Suggested is fragrance composition comprising or consisting of a selection of specific nitriles showing improved stability against decomposition and discoloration.

The present invention relates to new malodour-counteracting agents of formula (I) or stereoisomers thereof, particularly useful in blocking the olfactory perception of androstenone, Formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and X have the same meaning as that defined in the claims. The present invention also relates to consumer products comprising said agents. The present invention also relates to the use of said agents to suppress or attenuate undesirable odour, as well as to methods to suppress or attenuate undesirable odour employing said compounds.

##STR00001##

The present application relates to perfume raw materials, perfume delivery systems and consumer products comprising such perfume raw materials and/or such perfume delivery systems, as well as processes for making and using such perfume raw materials, perfume delivery systems and consumer products. Such perfume raw materials and compositions, including the delivery systems, disclosed herein expand the perfume communities' options as such perfume raw materials can provide variations on character and such compositions can provide desired odor profiles.

Pro-fragrances may have the formula (I) as disclosed herein. Compositions may include the pro-fragrances, such as a laundry product, a home care product, and an insect repellant. A method for preparing the compound of formula (I) are also disclosed. Such pro-fragrances increase the longlastingness of a fragrance, the stability of a fragrance, and the adhesion of a fragrance.

The present invention relates to new malodour-counteracting agents of formula (I) or stereoisomers thereof, particularly useful in blocking the olfactory perception of androstenone, Formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and X have the same meaning as that defined in the claims. The present invention also relates to consumer products comprising said agents. The present invention also relates to the use of said agents to suppress or attenuate undesirable odour, as well as to methods to suppress or attenuate undesirable odour employing said compounds. ##STR00001##

A process of preparing 2-cyclohexyliden-2-phenyl acetonitrile or odoriferous structural analogs thereof, represented by Formula I:

##STR00001##

wherein the variables are as defined in the specification, is provided. The process utilizes a phase transfer catalyst, is performed at a temperature lower than 80 C., and provides odoriferous substances at a high yield and purity. Odoriferous substances obtainable by the process, and odor-imparting formulations and articles-of-manufacturing containing same are also provided

The present invention relates to new malodour-counteracting agents of formula (I) or stereoisomers thereof, particularly useful in blocking the olfactory perception of androstenone, Formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and X have the same meaning as that defined in the claims. The present invention also relates to consumer products comprising said agents. The present invention also relates to the use of said agents to suppress or attenuate undesirable odour, as well as to methods to suppress or attenuate undesirable odour employing said compounds.

##STR00001##

5,9-dimethyl-9-hydroxy-decen-4-al, having the formula (I) ##STR00001##

The present application relates to perfume compositions, delivery systems comprising such perfumes products comprising such perfumes and/or delivery systems, and processes for making and using same. Such perfumes and delivery systems provide improved perfume performance under high soil conditions and in cold water washing and a shell that at least partially surrounds said core.

The present invention relates to a process for the preparation of organic-inorganic microcapsules, with a flavor or fragrance core and a hybrid shell composed of at least two types of inorganic particles that are cross-linked. Microcapsules obtained by said process are also an object of the invention. Consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.