Photolabile pro-fragrances

摘要

Fragrances having a fresh character are usually very volatile and therefore not very economical in typical applications such as washing or cleaning processes for example. For that reason they have to be used in relatively large amounts in order to bring about appropriate effects. The present invention describes photolabile pro-fragrances that allow for a greatly improved persistence of the fragrance impression, in particular one having a fresh character, in typical applications. A more economical use of the fragrances in question can be ensured in this way.

主权项

1. A ketone of the general formula (I), wherein at least two of the residues R in formula (I), in each case independently, denote the residue b shown in square brackets,wherein the residue R4 denotes an optionally substituted hydrocarbon residue having at least 5 C atoms;
and wherein the remaining residues R in formula (I), independently of one another, each denote hydrogen, a halogen atom, —NO2, a linear or branched, substituted or unsubstituted alkoxy group having 1 to 15 C atoms, a linear or branched, substituted or unsubstituted alkyl group having 1 to 15 C atoms, an aryl residue, a cycloalkyl residue, acyl residue, —OH, —NH alkyl, —NH2 or —N(alkyl)2.