作者:Roland Fischer、Tina Konopa、Stephan Ully、Judith Baumgartner、Christoph Marschner
DOI:10.1016/j.jorganchem.2003.02.002
日期:2003.11
functionalization of the cage molecules is demonstrated by the synthesis and derivatization of 1,4-dipotassio-[2.2.2]-bicyclooctasilane. The extraordinary selectivity for the cleavage of trimethylsilyl groups is demonstrated for the case of bis(trimethylsilyl)bis(undecamethylcyclohexasilanyl)silane, where in a molecule which contains 16 silicon–silicon bonds, a trimethylsilyl group is selectively attacked
从1,4-二硅烷四硅烷开始,可以容易地获得1,1,4,4-四(三甲基甲硅烷基)八甲基环六硅烷。这可用于产生反式-1,4-二potassiocyclohexasilane。与镁的金属转移会导致阴离子硅原子之一的构型正式反转。取决于原料的立体化学构型,水解产生反式或顺式1,4-二氢环六硅烷。1,4-二potassiocyclohexasilane也为合成[2.2.0],[2.2.1]和[2.2.2]双环低硅烷系统提供了方便的前体。笼形分子进一步功能化的主要可能性是通过1,4-双亚丙基-[2.2.2]-双环辛硅烷的合成和衍生化来证明的。对于双(三甲基甲硅烷基)双(十一碳甲基环六甲硅烷基)硅烷来说,三甲基甲硅烷基的裂解具有非凡的选择性,在含有16个硅-硅键的分子中,三甲基甲硅烷基被选择性地攻击。