Method for producing toluol derivatives

Details Method for producing toluol derivatives Method for producing toluol derivatives

C - Chemistry, Metallurgy

07

C

C07C 1/22 (2006.01) B01J 23/00 (2006.01) B01J 23/72 (2006.01) B01J 23/755 (2006.01) B01J 23/885 (2006.01) B01J 23/889 (2006.01) C07C 41/18 (2006.01) C07C 43/205 (2006.01)

Patent

CA 2473936

The invention relates to a method for producing toluol derivatives of formula (I), in which R1, R2, and R3 independently of one another represent hydrogen, halogen, C1-C6 alkyl, hydroxyl or C1-C6 alkoxy. Said derivatives are produced by the hydrogenation of benzaldehydes and/or benzylalcohols of formula (II), IIa: X=CHO X=CH[OC1-C6 alkyl]2, IIb: X=CH2-OH X=CH2OC1-C6 alkyl with hydrogen in the presence of a catalyst, which is defined in more detail in the description.

L'invention concerne la production de dérivés de toluène de la formule (I) où R?1¿, R?2¿ et R?3¿ représentent indépendamment un hydrogène, halogène, alkyle C¿1?-C¿6?, hydroxyle ou alcoxy C¿1?-C¿6?, par hydrogénation de benzaldéhydes et/ou d'alcools benzyliques de la formule (II) où IIa: X=CHO X=CH[OC¿1?-C¿6?-alkyle]¿2?, IIb: X=CH¿2?-OH X=CH¿2?OC¿1?-C¿6?-alkyle, avec de l'hydrogène en présence d'un catalyseur qui est défini plus précisément dans la description.

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