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).

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).

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).

The present invention relates to novel compounds and their use as fragrance materials.

The present invention relates to novel compounds and their use as fragrance materials.

The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV): ##STR00001##
wherein R.sup.1 represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).

The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV): ##STR00001##
wherein R.sup.1 represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).

The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A. ##STR00001##

The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A. ##STR00001##

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).