Abstract: The present invention relates to a compound of formula wherein R represents a methyl or an ethyl group, in the form of any one of its isomers or of a mixture thereof. The invention relates also to the use of such a compound as a perfuming ingredient capable of imparting a odorant note of the rose type. Moreover, the invention concern also the perfumed article or perfuming composition containing a compound according to the invention.

Abstract: The present invention concerns a compound or mixtures of compounds of formula wherein R represents a linear, branched or cyclic C1-3 hydrocarbon group, and the wavy line indicates that the substituents on the epoxide moiety may have a cis or trans configuration. One or more of these compounds can be used as perfuming ingredients.

Abstract: The present invention discloses keto derivatives of 5,5,6,7,8,8-hexamethyl-hexahydronaphthalene or keto-epoxy derivatives of 5,5,6,7,8,8-hexamethyl-octahydronaphthalene which are useful perfuming ingredients having a musky-earthy character.

Abstract: The present invention relates to the field of perfumery. More particularly, it concerns compounds comprising at least one ?-carbonate or ?-thio carbonyl moiety capable of liberating a perfuming molecule such as, for example, an ?,?-unsaturated ketone, aldehyde or carboxylic ester. The present invention concerns also the use of said compounds in perfiunery as well as the perfuming compositions or perfumed articles comprising the invention's compounds.

Abstract: The present invention relates to the field of perfumery. More particularly, it concerns compounds comprising at least one &bgr;-oxy or &bgr;-thio carbonyl moiety capable of liberating a perfuming molecule such as, for example, an &agr;,&bgr;-unsaturated ketone, aldehyde or carboxylic ester. The present invention concerns also the use of the compounds in perfumery as well as the perfuming compositions or perfumed articles comprising the invention's compounds.

Abstract: The present invention concerns a compound or mixtures of compounds of formula 1

Abstract: The present invention relates to a compound of formula 1

Abstract: The invention describes novel malonates and a process for using said malonates for the preparation of chiral epoxides of formula having a cyclanic (1R) configuration, the group in position 2 having a transconfiguration and the epoxy group having a cis-configuration with respect to the substituent in position 1 and wherein R is an alkyl group from C1 to C4, linear or branched, and R1 is an alkyl or an alkenyl group from C2 to C8, linear or branched. The above process comprises the rearrangement of malonate (VII) to malonate (VI) and the decarboxylation reaction of into an ester of formula followed by the stereoselective epoxidation of the thus-obtained compound.

Abstract: Epoxides of formula having a cyclanic (1R) configuration, the group in position 2 being in a trans configuration and the epoxy group being in a cis configuration with respect to that in position 1 of the ring, and in which R represents a lower alkyl group and R1 represents a saturated or unsaturated, linear or branched hydrocarbon group having from 1 to 8 carbon atoms, are useful molecules for the preparation of very prized perfuming ingredients. A process for the preparation of the epoxides (I) is also described.

Abstract: The compounds of formula ##STR1## in which R stands for a methyl or ethyl group, are used as perfume ingredients for the preparation of perfuming compositions and perfumed articles, to which they confer aromatic and thujonic notes. The compounds can be used in the form of a mixture of enantiomers or in an enantiomerically pure state. The invention also comprises original processes for the preparation of these compounds.

Abstract: Epoxides of formula ##STR1## having a cyclanic (1R) configuration, the group in position 2 being in a trans configuration and the epoxy group being in a cis configuration with respect to that in position 1 of the ring, and in which R represents a lower alkyl group and R.sup.1 represents a saturated or unsaturated, linear or branched hydrocarbon group having from 1 to 8 carbon atoms, are useful molecules for the preparation of very prized perfuming ingredients. A process for the preparation of the opoxides (I) is also described.

Abstract: The compounds of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines, are useful as perfuming ingredients for the preparation of perfuming compositions and perfumed articles, to which they impart a refreshing and natural chamomile-like character.

Abstract: A process for the preparation of novel compounds with a tetraline-type structure, which are useful as perfuming ingredients, is described.

Abstract: We disclose a novel nitrile, i.e. 5,6,7,8-tetrahydro-3,5,5,6,7,8,8-heptamethyl-2-naphthalenecarbonitrile, a perfuming ingredient having a musky, earthy odor, and which is remarkably stable in particularly aggressive media such as for instance antiperspirant bases. This compound may present itself as a racemate or in the form of one of its optically active isomers.Said isomers can be obtained from aldehydes, namely (-)-(6S,7S) and (+)-(6R,7R)-5,6,7,8-tetrahydro-3,5,5,6,7,8,8-heptamethyl-2-naphtalenecarba ldehyde, which aldehydes are not only useful as starting products for the preparation of the corresponding nitriles, but also as perfuming ingredients.

Abstract: A process for the preparation of novel compounds with a tetraline-type structure, which are useful as perfuming ingredients, is described.

Abstract: Compound of formula ##STR1## wherein a) indexes m and n are identical and stand each for an integer number equal to zero, symbols R.sup.1 and R.sup.2 are identical and represent each a hydrogen atom, or are different and represent each a hydrogen atom or a methyl radical, symbols R.sup.5 and R.sup.8 stand each for a methyl radical, symbols R.sup.6 and R.sup.7 can be identical or different and designate each a hydrogen atom or a methyl radical and, either symbol R.sup.4 represents a methyl radical and symbol R.sup.3 stands for a hydrogen atom or a methyl radical, or symbols R.sup.3 and R.sup.4 represent each a methylene radical belonging to a ring such as indicated by the dotted line, with the proviso that the following combinations are excluded:1. R.sup.1 =R.sup.2 =R.sup.3 =R.sup.6 =R.sup.7 =H, or2. R.sup.1 =R.sup.2 =R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or3. R.sup.2 =CH.sub.3 and R.sup.3 =R.sup.6 =R.sup.7 =H, or4. R.sup.2 =CH.sub.3 and R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or5. R.sup.1 =R.sup.

Abstract: Compound of formula ##STR1## wherein a) indexes m and n are identical and stand each for an integer number equal to zero, symbols R.sup.1 and R.sup.2 are identical and represent each a hydrogen atom, or are different and represent each a hydrogen atom or a methyl radical, symbols R.sup.5 and R.sup.8 stand each for a methyl radical, symbols R.sup.6 and R.sup.7 can be identical or different and designate each a hydrogen atom or a methyl radical and, either symbol R.sup.4 represents a methyl radical and symbol R.sup.3 stands for a hydrogen atom or a methyl radical, or symbols R.sup.3 and R.sup.4 represent each a methylene radical belonging to a ring such as indicated by the dotted line, with the proviso that the following combinations are excluded:1. R.sup.1 =R.sup.2 =R.sup.3 =R.sup.6 =R.sup.7 =H, or2. R.sup.1 =R.sup.2 =R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or3. R.sup.2 =CH.sub.3 and R.sup.3 =R.sup.6 =R.sup.7 =H, or4. R.sup.2 =CH.sub.3 and R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or5. R.sup.1 =R.sup.

Abstract: Compound of formula ##STR1## wherein a) indexes m and n are identical and stand each for an integer number equal to zero, symbols R.sup.1 and R.sup.2 are identical and represent each a hydrogen atom, or are different and represent each a hydrogen atom or a methyl radical, symbols R.sup.5 and R.sup.8 stand each for a methyl radical, symbols R.sup.6 and R.sup.7 can be identical or different and designate each a hydrogen atom or a methyl radical and, either symbol R.sup.4 represents a methyl radical and symbol R.sup.3 stands for a hydrogen atom or a methyl radical, or symbols R.sup.3 and R.sup.4 represent each a methylene radical belonging to a ring such as indicated by the dotted line, with the proviso that the following combinations are excluded:1. R.sup.1 =R.sup.2 =R.sup.3 =R.sup.6 =R.sup.7 =H, or2. R.sup.1 =R.sup.2 =R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or3. R.sup.2 =CH.sub.3 and R.sup.3 =R.sup.6 =R.sup.7 =H, or4. R.sup.2 =CH.sub.3 and R.sup.3 =H and R.sup.6 or R.sup.7 =CH.sub.3, or5. R.sup.1 =R.sup.

Abstract: A process for the preparation of undeca-1,3,5-triene, a prized perfuming ingredient, in two, respectively three, steps starting from sorbic acid, which makes it possible to obtain said compound in its undeca-1,3E,5Z preferred isomeric form, is disclosed.

Abstract: The decalin ketones of formula ##STR1## having a single or double bond in one of the positions indicated by the dotted lines, or two double bonds in positions 2 and 5 or 3 and 5 such as indicated by the dotted lines, and wherein symbols R.sup.1, R.sup.2 and R.sup.3 represent a hydrogen atom or a methyl radical, are useful as perfuming ingredients for the preparation of perfuming compositions and perfumed articles, to which they impart woody-amber odor notes.A process for the preparation of these ketones is also disclosed.