To provide a method that prepares high selectively an aromatic- substituted aniline derivative in the mild reaction condition.

An oxime derivative shown by formula (3) is prepared by reacting a cyclohexanone derivative shown by formula (1) and a hydroxylamine derivative shown by formula (2), and then an aniline derivative shown by formula (4) is prepared by elimination reaction. (In the formulae, X shows a substitutable aromatic ring, Y shows CO2R6, CN, NO2, SO3R6, SO2NR4R5, SOR6, SO2R6, and R1, R2 and R3 show H, a substitutable alkyl group, alkenyl group alkynyl group, and alkoxy group, R4, R5 and R6 show H, a substitutable alkyl group and phenyl group, the ring of 4-7 members may be formed by R4 and R5.).