摘要:
2,6-exo configured tricyclo AD5.2.1.02,6 BDdecane derivatives with functional side chain in C-8/C-9, having the general formula (A) wherein Ra, Rb, Rc and Rd are hydrogen residues, or Rd is a methyl group and Ra, Rb and Rc are hydrogen or methyl residues, one of the substituents being a methyl residue and the other two hydrogen residues; the underlined lines between C-4 and C-5, respectively C-11 and C-12 represent a double bond C-C or a single bond C-C; R1 and R2 are hydrogen or straight or branched chain lower alkyl residues containing from 1 to 6 atoms of carbon; X is a carbonyl or hydroxyl function. The compounds of the general formula (A) may be preferably used as perfumes or ingredients of perfume mixtures and as perfumed oils for cosmetic and technical products.
摘要:
Described are a series of compounds defined according to structure: wherein the dashed line represents a carbon-carbon single bond or a carbon-carbon double bond; wherein Z is in the alternative one of the moieties:
wherein R 1 , R 2 , R 3 , R 4 , R 5 . R 6 and R 7 are each inthe alternative hydrogen or methyl; wherein R 8 and R 9 are in the alternative the same or different and are hydrogen orC 1 -C 4 alkyl; with the proviso that one of R 1 , R 2 , R 5 , R 6 or R 7 is methyl and the other of R 1 , R 2 , R 5 , R 6 and R 7 is hydrogen; and with the additional proviso that R 3 and R 4 are not both methyl and uses thereof for augmenting or enhancing the organoleptic properties of consumable materials including foodstuffs, chewing gums, toothpastes, medicinal products, smoking tobaccos, chewing tobaccos, perfumes, perfumed articles, colognes, smoking tobaccos or smoking tobacco articles, as well as catalytic and thermal processes for preparing such compounds by means of Diels-alder reactions between arcylic compounds and monomethyl substituted cyclopentadienes or mixtures thereof.
摘要:
The present invention relates to a process for the production of formyl cyclohexene derivatives which are suitable as odorants as such or as intermediates for the preparation of further odorants. In particular the present invention relates to a domino-methylenation-Diels-Alder reaction of α,β-unsaturated aldehydes using formaldehyde in the presence of 1,3-butadienes. Compounds of Formula (IVa) and their use as flavor or fragrance as well as compounds of Formula (IVb) are also claimed.
摘要:
The present invention is directed to a novel fragrance compound of octahydro-4,7-methano-1H-indene-5-acetaldehyde, octahydro-6-methyl-4,7-methano-1H-indene-5-carboxaldehyde, or a mixture thereof.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur selektiven Hydroformylierung von Dicyclopentadien zu 8(9)-Formyl-tricyclo[5.2.1.0 2.6 ]dec-3-en in einem heterogenen Reaktionssystem unter Verwendung einer wässrigen Lösung, die wasserlösliche organische Phosphor(III)-Verbindungen in komplexer Bindung enthaltende Übergangsmetallverbindungen der Gruppe VIII des Periodensystems der Elemente enthält, wobei es sich bei den wasserlöslichen organischen Phosphor(III)-Verbindungen um Alkali- oder Erdalkalisalze sulfonierter Arylphosphine und Aryldiphosphine handelt.