EFFICIENT SCALABLE SYNTHESES OF ABSCISIC ACID, 8'-ACETYLENE ABSCISIC ACID AND 8'-CYCLOPROPYL ABSCISIC ACID
    1.
    发明申请
    EFFICIENT SCALABLE SYNTHESES OF ABSCISIC ACID, 8'-ACETYLENE ABSCISIC ACID AND 8'-CYCLOPROPYL ABSCISIC ACID 有权
    抗坏血酸,8'-乙酰丙酸和8'-环丙基胆酸的高效可合成的合成

    公开(公告)号:US20170057899A1

    公开(公告)日:2017-03-02

    申请号:US15241564

    申请日:2016-08-19

    IPC分类号: C07C51/09 C07C67/40 C07C46/06

    摘要: Methods are provided for synthesis of abscisic acid and 8′ analogues thereof (including an enantiopure 8′-acetylene analogue) including methods wherein the previously reported first step of oxidation of 2,6-dimethylphenol (VI) to 2,6-dimethylbenzoquinone, mono ketal (VII) is replaced by a novel two step process comprising (i) oxidation of 2,6-dimethylphenol (VI) using potassium peroxymonosulfate with a catalytic amount of iodobenzene to produce 2,6-dimethylbenzoquinone (XVI) and (ii) ketalization of 2,6-dimethylbenzoquinone (XVI) using ethylene glycol, trimethylorthoformate with a catalytic amount of p-toluenesulfonic acid to produce 2,6-dimethylbenzoquinone, mono ketal (VII).

    摘要翻译: 提供了用于合成脱落酸及其8'类似物(包括对映体纯的8'-乙炔类似物)的方法,包括先前报导的2,6-二甲基苯酚(Ⅵ)氧化为2,6-二甲基苯醌,单 缩酮(VII)被新的二步法替代,其包括(i)使用过氧化硫酸钾与催化量的碘苯氧化2,6-二甲基苯酚(Ⅵ)以产生2,6-二甲基苯醌(ⅩⅥ)和(ⅱ)缩酮化 的2,6-二甲基苯醌(XVI),使用乙二醇,原甲酸三甲酯与催化量的对甲苯磺酸反应,生成2,6-二甲基苯醌,单缩酮(VII)。