Patent ID: 8263779

Claim:
A method for purifying an α-unsaturated amine compound represented by Formula (1), comprising a step of extracting with water the compound of Formula (1) from a crude product of the α-unsaturated amine compound represented by Formula (1), and a step of extracting with 5 ethyl-2-methylpyridine the α-unsaturated amine compound of Formula (1) from the aqueous solution containing the compound of Formula (1) obtained in the previous step to obtain a 5-ethyl-2-methylpyridine solution of the compound of Formula (1): wherein R 1 represents a hydrogen atom, a C 1-4 alkyl group, a halo C 1-4 alkyl group, a C 1-4 alkoxy-C 1-4 alkyl group, a C 7-9 aralkyl group, or an optionally substituted phenyl group, R 2 represents a hydrogen atom, a C 1-4 alkyl group, or a C 7-9 aralkyl group, and R 3 represents a hydrogen atom, a C 1-5 alkyl group, a halo C 1-4 alkyl group, a hydroxy C 1-4 alkyl group, a C 1-4 alkoxy-C 1-4 alkyl group, C 2-4 alkenyl group, or a C 7-9 aralkyl group.