Method for separation of isomers of azo compounds

Details Method for separation of isomers of azo compounds Method for separation of isomers of azo compounds

C - Chemistry, Metallurgy

07

C

C07C 245/04 (2006.01) C07C 253/34 (2006.01) C08F 2/18 (2006.01) C08F 120/44 (2006.01) C07C 255/65 (2006.01)

Patent

CA 2336767

A method for separation of a racemic isomer and a meso isomer from a mixture of a racemic isomer and a meso isomer of a compound shown by the general formula [1] (see formula 1) (wherein R1 and R2 are each independently a lower alkyl group or a cyano group, which are different from each other, R3 and R4 are each independently a lower alkyl group, and R5 is a hydrogen atom or a lower alkoxy group), which comprises treating the mixture with a water soluble organic solvent.

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