Patent ID: 7750156

Claim:
A method of producing an aminophenol compound represented by the formula (1) wherein R 1 and R 2 , taken together with the adjacent nitrogen atom, form a 5- or 6-membered heterocyclic group selected from the group consisting of a piperidinyl and a piperazinyl group and the heterocyclic group may be substituted by 1 to 3 substituents selected from the group consisting of a hydroxyl group; a lower alkyl group which may have 1 to 3 substituents selected from the group consisting of a halogen atom, a hydroxyl group, and an aryl group; an aryl group which may have 1 to 3 substituents selected from the group consisting of a lower alkyl group which may have 1 to 3 substituents selected from the group consisting of a halogen atom and a hydroxyl group, a lower alkoxy group which may have 1 to 3 substituents selected from the group consisting of a halogen atom and a hydroxyl group, and halogen atoms; and an aryloxy group which may have 1 to 3 substituents selected from the group consisting of a lower alkyl group which may have 1 to 3 substituents selected from the group consisting of a halogen atom and a hydroxyl group, a lower alkoxy group which may have 1 to 3 substituents selected from the group consisting of a halogen atom and a hydroxyl group, and halogen atoms, which comprises allowing a cyclohexanedione compound represented by the formula (2) to react with an amine compound represented by the formula (3) (wherein R 1 and R 2 are as defined above), under a neutral or basic condition.