to form a mixture;
- heating the mixture to at least 150° C. in the presence of oxygen to form a reaction mixture;
- and optionally
- separating the menthone from the resulting reaction mixture.
Dependencies are inferred from the claim text.