BACKGROUND OF THE INVENTION
The present invention provides the compounds 1-(2-methyl-2-propenyl)-3-(4-methyl-3-pentenyl)-.DELTA..sup.3 -cyclohexene-1-carboxaldehyde and 1-(2-methyl-2-propenyl)-4-(4-methyl-3-pentenyl)-.DELTA..sup.3 -cyclohexene-1-carboxaldehyde and a straight-forward, economical