The present invention relates to the compound 2-ethyl-5,5-dimethyl-cyclohexanol, which can impart, modify and/or enhance one or more odours selected from the group consisting of minty, fresh tobacco leaf, cresol, horse and animalistic, mixtures comprising 2-ethyl-5,5-dimethyl-cyclohexanol, and a new method for producing the same, a fragrance composition comprising 2-ethyl-5,5-dimethyl-cyclohexanol, the use of 2-ethyl-5,5-dimethyl-cyclohexanol as a fragrance, particularly for imparting, modifying and/or enhancing one or more odours selected from the group consisting of minty, fresh tobacco leaf, cresol, horse and animalistic, a perfumed product comprising 2-ethyl-5,5-dimethyl-cyclohexanol, a method for perfuming such a product and a method for modifying an olfactory impression.

A method of preparing a compound of Formula (I) comprising reacting the compound of Formula (A) with a base and a compound of Formula (B) to yield a compound of Formula (C).

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A method of preparing a compound of Formula (I) comprising reacting the compound of Formula (A) with a base and a compound of Formula (B) to yield a compound of Formula (C).

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The present invention relates to new classes of odorous alcohols (odorants) derived from 2,3-dimethylbutene which are useful as fragrance or flavor materials in particular in providing natural piney olfactory notes with a complex profile to perfume, aroma or deodorizing/masking compositions.

The present invention relates to new classes of odorous alcohols (odorants) derived from 2,3-dimethylbutene which are useful as fragrance or flavor materials in particular in providing natural piney olfactory notes with a complex profile to perfume, aroma or deodorizing/masking compositions.

A method for making cyclopentadiene fuels comprising producing cyclopent-2-en-1-one or a mixture of cyclopent-2-en-1-one from a bio-based source. The cyclopent-2-en-1-one or the mixture of cyclopent-2-en-1-one is hydrogenated, thereby forming cyclopent-2-en-1-ol or a mixture of cyclopent-2-en-1-ol. The cyclopent-2-en-1-ol or the mixture of cyclopent-2-en-1-ol is dehydrated with a dehydrating agent, thereby forming cyclopentadiene or a mixture of cyclopentadiene. The cyclopentadiene or mixture of cyclopentadiene is converted to dicyclopentadiene or dihydrodicyclopentadiene. The dicyclopentadiene or dihydrodicyclopentadiene is hydrogenated, thereby forming tetrahydrodicyclopentadiene. The tetrahydrodicyclopentadiene is isomerized, thereby forming exo-tetrahydrodicyclopentadiene.

A method for making cyclopentadiene fuels comprising producing cyclopent-2-en-1-one or a mixture of cyclopent-2-en-1-one from a bio-based source. The cyclopent-2-en-1-one or the mixture of cyclopent-2-en-1-one is hydrogenated, thereby forming cyclopent-2-en-1-ol or a mixture of cyclopent-2-en-1-ol. The cyclopent-2-en-1-ol or the mixture of cyclopent-2-en-1-ol is dehydrated with a dehydrating agent, thereby forming cyclopentadiene or a mixture of cyclopentadiene. The cyclopentadiene or mixture of cyclopentadiene is converted to dicyclopentadiene or dihydrodicyclopentadiene. The dicyclopentadiene or dihydrodicyclopentadiene is hydrogenated, thereby forming tetrahydrodicyclopentadiene. The tetrahydrodicyclopentadiene is isomerized, thereby forming exo-tetrahydrodicyclopentadiene.

A chiral catalyst represented by formula (II) is provided. In formula (II), Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, C.sub.mH.sub.2m+1 or OC.sub.mH.sub.2m+1, wherein m=1-10 and n=1-10. A heterogeneous chiral catalyst is also provided. The heterogeneous chiral catalyst includes the chiral catalyst represented by formula (II), and a substrate connected to the chiral catalyst. ##STR00001##

A chiral catalyst represented by formula (II) is provided. In formula (II), Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, C.sub.mH.sub.2m+1 or OC.sub.mH.sub.2m+1, wherein m=1-10 and n=1-10. A heterogeneous chiral catalyst is also provided. The heterogeneous chiral catalyst includes the chiral catalyst represented by formula (II), and a substrate connected to the chiral catalyst. ##STR00001##

A chiral catalyst represented by formula (II) is provided. In formula (II), Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, C.sub.mH.sub.2m+1 or OC.sub.mH.sub.2m+1, wherein m=1-10 and n=1-10. A heterogeneous chiral catalyst is also provided. The heterogeneous chiral catalyst includes the chiral catalyst represented by formula (II), and a substrate connected to the chiral catalyst.

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