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    • 4. 发明专利
    • Preparation of 3,4-dihydroisoquinolines from acid and amine
    • 从酸和胺制备3,4-二氢喹啉
    • JP2013100363A
    • 2013-05-23
    • JP2013035340
    • 2013-02-26
    • Mallinckrodt Llcマリンクロッド エルエルシー
    • GROTE CHRISTOPHER WWANG PETER XMOSER FRANK WCANTRELL GARY L
    • C07D217/20C07C231/02C07C235/34C07C309/66
    • C07C235/34C07C231/02C07C309/77Y02P20/55
    • PROBLEM TO BE SOLVED: To provide a synthetic method that requires reduced amounts of phosphorus oxychloride, lowered reaction times, reduced temperatures, simplified work-up and isolation, and does not require additional harsh synthetic steps to remove a phenol protecting group.SOLUTION: The present invention is directed to an improved synthetic method for preparing 3,4-dihydroisoquinolines from a phenyl acetic acid derivative and an amine substituted benzene derivative. The present invention is further directed to the preparation of various 3,4-dihydroisoquinolines (Formulae 600 to 602) from the reaction of particular phenyl acetic acid derivatives (Formulae 300 and 301) with phenethylamine derivatives (Formula 400). The reaction product of a phenyl acetic acid derivative and a phenethylamine derivative is an amide compound (Formulae 500 to 502). In the synthetic method, the amide formed can be isolated or the crude product can be further reacted to form a 3,4-dihydroisoquinoline.
    • 要解决的问题:提供需要减少量的三氯氧化磷,降低的反应时间,降低温度,简化后处理和分离的合成方法,并且不需要额外的苛刻的合成步骤来除去苯酚保护基团。 解决方案:本发明涉及一种由苯乙酸衍生物和胺取代的苯衍生物制备3,4-二氢异喹啉的改进的合成方法。 本发明还涉及由特定苯基乙酸衍生物(式300和301)与苯乙胺衍生物(式400)的反应制备各种3,4-二氢异喹啉(式600至602)。 苯乙酸衍生物和苯乙胺衍生物的反应产物是酰胺化合物(式500至502)。 在合成方法中,可以分离形成的酰胺,或者使粗产物进一步反应形成3,4-二氢异喹啉。 版权所有(C)2013,JPO&INPIT