Abstract: The present invention relates to the use of 6-isopropyl-3,9-dimethyl-1,4-dioxaspiro[4.5]decan-2-one, in the form of any one of its isomers or of a mixture thereof, as a perfuming or flavoring ingredient. The present invention also relates to the perfuming or flavoring compositions or articles containing the compounds. Compositions comprising 6-isopropyl-3,9-dimethyl-1,4-dioxaspiro[4.5]decan-2-one and at least one further compound having or imparting minty, fruity, and/or trigeminal organoleptic properties are also part of the present invention.

Abstract: The present invention refers to a process for the preparation of unsaturated ketones or aldehydes by pyrolysis of a lactone, in the presence of a reducing agent such as molecular hydrogen or a carboxylic acid, and in the presence of a catalyst, optionally supported, comprising at least one metal selected from the group consisting of Y, Ti, Cd, Mn, Zn, Sc and Zr.

Abstract: The present invention refers to a process for the preparation of unsaturated ketones or aldehydes by pyrolysis of a lactone, in the presence of a reducing agent such as molecular hydrogen or a carboxylic acid, and in the presence of a catalyst, optionally supported, comprising at least one metal selected from the group consisting of Y, Ti, Cd, Mn, Zn, Sc and Zr.

Abstract: The compounds of formula in which X is a C≡N group or a C(H)═O group and the C5-ring is either saturated or carries a double bond in one of the positions indicated by the dotted lines, or any mixture of two or more compounds of formula (I), are described. The compounds and mixtures were found to be useful as perfuming ingredients, with the compounds of the above formula in which X is a C≡N group and the C5-ring has a double bond in one of the positions indicated by the dotted lines, being particularly stable in aggressive media. The odor note of these compounds is quite close to that of citral, i.e. of the fresh-citrus type with green and lime connotations.

Abstract: The compounds of formula in which X is a C≡N group or a C(H)═O group and the C5-ring is either saturated or carries a double bond in one of the positions indicated by the dotted lines, or any mixture of two or more compounds of formula (I), are described. The compounds and mixtures were found to be useful as perfuming ingredients, with the compounds of the above formula in which X is a C≡N group and the C5-ring has a double bond in one of the positions indicated by the dotted lines, being particularly stable in aggressive media. The odor note of these compounds is quite close to that of citral, i.e. of the fresh-citrus type with green and lime connotations.

Abstract: The 2,5,6-trimethyl-2-heptanol described is a compound having an odor of the floral-freesia type, with a slightly fruity character. It is adapted to be used in practically all fields of modem perfumery. Thanks to its typical floral and woody taste, it is also a prized flavoring ingredient.

Abstract: New compounds of formula ##STR1## wherein symbol R represents a lower alkyl radical and use thereof as perfuming and flavoring ingredients. Process for the preparation of the said compounds.

Abstract: New compounds of formula ##STR1## wherein symbol R represents a lower alkyl radical and use thereof as perfuming and flavoring ingredients. Process for the preparation of the said compounds.

Abstract: Perfuming composition containing 3-phenyl-cyclohex-2-en-1-one as active ingredient. Process for the perfuming of cosmetic articles, soaps and detergents by making use of the said ketone compound.