Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C35/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring
  • C07C35/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic
  • C07C35/08—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing a six-membered rings
  • C07C35/18—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing a six-membered rings with unsaturation at least in the ring
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q13/00—Formulations or additives for perfume preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/10—Washing or bathing preparations
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
  • C11B9/00—Essential oils; Perfumes
  • C11B9/0007—Aliphatic compounds
  • C11B9/0015—Aliphatic compounds containing oxygen as the only heteroatom
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
  • C11B9/00—Essential oils; Perfumes
  • C11B9/0026—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring
  • C11B9/0034—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring the ring containing six carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2601/00—Systems containing only non-condensed rings
  • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
  • C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated

Definitions

• the present invention relates to 6-isopropyl-2,4-dimethylcyclohexen-1 -ol derivatives having green, very impactful odor notes, and to their use as flavor and fragrance ingredient and to compositions and products comprising them. It furthermore relates to a method of their production.
• Green odor characteristics are important scents in perfumery. Albeit a wide range of compounds possessing green odor notes are known, there is a constant demand for new compounds that enhance, modify or improve on odor notes.
• the compounds of formula (I) as defined hereinabove contains three stereocenters, and as such exist as mixtures of stereoisomers. They can be used as stereoisomeric mixtures, or may be resolved in diasteromerically and / or enantiomerically pure form. Resolving stereoisomers adds to the complexity of manufacture and purification of these compounds, and so it is preferred to use the compounds as mixtures of their stereoisomers simply for economic reasons. However, if it is desired to prepare individual stereoisomers, this may be achieved according to methodology known in the art, e. g. preparative HPLC and GC or by stereoselective syntheses.
• the compound of formula (I) may be used alone, as stereoisomeric mixture, or in combination with a base material.
• the 'base material' includes all known odorant molecules selected from the extensive range of natural products, and synthetic molecules currently available, such as essential oils, alcohols, aldehydes and ketones, ethers and acetals, esters and lactones, macrocycles and heterocycles, and/or in admixture with one or more ingredients or excipients conventionally used in conjunction with odorants in fragrance compositions, for example, carrier materials, and other auxiliary agents commonly used in the art.
• auxiliary agent refers to ingredients that might be employed in a fragrance composition for reasons not specifically related to the olfactive performance of said composition.
• an auxiliary agent may be an ingredient that acts as an aid to processing a fragrance ingredient or ingredients, or a composition containing said ingredient(s), or it may improve handling or storage of a fragrance ingredient or composition containing same. It might also be an ingredient that provides additional benefits such as imparting color or texture. It might also be an ingredient that imparts light resistance or chemical stability to one or more ingredients contained in a fragrance composition.
• a detailed description of the nature and type of adjuvants commonly used in fragrance compositions containing same cannot be exhaustive, but it has to be mentioned that said ingredients are well known to a person skilled in the art.
• 'fragrance composition means any composition comprising the compound of formula (I) and a base material, e.g. a diluent conventionally used in conjunction with odorants, such as diethyl phthalate (DEP), dipropylene glycol (DPG), isopropyl myristate (IPM), triethyl citrate (TEC) and alcohol (e.g. ethanol).
• a base material e.g. a diluent conventionally used in conjunction with odorants, such as diethyl phthalate (DEP), dipropylene glycol (DPG), isopropyl myristate (IPM), triethyl citrate (TEC) and alcohol (e.g. ethanol).
• DEP diethyl phthalate
• DPG dipropylene glycol
• IPM isopropyl myristate
• TEC triethyl citrate
• alcohol e.g. ethanol
• the composition may comprise an anti-oxidant adjuvant
• Said anti-oxidant may be selected from Tinogard ® TT (BASF), Tinogard ® Q (BASF), Tocopherol (including its isomers, CAS 59-02-9; 364-49-8; 18920-62-2; 121854-78-2), 2,6-bis(1 ,1 -dimethylethyl)- 4-methylphenol (BHT, CAS 128-37-0) and related phenols, hydroquinones (CAS 121 - 31 -9).
• oils and extracts e.g. castoreum, costus root oil, oak moss absolute, geranium oil, tree moss absolute, basil oil, fruit oils, such as bergamot oil and mandarine oil, myrtle oil, palmarose oil, patchouli oil, petitgrain oil, jasmine oil, rose oil, sandalwood oil, wormwood oil, lavender oil and/ or ylang-ylang oil;
• cinnamic alcohol ((E)-3-phenylprop-2-en-1 -ol); cis-3-hexenol ((Z)- hex-3-en-1 -ol); citronellol (3,7-dimethyloct-6-en-1 -ol); dihydro myrcenol (2,6- dimethyloct-7-en-2-ol); EbanolTM ((E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en- 1 -yl)pent-4-en-2-ol); eugenol (4-allyl-2-methoxyphenol); ethyl linalool ((E)-3,7- dimethylnona-1 ,6-dien-3-ol); farnesol ((2E,6Z)-3, 7,1 1 -trimethyldodeca-2, 6,10- trien-1 -ol); geraniol ((E)-3-phenylprop-2-
• phenyl ethyl alcohol (2-phenylethanol); RhodinolTM (3,7-dimethyloct-6-en-1 -ol);
• SandaloreTM (3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1 -yl)pentan-2-ol);
• terpineol (2-(4-methylcyclohex-3-en-1 -yl)propan-2-ol); or TimberolTM (1 -(2,2,6- trimethylcyclohexyl)hexan-3-ol); 2,4,7-trimethylocta-2,6-dien-1 -ol, and/or [1 - methyl-2(5-methylhex-4-en-2-yl)cyclopropyl]-methanol; - aldehydes and ketones, e.g.
• anisaldehyde (4-methoxybenzaldehyde); alpha amyl cinnamic aldehyde (2-benzylideneheptanal); GeorgywoodTM (1 -(1 ,2, 8,8- tetramethyl-1 ,2,3,4,5,6,7,8-octahydronaphthalen-2-yl)ethanone);
• Hydroxycitronellal (7-hydroxy-3,7-dimethyloctanal); Iso E Super ® (1 -(2,3,8,8- tetramethyl-1 ,2,3,4,5,6,7,8-octahydronaphthalen-2-yl)ethanone); Isoraldeine ® ((E)-3-methyl-4-(2,6,6-trimethylcyclohex-2-en-1 -yl)but-3-en-2-one); Hedione ® (methyl 3-oxo-2-pentylcyclopentaneacetate); 3-(4-isobutyl-2- methylphenyl)propanal; maltol; methyl cedryl ketone; methylionone; verbenone; and/or vanillin;
• esters and lactones e.g. benzyl acetate; cedryl acetate ((1 S,6R,8aR)-1 ,4,4,6- tetramethyloctahydro-1 H-5,8a-methanoazulen-6-yl acetate); ⁇ -decalactone (6- pentyltetrahydro-2H-pyran-2-one); Helvetolide ® (2-(1 -(3,3- dimethylcyclohexyl)ethoxy)-2-methylpropyl propionate); ⁇ -undecalactone (5- heptyloxolan-2-one); and / or vetiveryl acetate ((4,8-dimethyl-2-propan-2- ylidene-3,3a,4,5,6,8a-hexahydro-1 H-azulen-6-yl) acetate);
• macrocycles e.g. Ambrettolide ((Z)-oxacycloheptadec-10-en-2-one); ethylene brassylate (1 ,4-dioxacycloheptadecane-5,17-dione); and / or Exaltolide ® (16- oxacyclohexadecan-1 -one); and heterocycles, e.g. isobutylquinoline (2-isobutylquinoline).
• Ambrettolide (Z)-oxacycloheptadec-10-en-2-one
• ethylene brassylate (1 ,4-dioxacycloheptadecane-5,17-dione
• Exaltolide ® (16- oxacyclohexadecan-1 -one
• heterocycles e.g. isobutylquinoline (2-isobutylquinoline).
• fragrance ingredients with which 2,4,7-trimethyloct-6-en-1 - ol may be combined include 6-methoxy-2,6-dimethylheptan-1 -al (Methoxymelonal) ; 5,9-dimethyl-4,8-decadienal (Geraldehyde); octahydro-8,8-dimethylnaphthalene-2- carbaldehyde (Cyclomyral) ; 5-methyl-2-(1 -methylbutyl)-5-propyl-1 ,3-dioxan (Troenan); 3,7,1 1 -trimethyldodeca-1 , 6,10-trien-3-ol (optionally as an isomeric mixture) (Nerolidol);
• fragrance ingredients may include Amyl Salicylate (pentyl 2-hydroxybenzoate); Aurantiol ® ((E)-methyl 2-((7-hydroxy-3,7- dimethyloctylidene)amino)benzoate); Benzyl Salicylate (benzyl 2-hydroxybenzoate); Cis-3-hexenyl Salicylate ((Z)-hex-3-en-1 -yl 2-hydroxybenzoate); Citronellyl
• Oxyacetaldehyde (2-((3,7-dimethyloct-6-en-1 -yl)oxy)acetaldehyde); Cyclemax (3-(4- propan-2-ylphenyl)propanal); Cyclohexyl Salicylate (cyclohexyl 2-hydroxybenzoate); Cyclomyral ® (8,8-dimethyl-1 ,2,3,4,5,6,7,8-octahydronaphthalene-2-carbaldehyde); Cyclopentol (2-pentylcyclopentan-1 -ol); Cymal (4-(4-hydroxy-4-methylpentyl)cyclohex-
• Phenoxanol ® (3-methyl-5-phenylpentan-1 -ol); Rossitol ® (3-isobutyl-1 - methylcyclohexanol); Suzaral (2-methyl-3-[4-(2-methylpropyl)phenyl]propanal); Muguol (3,7-dimethylocta-4,6-dien-3-ol); Tetrahydro Linalool (3,7-dimethyloctan-3-ol); Acalea ((2E)-2-[(4-methylphenyl)methylidene]-heptanal); Dihydro IsoJasmonate (methyl 2- hexyl-3-oxocyclopentane-1 -carboxylate); Hexyl Cinnamic Aldehyde ((E)-2- benzylideneoctanal); Acetoin (3-hydroxybutan-2-one); Adoxal (2,6,10-trimethylundec-9 enal
• Cetalox ® (3a,6,6,9a-tetramethyl-2,4,5,5a,7,8,9,9b-octahydro-1 H- benzo[e][1 ]benzofuran); Cinnamic alcohol ((E)-3-phenylprop-2-en-1 -ol); Citral ((E)-3,7- dimethylocta-2,6-dienal); Cyclabute ((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro-1 H-4,7- methanoinden-6-yl isobutyrate); CyclacetTM ((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro- 1 H-4,7-methanoinden-6-yl acetate); Cyclaprop ((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro 1 H-4,7-methanoinden-6
• fragrance composition need not be limited to the fragrance ingredients listed above.
• Other fragrance ingredients commonly used in perfumery may be employed, for example any of those ingredients described in "Perfume and Flavour Chemicals", S. Arctander, Allured Publishing Corporation, 1994, IL, USA, which is incorporated herein by reference, including essential oils, plant extracts, absolutes, resinoids, odorants obtained from natural products and the like.
• compounds of formula (I) as hereinabove defined may be combined with other alcohols, such as (£)/(Z)-2,4,7-trimethyloct-6-en-1 -ol, (£)/(2)-2,4,7-trimethylocta-2,6-dien-1 -ol, (£)/(Z)- 2,4,7-trimethylocta-3,6-dien-1 -ol, 2,4,7-trimethyloctan-1 -ol (odor description: floral, green, rosy), dihydromyrcenol, linalool, and ethyl linalool, and mixtures thereof.
• this combination of formula (I) compounds with other alcohols may additionally be combined with other ingredients possessing a green odor characteristics, such as bis((3-methylbut-2-en-1 -yl)
• the compound according to formula (I) may be used in a broad range of fragranced articles, e.g. in any field of fine and functional perfumery, such as perfume, Eau de perfume, Eau de Cologne, Eau de Toilette, air care products, household products, laundry and fabric care products, body care products and cosmetics.
• the compounds can be employed in widely varying amounts, depending upon the specific application and on the nature and quantity of other fragrance ingredients.
• the proportion is typically from 0.00001 to 30 (including, e.g. 0.001 , 0.001 , 0.01 , 0.1 , 0.5, 0.75, 1 , 2, 5, 10, 15, 20, 25) weight per cent of the article.
• the compound of the present invention may be employed in a fabric softener in an amount from 0.0001 to 0.3 weight per cent.
• the compound of the present invention may be used in fine perfumery in amounts from 0.001 to 30 weight per cent (e.g. up to about 10 or up to 20 weight per cent), more preferably between 0.01 and 5 weight per cent.
• these values are given only by way of example, since the experienced perfumer may also achieve effects or may create novel accords with lower or higher concentrations.
• the compounds of formula (I) as described hereinabove may be employed in a consumer product base simply by directly mixing the compound of formula (I), or a fragrance composition with the consumer product base, or it may, in an earlier step, be entrapped with an entrapment material, for example, polymers, capsules,
• microcapsules and nanocapsules liposomes, film formers, absorbents such as carbon or zeolites, cyclic oligosaccharides and mixtures thereof, or it may be chemically bonded to substrates, which are adapted to release the fragrance molecule upon application of an external stimulus such as light, enzyme, oxygen, or the like, and then mixed with the consumer product base.
• an external stimulus such as light, enzyme, oxygen, or the like
• the invention additionally provides a method of manufacturing a fragranced article, comprising the incorporation of a compound of formula (I), as a fragrance ingredient, either by directly admixing the compound to the consumer product base or by admixing a fragrance composition comprising the compound of formula (I), which may then be mixed with a consumer product base, using conventional techniques and methods.
• a method of manufacturing a fragranced article comprising the incorporation of a compound of formula (I), as a fragrance ingredient, either by directly admixing the compound to the consumer product base or by admixing a fragrance composition comprising the compound of formula (I), which may then be mixed with a consumer product base, using conventional techniques and methods.
• the invention furthermore provides a method for improving, enhancing or modifying a consumer product base by means of the addition thereto of an olfactorily acceptable amount of the compound of formula (I).
• the invention also provides a fragranced article comprising:
• 'consumer product base' means a composition for use as a consumer product to fulfil specific actions, such as cleaning, softening, and caring or the like.
• examples of such products include fine perfumery, e.g. perfume and eau de toilette; fabric care, household products and personal care products such as cosmetics, laundry care detergents, rinse conditioner, personal cleansing composition, detergent for dishwasher, surface cleaner; laundry products, e.g. softener, bleach, detergent; body- care products, e.g. shampoo, shower gel; air care products (includes products that contain preferably volatile and usually pleasant-smelling compounds which
• Air fresheners for living areas contain, in particular, natural and synthetic essential oils such as pine needle oils, citrus oil, eucalyptus oil, lavender oil, and the like, in amounts for example of up to 50% by weight.
• natural and synthetic essential oils such as pine needle oils, citrus oil, eucalyptus oil, lavender oil, and the like
• aerosols they tend to contain smaller amounts of such essential oils, by way of example less than 5% or less than 2% by weight, but additionally include compounds such as acetaldehyde (in particular, ⁇ 0.5% by weight), isopropyl alcohol (in particular, ⁇ 5% by weight), mineral oil (in particular, ⁇ 5% by weight), and propellants.
• Cosmetic products include:
• cosmetic skincare products especially bath products, skin washing and cleansing products, skincare products, eye makeup, lip care products, nail care products, intimate care products, foot care products;
• cosmetic products with specific effects especially sunscreens, tanning products, depigmenting products, deodorants, antiperspirants, hair removers, and shaving products
• cosmetic dental-care products especially dental and oral care products, tooth care products, cleaners for dental prostheses, adhesives for dental prostheses
• cosmetic hair care products especially hair shampoos, hair care products, hair setting products, hair-shaping products, and hair coloring products. This list of products is given by way of illustration, and is not to be regarded as being in any way limiting.
• Ethyl 6-isopropyl-2,4-dimethylcyclohex-3-ene-1 -carboxylate (6 g, 26.7 mmol) was dissolved in 30 ml hexane and cooled to -78 °C.
• Diisobutylaluminum hydride (1 M, 26.7 mmol) was added drop wise over 30 minutes, keeping the temperature below -65 °C.
• the mixture was poured onto HCI 2M and extracted with ether to afford (6-isopropyl- 2,4-dimethylcyclohex-3-en-1 -yl)methanol (4.5 g, 95% yield) as a colorless liquid.
• 6-lsopropyl-2,4-dimethylcyclohex-3-ene-1 -carbaldehyde (2.2 g, 12.2 mmol) was placed in a distillation flask and toluene (20 ml) was added. Morpholine (1 .3 g, 14.6 mmol) and para-toluene sulfonic acid monohydrate (23 mg, 0.12 mmol) was added and the mixture was refluxed over a Dean-Stark water separator for 2 h. The mixture was concentrated and the residue was purified by chromatography over aluminium oxide with
• the accord above is a milky fruity accord to illustrate a juicy, over ripe fig with a clear milky facet.
• the addition of 10 parts of 6-isopropyl-2,4-dimethylcyclohex-3-en-1 -ol results in an accord with more lift, with a natural fig leaf facet.

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• Fats And Perfumes (AREA)
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• Cosmetics (AREA)
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