Supported Au Nanoparticles‐Catalyzed Regioselective Dehydrogenative Disilylation of Allenes by Dihydrosilane
作者:Marios Kidonakis、Vasiliki Kotzabasaki、Eleni Vasilikogiannaki、Manolis Stratakis
DOI:10.1002/chem.201901408
日期:2019.7.11
Supported Au nanoparticles on TiO2 catalyze the unprecedented dehydrogenative disilylation of monosubstituted and 1,1‐disubstituted allenes by Et2SiH2 exclusively on the terminal double bond in a stereoselective manner. Treatment of the disilylation products with H2O, in a one‐pot operation also catalyzed by Au/TiO2, leads to 3‐alkylidene‐1,2,5‐oxadisilolanes, an unknown class of heterocyclic compounds
在TiO支持的Au纳米颗粒2催化单取代和1,1-二取代的丙二烯的前所未有脱氢disilylation通过的Et 2的SiH 2只在以立体选择性方式的末端双键。在同样由Au / TiO 2催化的一锅操作中,用H 2 O处理二烯丙基化产物会生成3-亚烷基-1,2,5-恶二硅环酮,这是一类未知的杂环化合物,是出色的支架Hiyama型交叉偶联条件下烯烃的立体选择性合成。