Scope and selectivity of B(C6F5)3-catalyzed reactions of the disilane (Ph2SiH)2
作者:Peter T.K. Lee、Lisa Rosenberg
DOI:10.1016/j.jorganchem.2016.02.035
日期:2016.5
harnessing the collective, broad scope of these transformations in the preparation of new oligosilane derivatives. Borane-catalyzed hydrosilation, heterodehydrogenative coupling, and dealkylative coupling reactions of a wide range of substrates with the disilane (Ph2SiH)2 were investigated. These allowed new mono- and disubstituted disilanes to be prepared that contain SiO, SiS, and SiC linkages. Challenges
硅烷与有机底物反应中的亲电硼烷B(C 6 F 5)3的各种催化活性已在研究中得到了广泛利用,这些研究主要集中于有机合成中非常特殊,有用的官能团转化。这项研究检验了在制备新的低聚硅烷衍生物中利用这些转变的集体广泛范围的潜力。研究了硼烷催化的氢化硅烷化,杂脱氢偶联和各种基材与乙硅烷(Ph 2 SiH)2的脱烷基偶联反应。这些使得可以制备含有Si O,Si S和Si的新的单取代和二取代的乙硅烷。C链接。描述了竞争性“过度还原”化学反应所带来的挑战和机遇,并研究了催化对底物的路易斯碱度和空间位阻的敏感性。
Metal-Free Ammonium Iodide Catalyzed Oxidative Dehydrocoupling of Silanes with Alcohols
作者:Pailla Kumar、Sheng-rong Guo、Yan-qin Yuan
DOI:10.1055/s-0036-1588816
日期:2017.8
An ammonium iodide catalyzed direct oxidative coupling of silanes with alcohols to give various alkoxysilane derivatives was discovered. tert-Butyl hydroperoxide proved to be an efficient oxidant for this transformation. Attractive features of this protocol include its transition-metal-free nature and the mild reaction conditions.