Abstract: A compound of formula (I) is provided wherein R represents a linear or branched C5 alkyl group, as well as the use of such compounds in a fragrant and/or flavoring composition, or as a masking agent for odors and/or flavors.

Abstract: Cyclohexenone and cyclohexenol compounds are provided having specific fragrances and remanence properties, along with methods for synthesizing these compounds, including obtaining the compound by condensing a ketone on an ?-methylene-aldehyde in order to obtain, by means of a domino reaction, compounds of formula (II) as follows:

Abstract: The present invention concerns a method for synthesizing cyclohexenone and cyclohexenol compounds having specific fragrances and remanence properties, said method consisting in condensing a ketone on an ?-methylene-aldehyde in order to obtain, by means of a domino reaction, compounds of formula (I).

Abstract: Cyclohexenone and cyclohexenol compounds are provided having specific fragrances and remanence properties, along with methods for synthesizing these compounds, including obtaining the compound by condensing a ketone on an ?-methylene-aldehyde in order to obtain, by means of a domino reaction, compounds of formula (II) as follows:

Abstract: A compound of formula (I) is provided wherein R represents a linear or branched C5 alkyl group, as well as the use of such compounds in a fragrant and/or flavoring composition, or as a masking agent for odors and/or flavors.

Abstract: A process of preparing a compound of formula (I) wherein R represents a linear or branched C5 alkyl group, as well as the use of such compounds in a fragrant and/or flavoring composition.

Abstract: The present invention concerns a method for synthesising cyclohexenone and cyclohexenol compounds having specific fragrances and remanence properties, said method consisting in condensing a ketone on an ?-methylene-aldehyde in order to obtain, by means of a domino reaction, compounds of formula (I).

Abstract: The invention relates to a compound of general formula I represented below: wherein: R1, R2 and R3 each independently represent a hydrogen atom or saturated or unsaturated, branched or non-branched C1 to C5 alkyl group; m is an integer between 1 and 4; n is an integer between 2 and 4; characterized in that the ring is saturated and comprises from 5 to 8 carbons, that the total number of carbons of the ring and of the radicals R1, R2 and R3 is between 7 and 11 and it being understood that said compound of formula (I) is not: 6-cycloheptylidenehexanal 4-(4-methylcyclohexylidene)-butanal 4-(4-tert-butylcyclohexylidene)-butanal 4-(3,3,5-trimethylcyclohexylidene)-butanal as well as a method of synthesizing said compounds, and their uses in perfumery.

Abstract: The invention relates to a compound of general formula I represented below: wherein: R1, R2 and R3 each independently represent a hydrogen atom or saturated or unsaturated, branched or non-branched C1 to C5 alkyl group; m is an integer between 1 and 4; n is an integer between 2 and 4; characterised in that the ring is saturated and comprises from 5 to 8 carbons, that the total number of carbons of the ring and of the radicals R1, R2 and R3 is between 7 and 11 and it being understood that said compound of formula (I) is not: 6-cycloheptylidenehexanal 4-(4-methylcyclohexylidene)-butanal 4-(4-tert-butylcyclohexylidene)-butanal 4-(3,3,5-trimethylcyclohexylidene)-butanal as well as a method of synthesising said compounds, and their uses in perfumery.

Abstract: The invention is directed to the use of compounds of formula (I), as fragrant agents. In this formula: —R3 and R4 are independently a hydrogen atom, a C1-C6 alkyl group or a C2-C6 alkenyl group, R5 is a C1-C6 alkyl group, a C2-C6 alkenyl group or a (CH2)0-2-aryl group, R6 is a C1-C6 alkyl group, a C2-C6 alkenyl group, a (CH2)0-2-aryl group or a C5-C6 cycloalkyl or cycloalkenyl group, and R7 is a hydrogen atom, a C1-C6 alkyl group or a C2-C6 alkenyl group; or R3, R4 and R5 are as above defined, and R6 and R7 together with the carbon atom to which they are attached form a C5-C6 cycloalkyl or cycloalkenyl group.

Abstract: The invention is directed to the use of compounds of formula (I), as fragrant agents. In this formula: —R3 and R4 are independently a hydrogen atom, a C1-C6 alkyl group or a C2-C6 alkenyl group, R5 is a C1-C6 alkyl group, a C2-C6 alkenyl group or a (CH2)0-2-aryl group, R6 is a C1-C6 alkyl group, a C2-C6 alkenyl group, a (CH2)0-2-aryl group or a C5-C6 cycloalkyl or cycloalkenyl group, and R7 is a hydrogen atom, a C1-C6 alkyl group or a C2-C6 alkenyl group; or R3, R4 and R5 are as above defined, and R6 and R7 together with the carbon atom to which they are attached form a C5-C6 cycloalkyl or cycloalkenyl group.

Abstract: A process of preparing a compound of formula (I) wherein R represents a linear or branched C5 alkyl group, as well as the use of such compounds in a fragrant and/or flavouring composition.

Abstract: Pyran derivatives of general formula (I) wherein Y is a 5-, 6- or 7-membered ring, preferably a 5-membered ring, methyl or ethyl mono- or polysubstituted, and optionally unsaturated, and R1, R2, R3, R4 are, each independently, a hydrogen atom or a linear or branched C1-5 alkyl or C2-5 alkenyl group, and X is present or absent; when X is present, R5, R6, R7, R8, R9 are all present, and X is a hydrogen atom or an OZ group, wherein Z is a hydrogen atom or a R10 group or a C(O)R10 group; when X is absent, a double bond involving the carbon atom at the 4 position is present and R7, R8 and R9 are present, and one of R5 or R6 is present and the other one is absent, or R5, R6, and R7 are present, and one of R8 or R9 is present and the other one is absent, or R7 is a ?C(R11)(R12) group and R5, R6, R8, R9 are present; and when they are present, each of R5-R12 group is, independently, a hydrogen atom or a linear or branched C1-5 alkyl or C2-5 alkenyl group; and use of at least one pyran derivative of formula (I)

Abstract: A process of preparing a compound of formula (I) wherein R represents a linear or branched C5 alkyl group, as well as the use of such compounds in a fragrant and/or flavouring composition.

Abstract: This invention relates to campholenic derivatives of general formula (I) Wherein R1, R2, R3, R4 and R5 represent, each independently, a hydrogen atom or a linear or branched C1-C5 alkyl or C2-C5 alkenyl group, Y represents a CN, a C(O)R6 or a CR6(OR?) (OR?) group, wherein R6 represents a hydrogen atom or a linear or branched C1-C5 alkyl or C2-C5 alkenyl group, and R? and R? represent simultaneously a linear or branched C1, C2, C3, C4 or C5 alkyl or C2, C3, C4 or C5 alkenyl group and can form together a cycle, the 5-membered ring is saturated or has a double bond between C3? and C4? in formula (I), and the side chain, optionally, has a double bond between C1 and C2 and/or between C3 and C4, provided that the derivative is not 3-methyl-6-(2,2,3-trimethyl-cyclopent-3-enyl)-hex-4-enal; and their use as fragrant or flavouring agent.

Abstract: Pyran derivatives of general formula (I) wherein Y is a 5-, 6- or 7-membered ring, preferably a 5-membered ring, methyl or ethyl mono- or polysubstituted, and optionally unsaturated, and R1, R2, R3, R4 are, each independently, a hydrogen atom or a linear or branched C1-5 alkyl or C2-5 alkenyl group, and X is present or absent; when X is present, R5, R6, R7, R8, R9 are all present, and X is a hydrogen atom or an OZ group, wherein Z is a hydrogen atom or a R10 group or a C(O)R10 group; when X is absent, a double bond involving the carbon atom at the 4 position is present and R7, R8 and R9 are present, and one of R5 or R6 is present and the other one is absent, or R5, R6, and R7 are present, and one of R8 or R9 is present and the other one is absent, or R7 is a ?C(R11)(R12) group and R5, R6, R8, R9 are present; and when they are present, each of R5-R12 group is, independently, a hydrogen atom or a linear or branched C1-5 alkyl or C2-5 alkenyl group; and use of at least one pyran derivative of formula (I)

Abstract: The present invention provides a fragrance precursor of formula I: that is capable of forming a fragrant ketone of formula II: and a fragrant lactone of formula III:

Abstract: The present invention is a fragrance precursor of formula I: for a fragrant ketone of formula II: and a fragrant ester of formula III: wherein, R1 to R5 represent independently H, —NO2, linear or branched C1-C6-alkyl, C1-C6-alkenyl, C1-C6-alkinyl or C1-C4-alkoxy, R1 and R2,R2 and R3, R3 and R4, and R4 and R5 may form together one or two aliphatic or aromatic rings, R6 and R7 are independently H, linear or branched C1-C6-alkyl-, C1-C6-alkenyl, C1-C6-alkinyl, and R8 and R9 are the residues of an acid R8-COOH and an alcohol R9OH respectively forming the fragrant ester of formula III. A method for providing an odor by admixing with a product a fragrance precursor as detailed above.

Abstract: The present invention is a fragrance precursor of formula I: 1

Abstract: The present invention provides a fragrance precursor of formula I: 1