Gold-Catalyzed Dehydrogenative Cycloaddition of Tethered 1,<i>n</i>-Dihydrodisilanes to Alkynes
作者:Vasiliki Kotzabasaki、Ioannis N. Lykakis、Charis Gryparis、Androniki Psyllaki、Eleni Vasilikogiannaki、Manolis Stratakis
DOI:10.1021/om3011678
日期:2013.1.28
5-hexamethyltrisiloxane (4), and 1,2-bis(dimethylsilyl)benzene (5), to alkynes, forming cycloadducts and releasing H2. Under the same conditions, polymeric methylhydrosiloxane is completely unreactive. For the majority of terminal alkynes and 1,n-dihydrodisilanes the yields are excellent (up to 99%). In general, terminal alkynes are more reactive as compared to internal. The reaction tolerates several