阅读说明：本技术 新型感官化合物 (Novel organoleptic compounds ) 是由 A·P·S·纳鲁拉 R·A·韦斯 H·R·G·德努特 J·斯梅茨 P·J·波特 F·A·C 于 2019-10-22 设计创作，主要内容包括：本发明涉及新型化合物以及其作为香味材料的用途。(The present invention relates to novel compounds and their use as fragrance materials.)

1. A compound of the formula:

wherein R represents H; one dotted line in the ring represents a carbon-carbon single bond and the other dotted line represents a carbon-carbon double bond; the dashed line in the chain represents a carbon-carbon single bond or a carbon-carbon double bond, provided that when the dashed line in the chain represents a carbon-carbon double bond, R is absent.

2. The compound according to claim 1, selected from:

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol; and mixtures thereof.

3. The compound of claim 2, wherein the compound is (E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one and (E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one.

4. A fragrance formulation comprising an olfactory acceptable amount of a compound of the formula:

wherein R represents H; one dotted line in the ring represents a carbon-carbon single bond and the other dotted line represents a carbon-carbon double bond; the dashed line in the chain represents a carbon-carbon single bond or a carbon-carbon double bond, provided that when the dashed line in the chain represents a carbon-carbon double bond, R is absent.

5. The fragrance formulation of claim 4, wherein the compound is selected from the group consisting of:

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol; and mixtures thereof.

6. The fragrance formulation according to claim 5, wherein the compounds are (E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one and (E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one.

7. The fragrance formulation of claim 4, wherein the olfactory acceptable amount is from about 0.005 to about 50 weight percent of the fragrance formulation.

8. The fragrance formulation of claim 4, wherein the olfactory acceptable amount is from about 0.5 to about 25 weight percent of the fragrance formulation.

9. The fragrance formulation of claim 4, wherein the olfactory acceptable amount is from about 1 to about 10 weight percent of the fragrance formulation.

10. A method of improving, enhancing or modifying a fragrance formulation by the addition of an olfactory acceptable amount of a compound of the formula:

wherein R represents H; one dotted line in the ring represents a carbon-carbon single bond and the other dotted line represents a carbon-carbon double bond; the dashed line in the chain represents a carbon-carbon single bond or a carbon-carbon double bond, provided that when the dashed line in the chain represents a carbon-carbon double bond, R is absent.

11. The method of claim 10, wherein the compound is selected from the group consisting of:

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one;

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol;

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol; and mixtures thereof.

12. The method of claim 11, wherein the compound is (E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one and (E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one.

13. The method of claim 10, wherein the olfactory acceptable amount is from about 0.005 to about 50 weight percent of the scent formulation.

14. The method of claim 10, wherein the olfactory acceptable amount is from about 0.1 to about 25 weight percent of the scent formulation.

15. The method of claim 10, wherein the olfactory acceptable amount is from about 0.5 to about 10 weight percent of the scent formulation.

Technical Field

The present invention relates to novel chemical entities and the encapsulation and use of said chemical entities as fragrance materials.

Background

There is a continuing need in the fragrance industry to provide new chemicals to give perfumers and other persons the ability to create new fragrances for perfumes, colognes and personal care products. One skilled in the art understands that differences in the chemical structure of molecules can lead to significant differences in the odor, notes (notes) and properties of the molecules. These changes, and the continuing need to discover and use new chemicals in the development of new fragrances, enable perfumers to apply new compounds to create new fragrances.

Summary of The Invention

The present invention provides novel compounds and their unexpected advantageous use in enhancing, improving or modifying fragrance in perfumes, colognes, toilet waters, fabric care products and personal products and the like.

More particularly, the present invention relates to novel (dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (alcohols) represented by the following formula I:

wherein R represents H; one dotted line in the ring represents a carbon-carbon single bond and the other dotted line represents a carbon-carbon double bond; the dashed line in the chain represents a carbon-carbon single bond or a carbon-carbon double bond, provided that when the dashed line in the chain represents a carbon-carbon double bond, R is absent.

Another embodiment of the present invention relates to a fragrance formulation comprising the above novel compounds.

Another embodiment of the present invention relates to a perfumed product comprising the above compound.

Another embodiment of the present invention relates to a method of improving, enhancing or modifying a fragrance formulation by adding an olfactory acceptable amount of the novel compounds described above.

These and other embodiments of the present invention will become apparent upon reading the following description.

Detailed Description

(dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (alcohol) compounds represented by formula I of the present invention are illustrated by the following examples.

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol

(E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol

(E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol

(E) -1- ((1S,6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-ol

One skilled in the art will recognize that the compounds of the present invention may have multiple isomers, such as positional isomers, depending on the starting materials available. It is intended herein that the compounds described herein include mixtures of isomers as well as the individual isomers which may be separated using techniques known to those skilled in the art. Suitable techniques include chromatography, such as high performance liquid chromatography, known as HPLC, in particular silica gel chromatography and gas chromatography trapping, known as GC trapping. However, the commercial products are mostly provided as isomer mixtures. The term "compound" is understood to mean (dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (alcohol) represented by formula 1-8 as described herein. In the examples, the invention is detailedPreparation of the compounds of formula (I). Can be easily obtained from the corresponding structures 1 to 4 by using lithium aluminum hydride (LiAlH)₄) Hydrogenation was carried out to prepare structures 5-8. Unless otherwise indicated, materials were purchased from Aldrich Chemical Company.

For example, the compounds of the present invention have intense and complex fresh notes (fresh), crisp notes (crisp), slightly greenish notes (green), resiniferous notes (resinous), coniferous notes (coniferous), floral notes, ionone-like, amber (ambery), woody and diffusive notes. The compounds of the present invention are widely applicable to current perfumed products, including the preparation of perfumes and colognes, the perfuming of personal care products such as soaps, shower gels and hair care products, fabric care products, air fresheners and cosmetic preparations. The present invention may also be used in perfumed detergents such as, but not limited to, detergents, dishwashing materials, detergent compositions, window cleaners and the like.

In these formulations, the compounds of the present invention can be used alone or in combination with other perfuming compositions, solvents, adjuvants and the like. The nature and kind of other ingredients that may also be used are known to those skilled in the art. Many types of fragrance materials can be used in the present invention, the only limitation being their compatibility with the other components used. Suitable aromas include, but are not limited to, fruit aromas such as those from almonds, apples, cherries, grapes, pears, pineapples, oranges, strawberries, raspberries; musk and the like; and floral scents such as lavender-like, rose-like, iris-like, carnation-like. Other pleasant odours include herbal and forest odours derived from pine, spruce and other forest odours. The aromas can also be derived from various oils (e.g., essential oils) or from plant materials (e.g., peppermint, spearmint, and the like).

A list of suitable scented materials is provided in U.S. patent No. 4,534,891, the contents of which are hereby incorporated by reference in their entirety. Another source of suitable aromas can be edited at w.a. poucherPerfumes, Cosmetics and SoapsSecond edition, 1959. The scented materials provided in this paper include acacia, chypre, cyclamen, fern, etc,Gardenia, hawthorn, heliotrope, honeysuckle, hyacinth, jasmine, clove, lily, magnolia flower, mimosa, narcissus, fresh cut hay, orange flower, orchid, rhinoceros, sweet pea, clover, tuberose, vanilla, violet, wallflower and the like.

The compounds of the present invention may be used in combination with complementary flavour compounds. The term "complementary aroma compounds" as used herein is defined as being selected from the group consisting of: 2- [ (4-methylphenyl) methylene ] -heptanal (Acalea), Allyl isopentyloxyacetate (galbanum ester (Allyl Amyl Glycolate)), 4,10,10,11,12, 12-heptamethyl-3-oxatricyclo [7.3.0.0<2,6> ] dodecane (Amber Xtreme), (3, 3-dimethylcyclohexyl) ethylethylpropane-1, 3-dioate (Applelide), (E/Z) -1-ethoxy-1-decene (Arctical), 2-ethyl-4- (2,2, 3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol (santalol), 2-methyl-3- [ (1,7, 7-trimethylbicyclo [2.2.1] hept-2-yl) oxy ] exo-1-propanol (Bornafacix) ) 1,2,3,5,6, 7-hexahydro-1, 1,2,3, 3-pentamethyl-4H-inden-4-one (kesmolone (Cashmeran)), trimethylcyclopentenylmethyloxabicyclooctane (Cassiffix), 1-dimethoxy-3, 7-dimethyl-2, 6-octadiene (citral DMA), 3, 7-dimethyl-6-octen-1-ol (Citronellol), 3A,4,5,6,7, 7A-hexahydro-4, 7-methano-1H-indene-5/6-ylacetate (tricyclodecenyl acetate)), 3A,4,5,6,7, 7A-hexahydro-4, 7-methano-1H-indene-5/6-ylpropionate (Cyclaprop), 3A,4,5,6,7, 7A-hexahydro-4, 7-methano-1G-indene-5/6-ylbutyrate (cyclobutyrate), 1- (2,6, 6-trimethyl-3-cyclohexen-1-yl) -2-buten-1-one (Delta Damascone), 3- (4-ethylphenyl) -2, 2-dimethylpropionitrile (Fleuranil), 3- (O/P-ethylphenyl) 2, 2-dimethylpropionaldehyde (Florazone), tetrahydro-4-methyl-2- (2-methylpropyl) -2H-pyran-4-ol (Floraflonol), 1,3,4,6,7, 8-hexahydro-4, 6,6,7,8, 8-hexamethylcyclopent- γ -2-benzopyran (Galaxolide)), 1- (5, 5-dimethyl-1-cyclohexen-1-yl) pent-4-en-1-one (Galbascone), E/Z-3, 7-dimethyl-2, 6-octadien-1-ylacetate (geranylacetate)), α -methyl-1, 3-benzodioxole-5-propanal (Helional)), 1- (2,6, 6-trimethyl-2-cyclohexen-1-yl) -1, 6-heptadien-3-one (Hexalon), (Z) -3-Hexenyl-2-hydroxybenzoate (folic Salicylate (Hexenyl Salicylate), CIS-3), 4- (2,6, 6-trimethyl-2-cyclohexen-1-yl) -3-buten-2-one (. alpha. -Ionone (. alpha.)), 1- (1,2,3,4,5,6,7, 8-octahydro-2, 3,8, 8-tetramethyl-2-naphthyl) -ethan-1-one (Iso E Super), methyl-3-oxo-2-pentylcyclopentaneacetate (Kharasma), 2, 4-trimethyl-4-phenyl-butyronitrile (Khusinil), 3,4,5,6, 6-pentamethyl hept-3-en-2-one (Koavanone), 3/4- (4-hydroxy-4-Methyl-pentyl) cyclohexene-1-carbaldehyde (Lyral), 3-Methyl-4- (2,6, 6-trimethyl-2-cyclohexen-1-yl) -3-buten-2-one (gamma-methylionone gamma)), 1- (2,6, 6-trimethyl-2-cyclohexen-1-yl) pent-1-en-3-one (alpha-methylionone Extra (Methyl Ionone alpha Extra), methylionone N (Methyl Ionone N), 3-Methyl-4-phenylbut-2-ol (Muguia), cyclopentadec-4-en-1-one (Muessk Z4), 3,3,4,5, 5-pentamethyl-11, 13-dioxatricyclo [7.4.0.0<2,6> ] tridec-2 (6) -ene (Nebuline), 3, 7-dimethyl-2, 6-octadien-1-ylacetate (Neryl Acetate), 3, 7-dimethyl-1, 3, 6-octatriene (Ocimene), o-tolylethanol (Peomosa), 3-methyl-5-phenylpentanol (phenylisohexanol (Phenoxanol)), 1-methyl-4- (4-methyl-3-pentenyl) cyclohex-3-ene-1-carbaldehyde (Precyclemone B), 4-methyl-8-methylene-2-adamantanol (prism), 2-Ethyl-4- (2,2, 3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol (Sanjinol), 2-methyl-4- (2,2, 3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol (Santaliff), 3- [ cis-4- (2-methylpropyl) cyclohexyl ] propanal (Starfleur), terpineol, 2, 4-dimethyl-3-cyclohexene-1-carbaldehyde (privet aldehyde (Triplal)), decahydro-2, 6,6,7,8, 8-hexamethyl-2H-indeno [4,5-B ] furan (Trisaber), 2-tert-butylcyclohexaneacetate (Verdox), (3E) -4-methyldec-3-en-5-one (Veridian), 4-tert-butylcyclohexaneacetate (p-tert-butylcyclohexyl acetate (Vertenex)), acetylcedrene (methyl cedrene (Vertofix)), 3,6/4, 6-dimethylcyclohex-3-ene-1-carbaldehyde (Vertoliff) and (3Z) -1- [ (2-methyl-2-propenyl) oxy ] -3-hexene (Vivaldie).

The complexity of the odor notes means that there are multiple and/or mixed well-defined odors, rather than individual notes or some notes that are easily identifiable. The high complexity is also attributed to compounds that have faint and to some extent difficult to define notes due to direct contribution of the generated odor or a combination of multiple olfactory sensations. Highly complex flavour materials are considered to be of unusual and high quality.

The term "alkyl" refers to a straight or branched chain saturated monovalent hydrocarbon such as methyl, ethyl, propyl, 2-propyl, butyl (including all isomeric forms), pentyl (including all isomeric forms), hexyl (including all isomeric forms), and the like. The term "alkenyl" refers to a straight or branched chain unsaturated aliphatic hydrocarbon containing at least one carbon-carbon double bond. The term "alkylene" refers to a divalent alkyl group. Examples include-CH₂–、–CH₂CH₂–、–CH₂CH₂CH₂–、–CH₂(CH₃)CH₂–、–CH₂CH₂CH₂CH₂-, and the like.

The terms "fragrance formulation (fragrance formulation)", "fragrance composition (fragrance composition)" and "perfuming composition (perfume composition)" are synonymous and refer to a consumer composition (consumer composition) which is a mixture of compounds including, for example, alcohols, aldehydes, ketones, esters, ethers, lactones, nitriles, natural oils, synthetic oils and thiols, which are mixed such that the mixed odor of the individual components produces a pleasant or desired fragrance. The flavour preparations of the present invention are consumer product compositions comprising the compounds of the present invention. The flavour preparation of the present invention comprises a compound of the present invention and further comprises a complementary flavour compound as defined above.

The term "fragrance product" refers to a consumer product containing a fragrance ingredient that adds a fragrance or masks a malodor. Scented products may include, for example, perfumes; gulong water; a soap; a liquid soap; shower gel; bubble bath lotion; a cosmetic; skin care products such as creams, lotions and shaving products; hair care products such as shampoos, rinses, conditioners, bleaches, colorants, dyes and styling agents; deodorants and antiperspirants; feminine care products, such as tampons and feminine napkins; baby care products such as diapers, bibs, and wet wipes; household care products such as toilet paper (bath tissues), facial tissue, paper handkerchiefs (paper hand kerchiefs) or paper wipes (paper towels); fabric products such as fabric softeners and fabric fresheners; air purification products such as air fresheners and scent delivery systems; a cosmetic preparation; detergents and disinfectants such as detergents, dishwashing agents, stain removal compositions; glass and metal cleaners, such as window cleaners; a tabletop cleanser; floor and carpet cleaners; toilet cleaners and bleach additives; cleaning agents such as multipurpose cleaning agents, heavy duty cleaning agents and hand or fine fabric cleaning agents, including laundry detergents and rinse additives; dental and oral hygiene products such as toothpaste, tooth gel, dental floss, denture cleanser, denture adhesive, tooth powder, tooth whitening and mouthwash; health care and nutritional products, and food products, such as snack and beverage products. The perfumed product of the invention is a consumer product comprising a compound of the invention. The perfumed product of the invention contains the compound of the invention and also contains complementary perfumed compounds as defined above.

The term "improving" in the phrase "improving, enhancing or modifying a fragrance formulation" is understood to mean promoting the fragrance formulation to a more desirable characteristic (character). The term "enhance" is understood to mean to increase the efficacy of a fragrance formulation or to provide an improved characteristic to said fragrance formulation. The term "modifying" is understood to provide a change in a characteristic to the fragrance formulation.

The term "olfactory acceptable amount" is understood to mean that amount of a compound in a fragrance formulation that contributes to its individual olfactory characteristics. However, the olfactory effect of the fragrance formulation will be the sum of the individual effects of the fragrance ingredients. The compounds of the invention can thus be used to improve or enhance the aroma profile of a fragrance formulation, or to modify the aroma profile of a fragrance formulation by modifying the olfactory reaction contributed by another ingredient in the fragrance formulation. The olfactory acceptable amount will vary depending on a number of factors, including the other ingredients, their relative amounts, and the olfactory effect desired. The amount of the compounds of the present invention used in the fragrance formulation varies from about 0.005 to about 70% by weight, preferably from about 0.005 to about 50% by weight, more preferably from about 0.5 to about 25% by weight and even more preferably from about 1 to about 10% by weight. Those skilled in the art will be able to use the required amounts to provide the desired flavor impact and intensity.

In addition to the compounds of the present invention, other materials may also be used in combination with the fragrance formulation to encapsulate and/or deliver the fragrance. Well known materials such as, but not limited to, polymers; an oligomer; other non-polymers such as surfactants, emulsifiers; lipids including fats, waxes and phospholipids; an organic oil; mineral oil; petrolatum; a natural oil; a fragrance fixative; fibers; starch; sugars and solid surface materials such as zeolites and silica. Some preferred polymers include polyacrylates, polyureas, polyurethanes, polyacrylamides, polyesters, polyethers, polyamides, poly (acrylate-co-acrylamides), starches, silicas, gelatins and gum arabic, alginates, chitosan, polylactides, poly (melamine-formaldehyde), poly (urea-formaldehyde), or combinations thereof.

When used in a fragrance formulation, these ingredients provide additional notes that make the fragrance formulation more pleasing and noticeable, and increase the perceived value. The odor qualities found in these materials help to beautify and enhance the finished product, synergistically improving the performance of other materials in the scent.

In addition, it has also been surprisingly found that the compounds of the present invention provide superior ingredient performance and have unexpected advantages in malodor counteracting applications such as on body sweat, environmental odors such as black mold (mold) and white mold (milew), and bathrooms. The compounds of the present invention substantially eliminate the perception of malodors and/or prevent the formation of such malodors, and thus can be used in a wide variety of functional products.

Examples of functional products are provided herein to illustrate various aspects of the present invention. However, it is not intended to limit the scope of the present invention. Functional products may include, for example, conventional room freshener (or deodorizer) compositions, such as room freshener sprays, aerosols, or other sprays; a fragrance diffusing agent; wicks or other liquid systems, or solids, such as candles or wax bases as in cartridges and plastics; powder in sachets or dry sprays or gel as in solid gel sticks; laundry deodorants such as those used in washing machine applications, such as detergents, powders, liquids, whiteners or fabric softeners, fabric fresheners, linen sprays (linen sprays); in closets (close blocks), closet aerosol sprays (close aerosol sprays), or in garment storage areas or in dry cleaning to overcome residual solvent-like notes on garments; bathroom accessories such as hand wipes, toilet paper, sanitary napkins, wet wipes, disposable diapers, disposable diaper and diaper pail deodorants; cleaners such as disinfectants and toilet bowl cleaners; cosmetics such as antiperspirants and deodorants; general body deodorants in powder, aerosol, liquid or solid form; or hair care products such as hair sprays, conditioners, rinses, hair colorants and dyes, permanent waves, depilatories, straighteners; hair styling applications (hair groom applications) such as pomades, creams and lotions; medicated hair care products or shampoos containing ingredients such as selenium disulfide, coal tar or salicylate; or foot care products such as foot powders, liquids or colognes; aftershave and body lotion; or toilet soaps and synthetic detergents such as soap bars, liquids, foams or powders; odour control such as in manufacturing processes, for example in the textile finishing industry and printing industry (inks and paper); effluent control such as effluent control in processes involving pulping, animal farms, and meat processing; treating sewage; disposal of refuse bags or refuse; or odor control of products such as textile articles, rubber articles or automotive air fresheners; agricultural and pet care products, such as waste water from dogs and chicken houses and livestock and pet care products, such as deodorants, shampoos or detergents; or animal litter materials and odor control in large scale enclosed systems such as auditoriums, subways, and transportation systems.

Thus, it can be seen that the compositions of the present invention are generally compositions in which the malodor counteractant is present together with a carrier with or via which the malodor counteractant can be introduced into the air space in which the malodor is present, or into the substrate on which the malodor is deposited. For example, the carrier may be an aerosol propellant, such as chlorofluoromethane, or a solid such as a wax, plastics material, rubber, inert powder or gel. In a wick-type air freshener, the carrier is a low volatility, substantially non-odorous liquid. In some applications, the compositions of the present invention contain a surfactant or disinfectant, while in other applications, the malodor counteractant is present on the fibrous substrate. In many compositions of the present invention, a fragrance component is also present, which imparts a fragrance to the composition. All of the above fragrances may be employed.

Malodor counteracting effective amount is understood to be the amount of the malodor counteracting agent of the present invention employed in a functional product that is organoleptically effective in reducing the combined intensity of a given malodor, either present in the air space or already deposited on a substrate, while reducing the odor level. The exact amount of malodor counteractant employed may vary with the type of malodor counteractant, the type of carrier employed, and the level of malodor counteractant desired. In general, the amount of malodor counteractant present is the usual dose needed to obtain the desired result. Such dosages are well known to those skilled in the art. In a preferred embodiment, the compounds of the present invention may be present in an amount of from about 0.005 to about 50 wt%, preferably from about 0.01 to about 20 wt% and more preferably from about 0.05 to about 5 wt% when used in combination with malodorous solid or liquid functional products such as soaps and detergents, and from about 0.1 to 10 mg per cubic meter of air when used in combination with malodorous gaseous functional products.

The following is provided as a specific embodiment of the present invention. Other modifications of the invention will be apparent to persons skilled in the art. Such modifications are understood to be within the scope of the present invention. Unless otherwise indicated, all percentages used herein are weight percentages, ppm being understood to mean parts per million, L being understood to be liters, mL being understood to be milliliters, g being understood to be grams, Kg being understood to be kilograms, mol being understood to be moles, mmol being understood to be millimoles, psig being understood to be pounds force per square inch (gauge), and mmHg being understood to be millimeters (mm) of mercury (Hg). IFF used in the examples is referred to International Flavors & Fragrances Inc., New York, NY, USA.

Example I

(E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 1), (E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 2), (E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 3) and (E) -1- ((1S, preparation of 6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 4): potassium hydroxide (KOH) (32.5g, 0.58mol) was dissolved in methanol (CH)₃OH) (800 mL). A slight exotherm was observed. The reaction mixture was cooled to room temperature. 3-pentanone ((CH)₃CH₂)₂CO) (299g, 3.5mol) was slowly added to the mixture while the temperature was maintained at 20-25 ℃. An isomer mixture (400g, 2.9mol) (available from IFF) of (6R) -4, 6-dimethylcyclohex-3-ene-1-carbaldehyde, (1S,6S) -3, 6-dimethylcyclohex-3-ene-1-carbaldehyde, (1R,6S) -4, 6-dimethylcyclohex-3-ene-1-carbaldehyde and (1S,6R) -3, 6-dimethylcyclohex-3-ene-1-carbaldehyde was fed to the reaction mixture over 5-6 hours while the reaction mixture exothermed to 30-35 ℃. After the feed was complete, the reaction mixture was heated to 50-55 ℃ and then held for 3-4 hours. The reaction mixture was cooled to room temperature and treated with glacial acetic acid (CH)₃COOH) (30g, 0.5mol) and then heated to 80 ℃ to distill MeOH. The reaction mixture was then washed with brine (500 mL). The aqueous layer was removed and the organic layer was distilled to give (E) -1- ((1R,6R) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1S,6S) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one, (E) -1- ((1R,6S) -4, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one and (E) -1- ((1S, a mixture of 6R) -3, 6-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (396g) in a weight ratio of about 13: 21: 26: 37 and a boiling point of 122 c at a pressure of 5 mmHg.

¹H NMR(500MHz,CDCl₃)δ:6.39-6.58(m,1H),5.31-5.37(m,1H),2.24-2.78(m,1H),2.64(m,2H),1.60-2.20(m,4H),1.95(m,1H),1.77(m,3H),1.65(m,3H),1.07(m,3H),0.84(m,3H)

The mixtures of structures 1-4 are described as having a fresh note, a crisp note, a slightly greenish note, a resin note, a pine note, a floral note, an ionone-like, an amber note, and a woody note. These pleasant notes are also diffuse and blooming (blooming).

Example II

(E) Preparation of-1- ((1R,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 9) and (E) -1- ((1S,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one (Structure 10): a mixture of (E) -1- ((1R,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one and (E) -1- ((1S,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one was prepared in analogy to example I from an isomeric mixture of (1R,2R) -2, 4-dimethylcyclohex-3-en-1-carbaldehyde and (1S,2R) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-carbaldehyde (commercially available from IFF), the weight ratio was about 69: 28.

(E) -1- ((1R,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one has the following NMR spectral characteristics:

¹H NMR(400MHz,CDCl₃)δ:6.44(dd,J＝9.7,1.3Hz,1H),5.18-5.25(m,1H),2.68(q,J＝7.4Hz,2H),2.11-2.23(m,1H),1.85-2.10(m,3H),1.79(d,J＝1.4Hz,3H),1.63-1.71(m,1H),1.67(s,3H),1.41-1.55(m,1H),1.08(t,J＝7.4Hz,3H),0.88(d,J＝6.8Hz,3H)

(E) -1- ((1S,2S) -2, 4-dimethylcyclohex-3-en-1-yl) -2-methylpent-1-en-3-one has the following NMR spectral characteristics:

¹H NMR(400MHz,CDCl₃)δ:6.60(dd,J＝9.7,1.3Hz,1H),5.25-5.29(m,1H),2.70-2.80(m,1H),2.66(q,J＝7.4Hz,2H),2.32-2.42(m,1H),1.85-2.10(m,2H),1.80(d,J＝1.4Hz,3H),1.63-1.71(m,2H),1.67(s,3H),1.07(t,J＝7.4Hz,3H),0.87(d,J＝6.8Hz,3H)

the mixture of structures 9 and 10 is described as having green, floral and woody notes.

The mixtures of structures 1-4 showed significantly stronger, longer lasting and more complex notes than the two mixtures obtained from example I and example II, respectively. In contrast, the mixture of structures 9 and 10 appeared weak, thin, unnatural and rough (hash). The mixtures of structures 9 and 10 are also devoid of the resins and conifer notes present in the mixtures of structures 1-4.