The present invention provides an industrially advantageous method of producing aminophenol compounds represented by the formula (1) by a simple and easy procedure at a high yield and a high purity. The present invention provides a method of producing an aminophenol compound represented by the formula (1): (wherein each of R
1
and R
2
, which may be the same or different, is a hydrogen atom, a substituted or unsubstituted lower alkyl group or the like; R
1
and R
2
, taken together with the adjacent nitrogen atom, may form a 5- or 6-membered heterocycle with or without other intervening heteroatoms; the heterocycle may be substituted by 1 to 3 substituents selected from the group consisting of a hydroxyl group, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group and the like; and the hydroxyl group in the formula (1) is substituted on the 2- or 4-position to the amino group on the phenyl ring), 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.
本发明提供了一种工业上有利的方法,通过简单易行的步骤以高产率和高纯度生产由公式(1)表示的
氨基
酚化合物。本发明提供了一种制备由公式(1)表示的
氨基
酚化合物的方法:(其中R1和R2中的每一个,可以相同也可以不同,是氢原子,取代或未取代的低级烷基或类似物;R1和R2与相邻的氮原子一起,可以形成带有或不带其他杂原子的5-或6-成员杂环;该杂环可以被1至3个取代基所取代,所述取代基选自羟基,取代或未取代的低级烷基,取代或未取代的芳基,取代或未取代的芳氧基等;公式(1)中的羟基被取代在苯环上的
氨基的2-或4-位置),其中包括在中性或碱性条件下使由公式(2)表示的
环己酮二酮化合物与由公式(3)表示的胺化合物(其中R1和R2如上所定义)反应。