Preparation of Silica Supported Tin Chloride: As a Recyclable Catalyst for the Silylation of Hydroxyl Groups with HMDS
作者:Khodabakhsh Niknam、Mohammad Ali Zolfigol、Dariush Saberi、Hajar Molaee
DOI:10.1002/jccs.200900181
日期:2009.12
Silica‐supportedtinchloride [SiO2‐Sn(Cl)4‐n] has been prepared by mixing tinchloride with activated silica gel in toluene under refluxing conditions for one day. A range of primary, secondary, and tertiary alcohols as well as phenolic hydroxylgroups were converted into their corresponding trimethylsilyl ethers with hexamethyldisilazane in the presence of catalytic amounts of silica‐supported tin