申请人:ETHYL CORPORATION
公开号:EP0336371A2
公开(公告)日:1989-10-11
Gem-disubstituted cyclohexadienone in which the gem substituents are a perfluoroalkyl group and a trihydrocarbylsiloxy group are prepared by perfluoroalkylating a quinone with a perfluoroalkyltrihydrocarbylsilane in the presence of an active catalyst under essentially anhydrous conditions, preferably in a suitable liquid phase reaction medium, most preferably in a dipolar aprotic solvent. These gem-disubstituted compounds are readily convertible to perfluoroalkyl-substituted aromatics and thus provide a means of circumventing the traditional need for photo-chlorination followed by halogen exchange in the preparation of such products.
宝石二取代环己二烯酮(其中宝石取代基为全氟烷基和三氢羰基硅氧烷基)的制备方法是:在活性催化剂存在下,在基本上无水的条件下,最好是在合适的液相反应介质中,最理想的是在二极性无水溶剂中,用全氟烷基三氢羰基硅烷对醌进行全氟烷基化反应。这些 gem-二取代化合物很容易转化为全氟烷基取代的芳烃,因此提供了一种方法来避免在制备这类产品时需要先进行光氯化再进行卤素交换的传统做法。