Abstract: The use of acetals as aldehyde generators in foodstuff applications is disclosed.

Abstract: A novel class of alpha-keto geminal diacyloxy compounds is disclosed. These compounds are useful as vicinal diketone generators in foodstuffs. Use for this purpose is also disclosed.

Abstract: The use of acetals as aldehyde generators in foodstuff applications is disclosed.

Abstract: Oximes of propene trimers and propene tetramers are disclosed which are new compositions of matter. These oximes are useful as perfume components in, e.g., colognes and perfumes and as fragrances in detergents and cosmetics.

Abstract: Alpha, beta-dialkyl conjugated nitriles are disclosed which have interesting perfumistic qualities. These materials have the general structural formula ##STR1## where R is an aliphatic hydrocarbon radical of about 1 to 15 carbon atoms having no unsaturation in conjugated relationship with either the nitrile unsaturation or the alpha, beta-olefinic unsaturation, and R' and R" are the same or different aliphatic hydrocarbon radicals meeting the description of R, or R' and R", taken together, form a cycloaliphatic radical having about 6 to 15 carbon atoms. They are produced by the reaction of the appropriate aliphatic nitrile and ketone under the influence of a basic catalyst.

Abstract: Novel cyclohexene-3 nitriles are disclosed as perfumery ingredients.

Abstract: Perfume compositions are disclosed containing, as an odorant, propene trimer alcohols or esters of such alcohols with 1 to 4 carbon monocarboxylic acids.

Abstract: A process is provided for preparing methyl heptenone from mesityl oxide or acetone or mixtures thereof in improved yield.Mesityl oxide is reacted with prenyl chloride to form a ketone mixture comprising mixed prenyl-substituted methyl pentenones, which is then separated from the residual reaction mixture by distillation, subjected to hydrolytic cracking with water in the presence of alkali at an elevated temperature, and methyl heptenone recovered.The same ketone mixture is found as a by-product of the reaction of acetone with prenyl chloride in the presence of a catalyst to form methyl heptenone. This can therefore be subjected to the hydrolytic cracking reaction, thus increasing the amount of methyl heptenone produced.

Abstract: A process is provided for the preparation of .alpha.,.beta. -unsaturated nitriles by reaction of a ketone and acetonitrile in the presence of a base. Many of the .alpha.,.beta. -unsaturated nitriles thus prepared are novel compounds, and all are useful in perfumery. Perfume compositions also are provided, containing effective amounts of such .alpha.,.beta. -unsaturated nitriles.