2-n-Hexylcyclopentanone

Description

2-N-hexylcyclopentanone is less spicy or Celery-like than Jasmone, more sharp-fruity or green, and not quite as powerful. Rather than considering it as a lowcost substitute for Jasmone, it would be better to use it as an individual fragrance material with effects of its own. It will lend considerable floral-herbaceous power to fragrances other than the typical floral ones, and itmay participate in giving Jasmin effect when blended with suitable components.

Preparation

2-N-hexylcyclopentanone is prepared:
1) by condensation of Hexaldehyde and CycIopentanone, followed by hydrogenation of the condensation product.
2) by hydrogenation of the reaction mixture from Lactonization of Undecylenic acid with Phosphoric or Polyphosphoric acid.

Synthesis Reference(s)

Journal of the American Chemical Society, 98, p. 248, 1976 DOI: 10.1021/ja00417a048