发明名称 Method of producing aminophenol compounds
摘要 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 R1 and R2, which may be the same or different, is a hydrogen atom, a substituted or unsubstituted lower alkyl group or the like; R1 and R2, 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 R1 and R2 are as defined above), under a neutral or basic condition.
申请公布号 US7750156(B2) 申请公布日期 2010.07.06
申请号 US20050593968 申请日期 2005.03.25
申请人 OTSUKA PHARMACEUTICAL CO., LTD. 发明人 KIYOKAWA HIROSHI;AKI SHINJI
分类号 C07D241/04;C07C213/02;C07C215/76;C07C215/82;C07D211/40;C07D211/46;C07D295/096;C07D401/00 主分类号 C07D241/04
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