Changing the Odor Properties of Commercial Mixtures of α-Irones by Simple Chemical Transformations

Abstract
The sensory properties of commercial mixtures of α-irones were modified by means of simple chemical transformations, enriching the original mixtures in their content of γ-isomers. The sequence employed consisted of NaBH4 reduction, acetylation with Ac2O in pyridine, photoisomerization, saponification and MnO2 oxidation. New odor sensations can be elicited by manipulation of commercial odorants.