Abstract: A method for the manufacture of an ?,?-unsaturated ketone, which method comprises oxidizing an alkene having —CH2— adjacent a carbon-carbon double bond to ?,?-unsaturated ketone by passing air or oxygen through a solution of the hydrocarbon containing a catalyst consisting of N-hydroxyphthalimide (NHPI) and cobalt diacetate tetrahydrate at standard temperature and pressure during a period of at least 12 hours.

Abstract: There is provided the use of selenide derivatives of fragrance compounds comprising an ?,?-unsaturated aldehyde moiety, an ?,?-unsaturated ketone moiety, an ?,?-unsaturated ester moiety, an ?,?-unsaturated lactone moiety or an ?,?-unsaturated carboxylic acid moiety in consumer products. There are further provided methods for the synthesis of selenide derivatives, certain selenide derivatives, consumer products comprising the selenide derivatives and methods of perfuming an article or surface using such derivatives.

Abstract: The invention provides a method for disinfection or the inhibition of microbial growth in the air, freshening and perfuming of the air, being based on the emission of particles into the air of a disinfecting composition based on essential oils and/or their active ingredients their mixtures with glycols and/or glycol ethers in variety of proportions. In accordance with the method of the invention, the particles emitted into the air which it is sought to disinfect, freshen and perfume, are produced using the evaporation of the liquid composition, through a wick indirectly heated to a temperature of less than 100° C. in its upper area.