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: ##STR00001##

The present invention relates to a compound of formula (I) and its use as an aroma chemical to impart a floral note, fruity note, herbal note, animalic note, sweet note, rose note, grapefruit note, gourmand note, natural note, powdery note, watery note, damascene like note, dried fruit note, woody note, spicy note, red berry like note, animalic note, minty note, musty note, earthy note, leather like note, nutty note, technical note, ambrinol note, or any combination of two or more of these impression to a composition. The present invention further relates to the use of compound of formula (I) as an aroma chemical to impart an aroma to a composition and also for enhancing and/or modifying the aroma of a composition. The present invention is further directed to a composition comprising at least one compound of formula (I) and (i) at least one aroma chemical different from the compound of formula (I) or (ii) at least one non-aroma chemical carrier, or (iii) both (i) and (ii).

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). ##STR00001##

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). ##STR00001##

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). ##STR00001##

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:

##STR00001##

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:

##STR00001##

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:

##STR00001##

The various aspects presented herein relate to the perfumery industry. More particularly, the various aspects presented herein relate to malodor counteracting compositions and/or ingredients, methods for counteracting malodors, as well as to the perfumed articles or perfuming compositions comprising as an active ingredient, at least one compound selected from the group consisting of: a compound of Formula (I), a compound of Formula (II), a compound of Formula (III), a compound of Formula (IV), and mixtures thereof.

A process for the preparation of a compound of formula (V):

##STR00001## comprising at least the step of reacting a compound of formula (VI)

##STR00002## with a compound (VII)

##STR00003## wherein; R.sub.2 is hydrogen or a C1-C20 hydrocarbyl radical provided that at least one R.sub.2 is not hydrogen; R.sub.5 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; R.sub.6 is hydrogen or a C1-20 hydrocarbyl group optionally containing one or more heteroatoms from groups 14-16; n is 1, 2 or 3; each R.sub.8 is a C1-20 hydrocarbyl group; and Hal is a halide; in the presence of a nickel imidazolidin-2-ylidene compound.