Embodiments in accordance with the present invention relate generally to a variety of norbornene derivatives exhibiting olfactive properties and are suitable as fragrance ingredients. More specifically, this invention relates to various fragrance compositions containing one or more of a compound of formula (I): ##STR00001##
Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined herein. The compounds of formula (I) are useful as perfumes, colognes, and in perfume augmenting, modifying, enhancing, and imparting compositions. The compositions of this invention are therefore useful in a variety of products including perfumes, colognes, soaps, detergents, candles, air fresheners, trash bags, tissues, deodorants, lotions, skin care products, hair products, sanitary products, cleaning products, and the like.

An encapsulated perfume composition wherein the shell contains a polyurea resin and the core contains a perfume comprising an aldehyde-containing perfume ingredient or ingredients, a non-aromatic cyclic perfume ingredient, and an alkyl salicylate and/or a 2,2,2-trisubstituted acetal,

Described herein is a process including alpha alkylation of an aldehyde with a polycyclic olefin followed by a ring opening step in order to provide a compound of formula ##STR00001##
in a form of any one of its stereoisomers or a mixture thereof and where n represents 1 to 4 and R.sup.2 to R.sup.5 represent independently of each other, a hydrogen atom or a C.sub.1-6 linear alkyl group or a C.sub.3-6 branched alkyl group; and R.sup.3 and R.sup.4 or R.sup.5 or, alternatively, R.sup.2 and R.sup.3 when taken together form a saturated or unsaturated optionally substituted 5 or 6 membered carbocyclic ring.

Described herein is a process including alpha alkylation of an aldehyde with a polycyclic olefin followed by a ring opening step in order to provide a compound of formula

##STR00001##

in a form of any one of its stereoisomers or a mixture thereof and where n represents 1 to 4 and R.sup.2 to R.sup.5 represent independently of each other, a hydrogen atom or a C.sub.1-6 linear alkyl group or a C.sub.3-6 branched alkyl group; and R.sup.3 and R.sup.4 or R.sup.5 or, alternatively, R.sup.2 and R.sup.3 when taken together form a saturated or unsaturated optionally substituted 5 or 6 membered carbocyclic ring.

The present invention relates to the field of organic synthesis and more specifically it concerns a novel compound of formula (I). The invention additionally relates to a process for preparing a compound of formula (III) using the compound of formula (I) as an intermediate, wherein the process involves elimination of the R3(X)nC(O)O functional group of the compound of formula (I).

Embodiments in accordance with the present invention relate generally to a variety of norbornene derivatives exhibiting olfactive properties and are suitable as fragrance ingredients. More specifically, this invention relates to various fragrance compositions containing one or more of a compound of formula (I):

##STR00001##

Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined herein. The compounds of formula (I) are useful as perfumes, colognes, and in perfume augmenting, modifying, enhancing, and imparting compositions. The compositions of this invention are therefore useful in a variety of products including perfumes, colognes, soaps, detergents, candles, air fresheners, trash bags, tissues, deodorants, lotions, skin care products, hair products, sanitary products, cleaning products, and the like.

Embodiments in accordance with the present invention relate generally to a variety of norbornene derivatives exhibiting olfactive properties and are suitable as fragrance ingredients. More specifically, this invention relates to various fragrance compositions containing one or more of a compound of formula (I): ##STR00001##
Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined herein. The compounds of formula (I) are useful as perfumes, colognes, and in perfume augmenting, modifying, enhancing, and imparting compositions. The compositions of this invention are therefore useful in a variety of products including perfumes, colognes, soaps, detergents, candles, air fresheners, trash bags, tissues, deodorants, lotions, skin care products, hair products, sanitary products, cleaning products, and the like.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

Embodiments in accordance with the present invention relate generally to a variety of norbornene derivatives exhibiting olfactive properties and are suitable as fragrance ingredients. More specifically, this invention relates to various fragrance compositions containing one or more of a compound of formula (I):

##STR00001##

Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined herein. The compounds of formula (I) are useful as perfumes, colognes, and in perfume augmenting, modifying, enhancing, and imparting compositions. The compositions of this invention are therefore useful in a variety of products including perfumes, colognes, soaps, detergents, candles, air fresheners, trash bags, tissues, deodorants, lotions, skin care products, hair products, sanitary products, cleaning products, and the like.

The present invention relates to the field of organic synthesis and more specifically it concerns a novel compound of formula (I) which could be used as a novel intermediate in the process for the preparation of compound of formula (III).