申请人:KURARAY CO., LTD.
公开号:EP0041656A2
公开(公告)日:1981-12-16
Novel cyclohexanone derivatives of general formula:
(wherein R1 is a hydrocarbon group of 1 to 15 carbon atoms) and new cyclohexanone derivatives of general formula:
(wherein R' and R2 each is a hydrocarbon group of 1 to 15 carbon atoms) are produced by an electrooxidative coupling of 1,3-cyclohexanedione with a vinyl ether of generat formula:
(wherein R1 is as defined above) in the presence or absense of an alcohol of general formula:
(wherein R2 is as defined above). These new cyclohexanone derivatives can be easily converted to N-substituted or unsubstituted-4-oxo-4,5,6,7-tetrahydroindoles, which are of value as intermediates for the production of N-substituted or unsubstituted-4-hydroxyindoles and, thence, to pindolol and its analogs.
通式如下的新型环己酮衍生物
(其中 R1 为 1 至 15 个碳原子的烃基)和通式如下的新型环己酮衍生物:
(其中 R' 和 R2 各为 1 至 15 个碳原子的烃基)通过 1,3-环己二酮与通式如下的乙烯基醚的电氧化偶联生成:
(其中 R1 如上定义)在通式为醇存在或不存在的情况下通过电氧化偶联生成:
(其中 R2 如上定义)。这些新的环己酮衍生物可以很容易地转化为 N-取代或未取代的-4-氧代-4,5,6,7-四氢吲哚,它们是生产 N-取代或未取代的-4-羟基吲哚,进而生产吲哚及其类似物的中间体。