[EN] MIXTURES OF META AND PARA SUBSTITUTED 4-ISOBUTYL-CYCLOHEXANE AS AROMA INGREDIENT [FR] MÉLANGES DE 4-ISOBUTYL-CYCLOHEXANE MÉTA-SUBSTITUÉ ET PARA-SUBSTITUÉ EN TANT QU'INGRÉDIENT AROMATIQUE
[EN] 1-ALKOXYETHYL-3-ISOBUTYL-BENZENE AND 1-CARBOXYETHYL-3-ISOBUTYL-BENZENE AS AROMA INGREDIENTS<br/>[FR] 1-ALCOXYÉTHYL-3-ISOBUTYL-BENZÈNE ET 1-CARBOXYÉTHYL-3-ISOBUTYL-BENZÈNE UTILISÉS EN TANT QU'INGRÉDIENTS AROMATIQUES
申请人:BASF SE
公开号:WO2022073845A1
公开(公告)日:2022-04-14
The presently claimed invention is directed to the use of compound of formula (I) to impart an aroma impression to a composition. The presently claimed invention also relates to a method of imparting such aroma impression. The compositions of compound of formula (I) are also encompassed in the present invention. The present invention also relates to a compound of formula (I').
A method is provided for the production of 1-(4′-isobutylphenyl)ethanol (IBPE) comprising hydrogenating 4-isobutylacetophenone (IBAP) in the absence of a solvent using as a catalyst a treated activated sponge nickel catalyst, e.g., Raney nickel, obtained by subjecting such a catalyst wetted with a protective liquid composed preponderantly of water to a washing treatment with an organic washing liquid in which the aqueous protective liquid is substantially soluble and which is substantially soluble in IBAP or IBPE, e.g., a lower alkanol such as methanol, ethanol or isopropanol. The catalyst optionally may also be washed with IBAP or IBPE after the wash with the organic washing liquid and before being used in the hydrogenation reaction. The washing treatment results in substantially higher conversions IBAP and increased yields of IBPE with a practical reaction time.