Aldehyde C-8

Other comments :

Aldehyde C-8, on the contrary to Aldehyde C-7, has a direct aldehydic smell. comparing it to Aldehyde C-9, the latter has more zesty and fresh facets. Aldehyde C-8 is more neutral.

Stability :

Aldehydes may form diethylacetals in alcoholic perfumes, with no real impact on their smell

Uses in perfumery :

Aldehyde C-8 is used in floral-aldehydic notes, citrus reproductions and top notes in general for the aldehydes metallic characteristic note. Top notes booster.

Year of discovery :

Data not available.

Isomerism :

1,3 Octenol and Methyl Hexyl Ketone are constitutional isomers of Aldehyde C-8. However, their smell is very different, as they are more earthy and reminiscent of mushroom.

Synthesis precursor :

Aldehyde C-8 forms a Schiff base by reaction with Methyl Anthranilate or Indole for example. It can also be used for condensation with another aldehyde or ketone to form the desired alcene.

Natural availability :

Aldehyde C-8 is naturally present in many citrus extracts such as Bergamot EO or Sweet Orange EO, from which it can be extracted.

Synthesis route :

Aldehyde C-8 is an aliphatic aldehyde. Like the other aldehydes, it can be synthesized by reaction of octyl halides (chloride, for example) and dimethyl sulfoxide (DMSO), followed by an alkaline treatment with sodium bicarbonate. Other synthetic routes exist such as a reduction of Rosenmund from octylic acid, using an acid chloride.