[EN] PROCESS FOR THE ISOMERISATION OF A CYCLOHEXENYL ALKYL OR ALKENYL KETONE<br/>[FR] PROCEDE D'ISOMERISATION D'UN ALKYLE CYCLOHEXENYLIQUE OU D'UNE CETONE ALCENYLIQUE
申请人:FIRMENICH & CIE
公开号:WO2005061426A1
公开(公告)日:2005-07-07
The present invention relates to a process for the carbon-carbon double bond isomerisation of a 2-alkyl-cyclohex-3-enyl alkyl or alkenyl ketone into a mixture comprising the corresponding 2-alkyl-cyclohex-2-enyl ketones and the corresponding 2-alkylene-cyclohexyl ketones, using as catalyst a ruthenium complex obtainable by the reaction of an appropriate ruthenium organometallic precursor and an acid.
Process for the preparation of alkenoyl-substituted cyclohexenes
申请人:Firmenich SA
公开号:US03931323A1
公开(公告)日:1976-01-06
New heterocyclic derivatives containing nitrogen useful for perfumery and the flavour industry and use of same as perfuming and/or flavouring ingredients in the manufacture of perfumes and perfumed products and/or in the preparation of artificial flavours for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products. Process for preparing the said heterocyclic derivatives which are equally useful as starting materials for preparing known fragrance compounds.
New cycloaliphatic unsaturated ketones and their use as perfuming and odour-modifying agents in the manufacture of perfumes and perfumed products, and as flavouring and taste-modifying agents in the preparation of foodstuffs in general and imitation flavours for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products. Methods for the preparation of said cycloaliphatic unsaturated ketones.