会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明公开
    • Process for preparing polyalkyl tetrahydronaphthalenes
    • 制备聚烷基四氢萘的方法
    • EP0390308A1
    • 1990-10-03
    • EP90300678.1
    • 1990-01-23
    • Union Camp Corporation
    • Frank, Walter C.
    • C07C13/48C07C2/72
    • C07C2/72C07C2527/126C07C2602/00C07C2602/10C07C13/48
    • A process is disclosed for the production of polyalkyl tetrahydronaphthalenes wherein a cyclialkylation reaction between an olefinic compound of the general formula
      where R⁴, R⁵, R⁶ and R⁷ are independently defined and each is a substituent which does not interfere substantially with a Friedel-Crafts reaction, and a substituted benzene compound, is carried out in the presence of an alkyl halide or, in some embodiments, hydrogen halide, a Lewis acid, and, optionally, a phase transfer agent and a hydride abstrating reagent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process, which may be practiced in an unhalogenated hydrocarbon solvent, produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at relatively high rate of reaction, using better, more convenient or less expensive process methodology than many processes known heretofore.
    • 公开了一种制备聚烷基四氢萘的方法,其中通式如下的烯烃化合物之间的环烷基化反应其中R 4,R 5,R 6和R 6各自独立地定义,并且各自是基本上不干扰Friedel-Crafts反应的取代基, 和取代的苯化合物的反应在烷基卤化物或在一些实施方案中,卤化氢,路易斯酸和任选的相转移剂和氢化物放弃剂的存在下进行。 在一些实施方案中,本发明方法特别在不存在元素碘的情况下进行。 可以在未卤代烃溶剂中实施的本发明方法以惊人的高收率产生期望的化合物,对所需产物具有令人惊讶的高选择性,并且以相对高的反应速率使用更好,更方便或更便宜 处理方法比许多迄今为止已知的处理方法。