摘要:
The .beta.,.gamma.-unsaturated 2,2,3-trimethylcyclopent-3-enyl derivatives of formula I ##STR1## where R may be methyl, ethyl, propyl, isopropyl or butyl, the wavy line characterizes geometric isomers and the broken lines characterize stereoisomers. These compounds can be produced by reduction of the aldol condensation products of campholene aldehyde and aliphatic aldehydes using sodium borohydride at raised temperatures. The compounds can be used to individually or as a mixture with the relevant .alpha.,.beta.-unsaturated alcohols as odorants or as an ingredient of perfume oils for cosmetic and technical consumer goods.
摘要:
It was found that 8-exo-formyl-2,6-exo-tricyclo[5.2.1.0.sup.2,6 ]decane having the constitution and stereochemistry of formula (I) possesses particularly useful olfactory properties which are clearly superior to those of the 8-endo-epimer and which already have an effect if compound (I) is enriched with mixtures of 8-exo- and 8-endo-epimers. Compound (I) can therefore be advantageously used, in pure or enriched form, as a scent or as a component of perfume compositions. To prepare an enriched epimer mixture, a mixture obtained in a known manner (U.S. Pat. No. 3,270,061) and having an exo/endo ratio of 1.45:1 is brought into equilibrium by base catalysis, preferably by the action of alkali hydroxides in alcoholic solution, to give an exo/endo ratio of 5.25:1. Alternatively, the enriched epimer mixture can be prepared starting from 8-formyl-2,6-exo-tricyclo[5.2.1.0.sup.2,6 ]decene-3(4), catalytically hydrogenated for example with palladium coal and then optionally brought into equilibrium. Or 2,6-exo-tricyclo[5.2.1.0.sup.2,6 ]decene-8 can be hydroformylated and also optionally brought into equilibrium. The pure compound (I) is prepared by reducing preferably a mixture of 8-exo- and 8-endo-epimers obtained in the manner known per se to a mixture of the corresponding alcohols, from which the 8-exo-configured methylol is isolated by chromatography or distillation and oxidized to obtain the aldehyde (compound I) again.
摘要:
It has been found that .alpha.-campholenenitrile with formula A and .gamma.-campholenenitrile with formula B ##STR1## are excellent for use as fragrances, especially as components of fragrance mixtures for perfuming cosmetics or other consumer goods. The two nitriles can be used individually or in mixture with each other.
摘要:
It was found that ekylic ethers of 2,2,2-trichloro-1-phenylethanol with the general formula A ##STR1## are excellently usable as odoriferous substances, especially as components of perfume oils for cosmetic and technical consumer goods.
摘要翻译:发现具有通式A AR = C 1 -C 5烷基的2,2,2-三氯-1-苯基乙醇的烷基醚优异地用作气味物质,特别是作为化妆品和技术消费品的香料油的组分 。
摘要:
There is described a compound of general formula (2RS,4SR,6X)-2,4,6-Rimethyl-4-phenyl-1,3-dioxane with the configuration characteristic X=RS (Compound 1) or SR ##STR1## The compounds 1 and 3 possess a fragrance which can be described as strong, herbal-fresh, green, typically grapefruit.Further described are new processes for production of a mixture of the compounds (2RS,4SR,6RS)-2,4,6-trimethyl-4-phenyl-1,3-dioxane (1) and (2RS,4RS,6RS)-2,4,6-trimethyl-4-phenyl-1,3-dioxane (2).