Aromatic aldehydes, their derivatives and their utilization...

C - Chemistry – Metallurgy – 07 – C

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C07C 43/303 (2006.01) A01N 33/08 (2006.01) A01N 43/40 (2006.01) A01N 43/84 (2006.01) C07C 45/62 (2006.01) C07C 45/67 (2006.01) C07C 45/74 (2006.01) C07C 47/20 (2006.01) C07C 47/232 (2006.01) C07C 47/277 (2006.01) C07D 211/14 (2006.01) C07D 295/03 (2006.01) C07D 295/096 (2006.01) C11B 9/00 (2006.01)

Patent

CA 2013781

Disclosed are aromatic aldehydes of formula: (see fig. I) (in which the dotted line represents a single or a double bond, X represents a monovalent radical or formula: (see fig. II) or, when the dotted line represents a single bond, of formula: (see fig. III) and Z stands for an oxygen atom or for two R2O radicals, each of R1 and R2 representing an alkyl radical having from 1 to 3 carbon atoms). The aromatic aldehydes (I) possess useful odorous properties and can be used as perfuming ingredients for the preparation of perfume bases and perfumed articles. They can also be used as starting materials for the preparation of useful end-products having herbicide and fungicide properties. Further disclosed is a process for the preparation of the aromatic aldehydes (I) starting from 8-methoxycuminic aldehyde.

L'invention porte sur des aldéhydes aromatiques de formule (voir fig. I) (dans laquelle la ligne en pointillé représente une liaison simple ou double, X étant un radical monovalent), ou de formule (voir fig. II) ou, lorsque la ligne en pointillé représente une liaison simple, de formule (voir fig. III), Z représentant un atome d'oxygène ou deux radicaux R2O, R1 et R2 étant chacun un alkyle de 1 à 3 atomes de carbone. Ces aldéhydes aromatiques (I) ont des propriétés odoriférantes utiles et peuvent servir comme parfums pour la préparation de bases de parfums et d'articles parfumés. Ils peuvent également servir comme produits de départ pour la préparation de produits herbicides et fongicides. Enfin, l'invention présente une méthode pour préparer les aldéhydes aromatiques (I) à partir du 8-méthoxycuminaldéhyde.

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