54210-94-5Relevant articles and documents
Process for the alkylation of α, β-unsaturated aldehydes
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, (2008/06/13)
A process is described for the preparation of alpha substituted unsaturated aldehydes according to the reaction: STR1 wherein one of the dashed lines is a double bond and the other of the dashed lines is a single bond; wherein R1 is allyl or benzyl, R2 is one of alkyl, aryl, alkenyl or alkoxyalkyl and R3 and R4 are each hydrogen or alkyl, with the proviso that when R3 is alkyl the dashed line between the β carbon atom and the γ carbon atom represents a double bond and when R3 is hydrogen, either of the dashed lines is a double bond, wherein X is chloro or bromo, and wherein M is alkali metal, the reaction being carried out (1) using a phase transfer agent, and (2) in a two phase system. Also described is the novel compound, 2,4,7-trimethyl-2,6-octadienal having uses in altering, modifying or enhancing the organoleptic properties of foodstuffs, perfume compositions and perfumed articles.
