WE CLAIM:
1. Fragrance, flavor and/or deodorizing/masking compositions comprising an oxime
selected from compounds of formula (7) or of formula (8)

wherein R is an alkyl group having from 1 to 9 carbon atoms, an alkenyl group containing only one carbon-carbon double bond (said carbon-carbon double bond being preferably not conjugated with the oxime C=N bond) and having up to 9 carbon atoms, a (substituted) aryl group having up to 8 carbon atoms, an oxo-alkyl group having up to 9 carbon atoms, or an alkoxyaryl group containing up to 9 carbon atoms or (substituted) benzyl group having up to 9 carbon atoms.
2. Fragrance, flavor and/or deodorizing/masking compositions according to claim 1 wherein R is methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, t-butyl, i-butyl, 2-pentyl, 3-pentyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, l-(cyclohexylmethyl), (methoxy)methyl, (ethoxy)methyl, 3-butenyl, 5-(2-methylpent-2-en)yl, 4-pent-2-enyl, 4-pent-1-enyl, 5-(2,5-dimethylhex-2-en)yl, benzyl, phenyl, or 4-methoxyphenyl.
3. Fragrance, flavor and/or deodorizing/masking compositions according to claim 1 wherein the oxime is selected from
Structure Chemical name

4. Fragrance, flavor and/or deodorizing/masking compositions according to any of the preceding claims wherein the content of the compounds of formula (7) and/or of formula (8) is comprised between 0.00001 and 99.9 vvt. %, for example between 0.0001 and 95 wt%.
5. Fragrance, flavor and/or deodorizing/masking compositions according to any of the preceding claims additionally comprising at least one ester and/or one alcohol, preferably at least a mixture of ester and alcohol.
6. Fragrance, flavor and/or deodorizing/masking compositions according to the previous claim wherein the total content of the compound(s) of formula (7) and/or of formula (8) together with the ester(s) and/or alcohol(s) is superior to 25 wt%, preferably superior to 50wt%, for example superior to 75wt%, or even superior to 90wt%.
7. Fragrance, flavor and/or deodorizing/masking compositions according to any of the preceding claims comprising a mixture of oxime compounds according to formula (7) and/or formula (8) wherein the weight ratio between the oxime present in highest weight and the oxime present in the second highest weight in the mixture is comprised between 99.9% and 50%, for example between 99% and 70%.
8. Fragrance, flavor and/or deodorizing/masking compositions according to any of the preceding claims additionally comprising at least one ketone compound of formula (5) and/or(6)


wherein R is an alkyl group having from 1 to 9 carbon atoms, an alkenyl group containing only one carbon-carbon double bond having up to 9 carbon atoms, an (substituted) aryl group having up to 9 carbon atoms, an oxo-alkyl group having up to 9 carbon atoms, an alkoxyaryl group containing up to 9 carbon atoms or a (substituted) benzyl group having up to 9 carbon atoms.
9. Fragrance, flavor and/or deodorizing/masking compositions according to claim 8
wherein the radical R of an oxime compound is identical to the radical R of a ketone
compound,
10. Fragrance, flavor and/or deodorizing/masking compositions according to any of claims
8 or 9 wherein the weight ratio between the oxime(s) and the ketone(s) is comprised
between 0.01% and 99.99%, for example 80% and 99%.
11. Oxime useful in a fragrance, flavor and/or deodorizing/masking composition
according to any of the preceding claims wherein the oxime is selected from compounds of
formula (7) or of formula (8)

wherein R is an alkyl group having from 2 to 9 carbon atoms, an alkenyl group containing only one carbon-carbon double bond (said carbon-carbon double bond being preferably not conjugated with the oxime C=N bond) and having up to 9 carbon atoms, an (substituted) aryl group having up to 9 carbon atoms, an oxo-alkyl group having up to 9 carbon atoms, an alkoxyaryl group containing up to 9 carbon atoms or a (substituted) benzyl group having up to 9 carbon atoms.
12. Oxime according to claim 11 wherein R is ethyl, n-propyl, i-propyl, n-butyl, s-butyl,
t-butyl, i-butyl, 2-pentyl, 3-pentyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, 1-
(cyclohexylmethyl), (methoxy)methyl, (ethoxy)methyl, 3-butenyl, 5-(2-methylpent-2-en)yl,

4-pent-2-enyl, 4-pent-l-enyl, 5-(2,5-dimethylhex-2-en)yl, benzyl, phenyl, or 4-methoxyphenyl.
13. Oxime according to any of claims 11 to 12 wherein the compounds of formula (8) don't include those wherein R is phenyl.

15. Mixture of oxime compounds according to claims 11 to 14 wherein the weight ratio
between the oxime present in highest weight and the oxime present in the second highest
weight in the mixture is comprised between 99.9% and 50%, for example between 99% and
70%.
16. Process for the preparation of the oximes of formula (7) and/or of formula (8)
according to any of claims 11 to 15 by reacting
the ketones of formula (5) and/or of formula (6)

wherein R is an alkyl group having from 2 to 9 carbon atoms, an alkenyl group containing only one carbon-carbon double bond and having up to 9 carbon atoms, an (substituted) aryl group having up to 9 carbon atoms, an oxo-alkyl group having up to 9 carbon atoms, an alkoxyaryl group containing up to 9 carbon atoms or a (substituted) benzyl group having up to 9 carbon atoms

with a hydroxylamine salt (e.g. hydroxylamine hydrochloride) in the presence of an amine (e.g. pyridine, imidazole) and at a temperature lower than 80°C, preferably lower than 70°C, to form the oximes of formula (7) and/or of formula (8).
17. Process for the preparation of the oximes according to claim 16 wherein the reaction time is more than one day, preferably more than 3 days, for instance more than 7 days.
18. Process for the preparation of the oximes according to any of claims 16 to 17 wherein the compounds of formulae (5), (6), (7) and (8) are characterised in that R is an alkyl group having from 3 to 9 carbon atoms or an aryl group having from 6 to 9 carbon atoms.
19. Process for the preparation of the oximes according to any of claims 16 to 18 wherein
the compounds of formula (5) are prepared by subjecting 2,3-dimethylbutene(s) to an acylation reaction step, optionally followed by either an alkylation or an aldol condensation step, and/or
the compounds of formula (6) are prepared by subjecting 2,3-dimethylbutene(s) to an acylation reaction step, optionally followed by either an alkylation or an aldol condensation step, to form the compounds of formula (5) and by subjecting the said compounds of formula (5) to a hydrogenation reaction step to form the compounds of formula (6).
20. Use of a fragrance, flavor and/or deodorizing/masking composition according to any of claims 1 to 10 in a perfumed or flavored product.
21. Use of an oxime according to any of claims 11 to 15 in a perfumed or flavored product.