85244-23-1Relevant academic research and scientific papers
A New Rearrangement of Alkoxybenzyl Anions
Bates, Robert B.,Siahaan, Teruna J.,Suvannachut, Kessara
, p. 1328 - 1334 (2007/10/02)
Alkyl groups migrate from oxygen to carbon in alkyl aryl ethers which have been metalated in benzylic positions. 2,6-Dimethylanisole provides a variety of 2,6-dialkylphenols and their ethers in 45-80percent yields.Rearrangement products are obtained in 10-30percent yields from other dimethylanisoles and from methylanisoles.The reactions appear to proceed, like Wittig rearrangements, by homolytic cleavage of the alkyl-oxygen bond followed by recombination of the resulting radical pair in a different way.The rearrangements can be avoided by using methyl ethers and working at or below room temperature.
Substituted spirocyclic derivatives
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, (2008/06/13)
The present invention relates to substituted spirocyclic derivatives having the general formula: STR1 wherein the dotted line represents a carbon-carbon double bond or a carbon-carbon single bond, wherein R1, R2, R3, R4, R5, and R6 are each the same or different, hydrogen or lower alkyl, wherein Z is one of the following: STR2 wherein R7 is either hydrogen or lower alkyl, wherein R8 and R9 are each lower alkyl; their methods of preparation and their use as odor-modifying ingredients in perfumes and perfumed products, and as flavor-modifying ingredients in the flavoring of foodstuffs and tobacco products.
Process for the production of spirodienones and spirocyclic ketones
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, (2008/06/13)
This invention concerns processes for preparing compounds having the structure STR1 wherein each of R1, R2, R3, R4, R5 and R6 is the same or different and represents hydrogen or a lower alkyl group and wherein each dashed line represents a carbon-carbon single bond or a carbon-carbon double bond. Those compounds in which all three dashed lines represent carbon-carbon double bonds are prepared by reacting phenols and 2-alkylidene-1,4-disubstituted butanes. Selective reduction of these compounds yields those in which at least one dashed line represents a carbon-carbon single bond. Most of the compounds so prepared are new compounds. All are useful as fragrance materials either directly and/or in compositions and/or have useful fixative properties in fragrance compositions.
