Classifications

• • 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
  • C11B9/0069—Heterocyclic compounds
  • C11B9/0073—Heterocyclic compounds containing only O or S as heteroatoms
  • C11B9/0076—Heterocyclic compounds containing only O or S as heteroatoms the hetero rings containing less than six atoms
• • 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
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
• • 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
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
  • A61K8/498—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom having 6-membered rings or their condensed derivatives, e.g. coumarin
• • 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
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
  • C07D317/02—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 2
  • C07D317/06—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 2 condensed with carbocyclic rings or ring systems
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
  • C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
  • C07D317/44—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
  • C07D317/46—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring

Definitions

• the present invention relates to the field of perfumery. More particularly, it concerns a new class of benzodioxole derivatives which are particularly useful as perfuming ingredients. Therefore, following what is mentioned herein, the present invention comprises also the invention's compounds as part of a perfuming composition or of a perfuming consumer product.
• R 1 represents a substituent of the benzene ring and is a halogen atom or a linear, branched or cyclic Ci -8 alkyl, alkenyl, alkynyl, alkoxy or alkenyloxy group;
• R 2 represents a C 1 -3 alkyl group
• R 3 represents a hydrogen atom or a methyl or ethyl group
• perfuming ingredient for instance to impart odor notes of the watery/ozone type.
• R 1 represents a substituent of the benzene ring
• R 1 represents the normal meaning understood by a person skilled in the art, i.e. that said group can be bound to the benzene ring at any one of the available positions, i.e. in the ortho or meta position of an oxygen atom or the benzodioxole moiety.
• linear, branched or cyclic it is meant that said R 1 can be in the form of, e.g., a linear group or can also be in the form of a mixture of said type of topologies, e.g. a specific R 1 may comprise a linear moiety and a cyclic moiety, unless a specific limitation to only one type is mentioned.
• said compounds (I) are of formula
• R 1 , R 2 and R 3 are as defined in formula (I).
• said compounds (I) or (II) are those wherein R 1 represents a substituent of the benzene ring and is a bromine atom or a linear, branched or cyclic Ci_ 6 alkyl, alkenyl, alkynyl, alkoxy or alkenyloxy group.
• said compounds (I) or (II) are those wherein R 1 represents a substituent of the benzene ring and is a linear or branched Ci -6 alkyl, alkenyl, alkynyl or alkoxy group or represents a C5-6 cyclic alkyl, alkenyl or methylcyloalkyl (i.e. CH 2 -cycloalkyl) group.
• said compounds (I) or (II) are those wherein R 1 represents a substituent of the benzene ring and is a linear or branched Ci -6 alkyl or alkenyl group or represents a C5-6 cyclic alkyl, alkenyl or methylcyloalkyl (i.e. CH 2 -cycloalkyl) group.
• said compounds (I) or (II) are those wherein R 1 represents a substituent of the benzene ring and is a linear or branched Ci -6 alkyl, alkenyl, alkoxy or alkenyloxy group.
• said compounds (I) or (II) are those wherein R 1 represents a substituent of the benzene ring and is a linear or branched Ci -6 alkyl or alkenyl group.
• said R 1 represents a linear or branched C3-6 alkyl or alkenyl group.
• Non-limiting examples of such R 1 group are propyl, iso-propyl, tert-butyl, iso-butyl, sec -butyl, n-butyl, n-pentyl, iso-pentyl, tert- pentyl or n-hexyl or prop- 1 -enyl or hex-2-enyl.
• said compounds (I) are those wherein R 2 represents a methyl or ethyl group.
• R 2 represents a methyl group.
• said compounds (I) are those wherein R 3 represents a hydrogen atom or a methyl group.
• said compounds (I) are C10-C15 compounds, or even are Ci 2 -Ci 4 compounds.
• the compounds of formula (I) are all new compounds and are therefore another object of the present invention, except l-[5-(l,l-dimethylethyl)-2-methyl-l,3- benzodioxol-2-yl]-ethanone, l-(4-methoxy-2-methyl-l,3-benzodioxol-2-yl)-ethanone and l-(5-methoxy-2-methyl-l,3-benzodioxol-2-yl)-ethanone as described above.
• l-(5-isopropylbenzo[d][l,3]dioxol-2-yl)ethanone which possesses an odor having a watery/ozonic note and a floral note, of the lily of the valley-anisic type.
• the combination of watery and floral notes is quite unusual in the art of perfumery and renders said compound all the more interesting.
• the present invention's compound distinguishes itself by the presence of said floral note, absent in the prior art compound.
• l-(5-propyl-l,3-benzodioxol-2-yl)-l-ethanone which, as the compound above, possesses also a mix of a watery/ozonic note and a fresh green floral (lily of the valley) note.
• said compound also has an aldehydic note.
• the odor of said compound reminds of a mix of cyclosal (Artcander N° 758, known as floral ingredient) and 3-(3-isopropyl-l-phenyl)butanal (known as watery ingredient).
• the present invention's compound distinguishes itself by the presence of said floral note, absent in the prior art compound.
• the odor is a mix of ozonic, cucumber type notes and balsamic, cinnamic notes with also an aldehydic aspect.
• the present invention's compound distinguishes itself by the presence of said balsamic note, absent in the prior art compound.
• Ozonic - lactonic duality fruity /peachy notes. Such duality is unique in the palette of the perfumer
• the invention's compounds in addition to the watery/ozone notes, have also notes or aspect of floral, balsamic and/or fatty-aldehyde types.
• the compounds of formula (I) are l-(5-isopropylbenzo[d][l,3]dioxol-2-yl)ethanone, l-(5-propyl-l,3- benzodioxol-2-yl)-l-ethanone, l-(5-pentylbenzo[d][l,3]dioxol-2-yl)ethanone, l-(2- methyl-5-propylbenzo[d][l,3]dioxol-2-yl)ethanone, l-(5-butylbenzo[d][l,3]dioxol-2- yl)ethanone, l-(5-hexylbenzo[d][l,3]dioxol-2-yl)ethanone, l-(5-tert- pentylbenzo[d][l,3]di
• such compounds are l-(5-isopropylbenzo[d][l,3]dioxol-2- yl)ethanone, l-(5-propyl-l,3-benzodioxol-2-yl)-l-ethanone, l-(5- pentylbenzo[d][l,3]dioxol-2-yl)ethanone, l-(2-methyl-5-propylbenzo[d][l,3]dioxol-2- yl)ethanone, (E)- 1 -(5-(prop- 1 -enyl)benzo [d] [ 1 ,3 ]dioxol-2-yl)ethanone, (E/Z)- 1 -(5 -(hex-2- enyl)benzo[d][l,3]dioxol-2-yl)ethanone or l-(5-butylbenzo[
• the invention concerns the use of a compound of formula (I) as perfuming ingredient.
• it concerns a method to confer, enhance, improve or modify the odor properties of a perfuming composition or of a perfumed article, which method comprises adding to said composition or article an effective amount of at least a compound of formula (I).
• use of a compound of formula (I) it has to be understood here also the use of any composition containing a compound (I) and which can be advantageously employed in perfumery industry.
• compositions which in fact can be advantageously employed as perfuming ingredients, are also an object of the present invention.
• Another object of the present invention is a perfuming composition
• a perfuming composition comprising:
• perfumery carrier we mean here a material which is practically neutral from a perfumery point of view, i.e. that does not significantly alter the organoleptic properties of perfuming ingredients.
• Said carrier may be a liquid or a solid.
• liquid carrier one may cite, as non-limiting example, an emulsifying system, i.e. a solvent and a surfactant system, or a solvent commonly used in perfumery.
• a solvent and a surfactant system i.e. a solvent and a surfactant system
• a detailed description of the nature and type of solvents commonly used in perfumery cannot be exhaustive.
• solvents such as dipropyleneglycol, diethyl phthalate, isopropyl myristate, benzyl benzoate, 2-(2- ethoxyethoxy)-l-ethanol or ethyl citrate, which are the most commonly used.
• compositions which comprise both a perfumery carrier and a perfumery base can be also ethanol, water/ethanol mixtures, limonene or other terpenes, isoparaffins such as those known under the trademark Isopar ® (origin: Exxon Chemical) or glycol ethers and glycol ether esters such as those known under the trademark Dowanol (origin: Dow Chemical Company).
• Isopar ® oil/ethanol mixtures
• glycol ethers and glycol ether esters such as those known under the trademark Dowanol (origin: Dow Chemical Company).
• absorbing gums or polymers may comprise wall- forming and plasticizing materials, such as mono, di- or trisaccharides, natural or modified starches, hydrocolloids, cellulose derivatives, polyvinyl acetates, polyvinylalcohols, proteins or pectins, or yet the materials cited in reference texts such as H. Scherz, Hydrokolloide: Stabilisatoren, Dickungs- und Gelierstoff in Strukturn, Band 2 der Strukturtechnisch Herbert Strukturchemie, claritat, Behr's Verlag GmbH & Co., Hamburg, 1996.
• the encapsulation is a well known process to a person skilled in the art, and may be performed, for instance, using techniques such as spray- drying, agglomeration or yet extrusion; or consists of a coating encapsulation, including coacervation and complex coacervation technique.
• perfumery base we mean here a composition comprising at least one perfuming co-ingredient.
• perfuming co-ingredient is not of formula (I).
• perfuming co- ingredient it is meant here a compound which is used in a perfuming preparation or a composition to impart a hedonic effect.
• co-ingredient to be considered as being a perfuming one, must be recognized by a person skilled in the art as being able to impart or modify in a positive or pleasant way the odor of a composition, and not just as having an odor.
• perfuming co-ingredients present in the base do not warrant a more detailed description here, which in any case would not be exhaustive, the skilled person being able to select them on the basis of his general knowledge and according to intended use or application and the desired organoleptic effect.
• these perfuming co-ingredients belong to chemical classes as varied as alcohols, lactones, aldehydes, ketones, esters, ethers, acetates, nitriles, terpenoids, nitrogenous or sulphurous heterocyclic compounds and essential oils, and said perfuming co-ingredients can be of natural or synthetic origin. Many of these co-ingredients are in any case listed in reference texts such as the book by S.
• perfumery adjuvant we mean here an ingredient capable of imparting additional added benefit such as a color, a particular light resistance, chemical stability, etc.
• additional added benefit such as a color, a particular light resistance, chemical stability, etc.
• An invention's composition consisting of at least one compound of formula (I) and at least one perfumery carrier represents a particular embodiment of the invention as well as a perfuming composition comprising at least one compound of formula (I), at least one perfumery carrier, at least one perfumery base, and optionally at least one perfumery adjuvant.
• any mixture resulting directly from a chemical synthesis e.g. a reaction medium without an adequate purification, in which the compound of the invention would be involved as a starting, intermediate or end-product could not be considered as a perfuming composition according to the invention as far as said mixture does not provide the inventive compound in a suitable form for perfumery.
• unpurified reaction mixtures are generally excluded from the present invention unless otherwise specified.
• the invention's compound can also be advantageously used in all the fields of modern perfumery, i.e. fine or functional perfumery, to positively impart or modify the odor of a consumer product into which said compound (I) is added. Consequently, a perfuming consumer product which comprises:
• the invention's compound can be added as such or as part of an invention's perfuming composition.
• perfuming consumer product it is meant a consumer product which is expected to deliver at least a perfuming effect, in other words it is a perfumed consumer product.
• perfumery consumer base we mean here the functional formulation, as well as optionally additional benefit agents, corresponding to a consumer product which is compatible with perfuming ingredients and is expected to deliver a pleasant odor to the surface to which it is applied (e.g. skin, hair, textile, or home surface).
• a perfuming consumer product according to the invention comprises the functional formulation, as well as optionally additional benefit agents, corresponding to the desired consumer product, e.g. a detergent or an air freshener, and an olfactive effective amount of at least one invention' s compound.
• Non-limiting examples of suitable perfumery consumer bases can be a perfume, such as a fine perfume, a cologne or an after-shave lotion; a fabric care product, such as a liquid or solid detergent, a fabric softener, a fabric refresher, an ironing water, a paper, or a bleach; a body-care product, such as a hair care product (e.g. a shampoo, a coloring preparation or a hair spray), a cosmetic preparation (e.g. a vanishing cream or a deodorant or antiperspirant), or a skin-care product (e.g.
• a hair care product e.g. a shampoo, a coloring preparation or a hair spray
• a cosmetic preparation e.g. a vanishing cream or a deodorant or antiperspirant
• a skin-care product e.g.
• a perfumed soap, shower or bath mousse, oil or gel, or a hygiene product a perfumed soap, shower or bath mousse, oil or gel, or a hygiene product
• an air care product such as an air freshener or a "ready to use” powdered air freshener
• a home care product such as a wipe, a dish detergent or hard- surface detergent.
• consumer product bases may represent an aggressive medium for the invention's compound, so that it may be necessary to protect the latter from premature decomposition, for example by encapsulation or by chemically bounding it to another chemical which is suitable to release the invention's ingredient upon a suitable external stimulus, such as an enzyme, light, heat or a change of pH.
• a suitable external stimulus such as an enzyme, light, heat or a change of pH.
• the proportions in which the compounds according to the invention can be incorporated into the various aforementioned articles or compositions vary within a wide range of values. These values are dependent on the nature of the article to be perfumed and on the desired organoleptic effect as well as the nature of the co-ingredients in a given base when the compounds according to the invention are mixed with perfuming co- ingredients, solvents or additives commonly used in the art.
• concentrations are in the order of 0.05 % to 10 % by weight, or even more, of the compounds of the invention based on the weight of the composition into which they are incorporated. Concentrations lower than these, such as in the order of 0.01% to 5% by weight, can be used when these compounds are incorporated into perfumed articles, percentage being relative to the weight of the article.
• R 1 , R 2 and R 3 have the same meaning as provided in formula (I).
• the carboxylic acid intermediates (A) are also new compounds with the exception of 4-methoxy-l,3-benzodioxole-2-carboxylic acid (see JP 2002068908 - agrochemical compounds), 5-methyl-l,3-benzodioxole-2-carboxylic acid (see J.Med.Chem., 1965, 8, 81) and 4-methyl-l,3-benzodioxole-2-carboxylic acid (see J.Agric. & Food Chem., 2002, 50, 4554), and are also another object of the present invention as intermediate for the preparation of useful chemicals.
• Particular carboxylic acid are those required for the preparation of the chemicals of formula (I) above cited specifically. Examples
• the resulting brown solid was taken up in 200 ml of water and extracted with three 100 ml portions of ether. 100 ml of ether was added to the aqueous phase and this mixture was acidified while stirring to pH 2. The two layers were separated and the aqueous phase extracted with 100 ml of ether. The two ethereal phases were combined, washed with 50 ml of water and
• Second step - A solution of the carboxylic acid (13.19 g, 63.35 mmol) in 350 ml of THF was cooled to 0°C while a solution of methyl lithium (97 ml of a 1.6 M solution, 155 mmol) was added in 5 minutes (alternatively, the lithium salt is formed by heating with 1 equivalent of lithium hydroxide suspension in refluxing toluene and some THF and 1 equivalent of methyl lithium is added to the resulting salt). The reaction mixture was stirred below 0°C for an additional 40 minutes and was then transferred in about 5 minutes, via a cannula, to a flask containing a rapidly stirring mixture of HC1 (17 g, 0.17 mol) in 500 ml of water.
• a suspension of cyclopentyl(3,4-dimethoxyphenyl)methanone (10.8 g, 0.046 mol), wet Pd/C (1 g) in 10 ml of acetic acid and 10 ml of ethyl acetate was put in an autoclave at 60°C with 20 bars of hydrogen during 24 hours. Filtration over Celite ® and concentration gave 10 g of pale brown oil. This oil was purified by vacuum distillation (100-120°C, 0.02 mbar) through a short path to give 7.1 g (70%) of a colorless liquid.
• a perfuming composition for Eau de cologne for woman was prepared by admixing the following ingredients:
• a perfuming composition for Eau de cologne for man was prepared by admixing the following ingredients:

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• 2011
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