10413-01-1Relevant academic research and scientific papers
Ketone precursors for organoleptic compounds
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, (2008/06/13)
The invention discloses ketones of formula I: wherein, Y is an optionally substituted alkyl, cycloalkyl, or cycloalkylalkyl, wherein each alkyl group is straight or branched and each alkyl and cycloalkyl group is saturated or unsaturated; R1is hydrogen or a C1-6alkyl group that is substituted, saturated or unsaturated, straight or branched; A is a chromophoric substituted aromatic ring or ring system; n is an integer; and with the proviso that formula I is not 2-ethoxy-1-phenyl-ethanone. These compositions are useful for the delivery of organoleptic compounds, especially of flavors, fragrances, masking agents and antimicrobial compounds.
Preparation and Reaction of Pyridones: Steric and Electronic Effects on Cycloadditions with 2(1H)-Pyridones
Gisby, Graham P.,Royall, Sven E.,Sammes, Peter G.
, p. 169 - 174 (2007/10/02)
The reactions of series of substituted 2(1H)-pyridones with dimethyl butynedioate have been studied.Cycloadditions across the 3,6-positions can be observed in certain instances and are particularly favoured where steric buttressing occurs between the substituent groups of the starting pyridones.The pyridone could not be induced to react with simple olefins, either by intermolecular or, via incorporation of alkenyl substituents, by intramolecular processes.From the results it is shown that 2-pyridones can be encouraged to behave as reactive classical dienes in cycloaddition reactions.
