Photolabile pro-fragrances

A compound of the general formula (I),

• wherein R denotes a substituted hydrocarbon residue with 2 to 20 C atoms, having at least one carbonyl group or ester group,
• R1, R2 each, independently of one another, denote hydrogen, a linear or branched, substituted or unsubstituted alkoxy group with 1 to 15 C atoms, a linear or branched, substituted or unsubstituted alkyl group or alkenyl group with 1 to 15 C atoms or a substituted or unsubstituted aryl residue,
• R3, R4, R5, R6 and R7 each, independently of one another, denote hydrogen, an amino group, —NO2, a linear or branched, substituted or unsubstituted alkoxy group with 1 to 15 C atoms, a linear or branched, substituted or unsubstituted alkyl group with 1 to 15 C atoms, a cycloalkyl residue, acyl residue, aryl residue, —OH, —NH2, halogen, NH-alkyl or —N(alkyl)2, and wherein at least one of the residues R3, R4, R5, R6, R7 denotes a quaternary ammonium residue of formula (II),
• wherein
• A denotes a CH2 or a CH2CH2O group with n=1 to 20 and
• B denotes oxygen with m=0 or 1, wherein m=0 if A is a CH2CH2O group and R8, R9, R10 each, independently of one another, denote H or a substituted or unsubstituted, alkyl, cycloalkyl, alkenyl, aryl or acyl group-containing residue, and wherein two of the residues R8, R9, R10 can in each case be joined together by ring closure.