Catalyst and process for the preparation of aldehydes by...

Details Catalyst and process for the preparation of aldehydes by... Catalyst and process for the preparation of aldehydes by...

B - Operations, Transporting

01

J

B01J 31/24 (2006.01) C07C 45/50 (2006.01) C07C 47/02 (2006.01) C07C 47/228 (2006.01) C07C 51/373 (2006.01) C07C 59/225 (2006.01) C07F 15/00 (2006.01)

Patent

CA 2261861

A catalyst for hydroformylation reactions contains rhodium and a compound of general formula (I), in which m equals 1 to 1000; x equals 0 to 4; W is a group of formulas -CH2-CH2-, -CH(CH3)CH2- or -CH2CH(CH3)-; R stands for hydrogen, a straight or branched chain C1-C5 alkyl radical, or a group of formulas (a) or (b), in which a, b, c, d and e, independently of each other, equal 0 to 1000, at least one of the numbers a, b, c, d and e being higher than 0, R5, R6, R7, R8 and R9 are the same or different and stand for hydrogen, C1-C5 alkyl or a group of formula (c), in which R1 and R2 are the same or different and stand for a straight chain, branched or cyclic C1-C30 alkyl radical or C6-C10 aryl radical substituted or not by one to five C1-C3 alkyl radicals; and L stands for C1-C5 alkyl, C1-C5 alkoxy, NO2, NR3R4, in which R3 and R4 represent independently of each other hydrogen or C1-C4 alkyl, or for Cl or OH.

L'invention concerne un catalyseur pour réactions d'hydroformylation qui contient du rhodium et un composé de formule générale (I), dans laquelle m vaut 1 à 1000; x vaut 0 à 4; W représente un groupe des formules -CH¿2?-CH¿2?-, -CH(CH¿3?)CH¿2?- ou -CH¿2?CH(CH¿3?)-; R désigne hydrogène ou un radical alkyle C¿1?-C¿5? à chaîne droite ou ramifiée, ou un groupe des formules (a) ou (b), dans lesquelles a, b, c, d et e valent, indépendamment les uns des autres, 0 à 1000, au moins un des chiffres a, b, c, d et e étant supérieur à 0, R?5¿, R?6¿, R?7¿, R?8¿ et R?9¿ sont identiques ou différents et désignent hydrogène, alkyle C¿1?-C¿5? ou un groupe de formule (c), dans laquelle R?1¿ et R?2¿ sont identiques ou différents et désignent un radical alkyle C¿1?-C¿30? ou aryle C¿6?-C¿10? à chaîne droite, ramifiée ou cyclique, substitué ou non par un à cinq radicaux alkyle C¿1?-C¿3?; et L désigne alkyle C¿1?-C¿5?, alcoxy C¿1?-C¿5?, NO¿2?, NR?3¿R?4¿, où R?3¿ et R?4¿ représentent indépendamment l'un de l'autre hydrogène ou alkyle C¿1?-C¿4?, ou bien désigne Cl ou OH.

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