Patent ID: 8648203

Claim:
A process for preparing a pyridinamine compound represented by the structure of formula (I) wherein X is a trifluoromethyl group, a halogen atom, a C 1 -C 6 alkyl group or a C 1 -C 6 alkoxy group; N is an integer of 0 to 4; R is a hydrogen atom or an acetyl group; Y is a hydrogen atom, a halogen atom, a C 1 -C 6 alkoxy group, a C 1 -C 6 thioalkyl group, a hydroxy group, an azido group, a phenoxy group or a phenoxy group in which the phenyl is substituted with a hydroxy; and Z 1 , Z 2 and Z 3 are independently a trifluoromethyl group or a nitro group, the process comprising reacting a compound of formula (A) with a compound of formula (B) wherein X, Y, Z 1 , Z 2 , Z 3 and n in the formulas (A) and (B) are defined above; one of U and W is amino and the other is a leaving group selected from the group consisting of halogen, alkyl sulfonyl and arylsulfonyl in the presence of a base, in a reaction solvent of methyl isobutyl ketone (MIBK).