NaY Zeolite as Host for the Selective Heterogeneous Oxidation of Silanes and Olefins with Hydrogen Peroxide Catalyzed by Methyltrioxorhenium
作者:Waldemar Adam、Chantu R. Saha-Möller、Oliver Weichold
DOI:10.1021/jo991908e
日期:2000.5.1
The methyltrioxorhenium(MTO)-catalyzed oxidation of silanes to silanols and the epoxidation of various olefins by aqueous 85% H(2)O(2) proceed in high yields and excellent product selectivities (no disiloxanes, diols) in the presence of the zeolite NaY. The oxidative species is located inside the 12-A supercages. This prevents the bimolecular condensation of the silanol to disiloxane by steric means
甲基三氧合tri(MTO)催化的硅烷氧化成硅烷醇以及各种烯烃被85%的H(2)O(2)水溶液环氧化以高收率和出色的产品选择性(无二硅氧烷,二醇)在沸石的存在下进行没错 氧化物质位于12-A超级笼中。这防止了通过空间方式硅烷醇与二硅氧烷的双分子缩合和路易斯酸辅助的环氧化物水解为二醇的水解。