56973-87-6Relevant articles and documents
Isomer-directed process for producing asymmetric ketones using catalytic Claisen rearrangement of allylic ethers, intermediates, and uses of products and intermediates of process in perfumery
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, (2008/06/13)
Described is an isomer-directed process for producing asymmetric ketones defined according to the generic structure: STR1 wherein one of Z1 or Z2 is the moiety: STR2 and the other of Z1 or Z2 is hydrogen; wherein R11 and R21 represent hydrogen or the same or different alkyl or alkenyl with the proviso that R11 and R21 are not both hydrogen or wherein R11 and R21 taken together: (i) complete a cycloalkyl, cycloalkenyl, bicycloalkyl, mono or polyalkyl cycloalkyl or mono or polyalkyl cycloalkenyl ring, or (ii) represent alkylidene, cycloalkenyl alkylidene, aralkylidene, mono or polyalkyl cycloalkenyl alkylidene or mono or polyalkyl aralkylidene; and wherein R6, R7 and R8 are the same or different and each represents hydrogen or methyl, using a catalytic Claisen rearrangement of allylic ethers previously formed by reacting substituted or unsubstituted allylic alcohols defined according to the structure: STR3 with dialkyl ketals defined according to the structure: STR4 wherein R4 and R5 represent the same or different C1 -C4 alkyl. Also described are compounds and processes for using same in perfumery defined according the structures: STR5 Also described are certain diallylic ethers defined according to the generic structure: STR6
Process for preparing 1(4-pentonoyl)-3,3-dimethylcyclohexane and intermediates used in a said process
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, (2008/06/13)
A process comprising the steps of reacting 1-acetyl-3,3-dimethylcyclohexane with an alkyl acetate, thereby forming a diketone having the structure: STR1 reacting the said diketone with an allyl halide to form a substituted diketone having the structure: S
Process for producing substituted-1-acetyl-3,3-dimethylcyclohexane
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, (2008/06/13)
Described is a process for preparing a genus of substituted 1-acetyl-3,3-dimethylcyclohexanes having the structure: STR1 wherein R1 or one or both of R2 and/or R3 is allyl or methallyl and the other of R1 or R2 and/or R3 is hydrogen, a process for preparing same by means of reacting an allyl or a methallyl halide with acetyl-3,3-dimethyl-cyclohexane using a base according to the reaction: STR2 wherein R is allyl or methallyl and wherein X is chloro or bromo. When such 1-acetyl-3,3-dimethylcyclohexane derivatives are added to consumable materials: (i) In foodstuffs and medicinal products, pineapple, allyl caproate-like, galbanum, woody, fatty, sweet, fruity, citrus, green and vegetable-like aromas and rosey, ionone, Oriental-like, woody, fatty, sweet, fruity, citrus, vegetable-like and waxy flavor characteristics are augmented or enhanced; (ii) In perfumes and perfumed articles, sweet, earthy, animal, green, herbaceous, melony and fruity aromas with pineapple, ambery, galbanum-like, ginger-like and citrusy nuances and tobacco/animal notes are imparted, augmented and/or enhanced; and (iii) In tobaccos and tobacco flavors, green, sweet, fruity, floral and Virginia tobacco-like flavor and aroma nuances are augmented and/or enhanced in the main stream and in the side stream on smoking and, in addition, prior to smoking.
