Syntheses of cyclic diselenides through diselenolates and the following deselenation reactions by means of three ways were studied. The preparation of the cyclic diselenides in the presence of excess sodium borohydride gave thirty-eight diselenides containing diselena[3.3]cyclophanes and alicyclic diseleno compounds in high yields in addition to two triple-bridged selenacyclophanes. Photodeselenation
研究了二
硒化物合成环状二
硒化物以及通过三种途径进行的脱
硒反应。在过量
硼氢化钠存在下制备环状二
硒化物,得到了 38 种二
硒化物,其中含有二
硒 [3.3] 环
芳烃和脂环式二
硒化物,以及两个三桥联
硒环
芳烃。三(
二甲氨基)膦中二
硒化物的光脱
硒以比其他两种方法(即苯-史蒂文斯重排/雷尼
镍氢解和热解脱
硒)高得多的产率提供了一系列 [2.2] 环烷。650℃。本研究表明,光脱
硒方法与其前体二
硒化物的合成相结合,远优于传统的脱
硫方法。