Process for dienoic condensation known as the diels-alder reaction
    8.
    发明授权
    Process for dienoic condensation known as the diels-alder reaction 失效
    二烯缩合方法称为狄尔斯 - 阿尔德反应

    公开(公告)号:US5892124A

    公开(公告)日:1999-04-06

    申请号:US999390

    申请日:1997-12-29

    CPC分类号: C07C45/69 C07B37/12

    摘要: Improved process for implementing the Diels-Alder reaction that consists in using reagents in the presence of at least one liquid salt of general formula Q.sup.+ A.sup.-, in which Q.sup.+ represents a quaternary ammonium and/or phosphonium and A.sup.- represents an anion and optionally at least one Lewis acid. The anion is preferably selected from the group that is formed by tetrafluoroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, perfluoroalkylsulfonate, fluorosulfonate or else dichlorocuprate, tetrachloroborate, tetrachloroaluminate, and trichlorozincate. At the end of the reaction, the organic phase is separated, and the polar phase is reused.

    摘要翻译: 改进的实施Diels-Alder反应的方法,其包括在存在至少一种通式Q + A-的液体盐的情况下使用试剂,其中Q +代表季铵和/或鏻,A-代表阴离子和任选的 至少一种路易斯酸。 阴离子优选选自由四氟硼酸盐,六氟磷酸盐,六氟锑酸盐,六氟砷酸盐,全氟烷基磺酸盐,氟代磺酸盐或二氯磷酸盐,四氯硼酸盐,四氯铝酸盐和三氯酸锌形成的基团。 在反应结束时,将有机相分离,极性相重复使用。