Enol ether properfume

A method to release, from a precursor compound, compounds selected from the group consisting of

• a) a carbonyl compound of formula
• wherein when R2 represents a OR2′ wherein R2′ represents a C1-12 alkyl group, a C3-12 alkenyl group, a phenethyl group, or a benzyl group, then R1 is a phenyl group optionally substituted by one or two R1′ group wherein R1′, simultaneously or independently, represents a hydroxyl group, a C1-3 alkyl group, a C1-3 alkoxy group, a RaCOO group, a RaOCO group wherein Ra is a hydrogen atom, a C1-3 alkyl group, a C2-3 alkenyl group, or two adjacent RT, when taken together, represent a —O—(CH2)m—O— wherein m is 1 or 2 or form a C5-6 saturated or unsaturated ring;
• when R2 represents a C1-6 alkyl or a C6-10 aryl group each optionally substituted by a hydroxyl group, a C1-3 alkyl group, a C1-3 alkoxy group, then R1 represents a C1-15 alkyl, C3-15 alkenyl, C6-10 aryl, C3-15 cycloalkyl, C5-15 cycloalkenyl or C3-14 heterocycloalkyl group, each optionally substituted with one or more of a C1-15 alkyl, C1-15 alkoxy, C3-15 cycloalkyl, C5-15 cycloalkenyl, carboxylic acid, C1-4 carboxylic ester, C6-10 aryl and/or C6-10 aryloxy group, each optionally substituted with one or more of a C1-8 alkyl, C1-8 alkoxy, hydroxy, carboxylic acid and/or C1-4 carboxylic ester group;
• or
• R1 and R2, when taken together, form a C5-16 cycloalkyl, C5-16 cycloalkenyl, C4-14 heterocycloalkyl or C4-14 heterocycloalkenyl group, each optionally substituted with one or more of a C1-15 alkyl, C1-15 alkoxy, C3-15 cycloalkyl, C5-15 cycloalkenyl, C6-10 aryl and/or C6-10 aryloxy group, each optionally substituted with one or more of a C1-8 alkyl, C1-8 alkoxy, carboxylic acid and/or C1-4 carboxylic ester group, wherein the heteroatom represents one or more of an oxygen atom;
• b) a formate ester of formula
• wherein n represents an integer between 1 and 5;
• R3, simultaneously or independently, represents at least one substituent of the aromatic ring and is a C1-6 alkyl group optionally substituted by a hydroxy, C1-6 alkoxy or oxo group;
• a C4-7 oxacycloalkyl or oxacycloalkenyl group optionally substituted with a C1-3 alkyl or a methylene group;
• a C2-6 alkenyl group;
• a C1-6 alkoxy group;
• or a RbOCO group wherein Rb is a hydrogen atom, a C1-7 alkyl group, a C2-7 alkenyl group, a C3-7 cycloalkyl group, a benzyl group or a phenethyl group;
• and
• c) an alcohol of formula
• wherein R3 has the same meaning as defined above;
• wherein the precursor compound comprises a compound of formula (I)
• in the form of any one of its stereoisomers or a mixture thereof, and wherein n,
• R1, R2 and R3 have the same meaning as defined above;
• the method comprising exposing the precursor compound of formula (I) to an environment wherein the compound is oxidized.