Cyclohexylideneacetaldehyde

Cyclohexylideneacetaldehyde has been classified as “nondescript” and it is true that the material has an odor which is difficult to describe, but it should not be understood as ‘“bland” or “mild”. This aldehyde has been suggested for use in perfume compositions, but its high volatility makes it problematic except for usage in certain types of industrial masking odors, and the aldehyde is too expensive for such lowcost formulations.

Journal of the American Chemical Society, 99, p. 7365, 1977 DOI: 10.1021/ja00464a051
Tetrahedron Letters, 22, p. 2021, 1981 DOI: 10.1016/S0040-4039(01)92894-1

Cyclohexylideneacetaldehyde is produced by ozonolysis of l-Allylcyclohexan-l-ol.