The purification of 2-methoxy-5-trifluoromethoxybenzaldehyde

Details The purification of 2-methoxy-5-trifluoromethoxybenzaldehyde The purification of 2-methoxy-5-trifluoromethoxybenzaldehyde

C - Chemistry, Metallurgy

07

C

C07C 45/85 (2006.01) C07C 45/81 (2006.01) C07C 47/575 (2006.01) C07C 251/16 (2006.01) C07C 249/02 (2006.01) C07C 251/24 (2006.01)

Patent

CA 2476608

A process for the purification of 2-methoxy-5-trifluor-methoxy benzaldehyde oil in which the oil is converted to amine by reaction of a nitroaniline with the oil; the imine is isolated as a solid; and the solid imine is converted back to the 2-methodxy-5-trifluormethoxy benzaldehyde oil. The nitroaniline is selected from the group consisting of 3-nitroaniline, 3-methyl-2-nitroaniline, 4-methyl-2-nitroaniline, 2 methyl-3-nitroaniline and 4-methdyl-3-nitroaniline.

La présente invention a trait à un procédé de purification de l'huile de 2-méthoxy-5-trifluorométhoxybenzaldéhyde dans lequel l'huile est convertie en amine par la réaction d'une nitroaniline avec l'huile ; l'imine est isolée en tant que solide ; et l'imine solide est reconvertie en huile de 2-méthoxy-5-trifluorométhoxybenzaldéhyde. La nitroaniline est choisie parmi le groupe composé de 3-nitroaniline, 3-méthyl-2-nitroaniline, 4-méthyl-2-nitroaniline, 2 méthyl-3-nitroaniline et 4-méthyl-3-nitroaniline.

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