Different Strategies to Anchor Organotin Methoxides on Silica and Their (Re)Use as Heterogeneous Catalysts for Transesterification Reactions

Immobilization of isolated dimethyltin species on crystalline silicates through surface modification of layered octosilicate

“…We have focused on alkyltin chlorides (R n SnCl 4−n ) as a metal precursor because the number of highly reactive Sn-Cl bonds can be easily controlled by introducing relatively stable Sn-C bonds. [33][34][35][36] This feature of Sn is clearly distinctive from the organometallic compounds of transition metals such as Ti and Zr, where M-C bonds are highly reactive. 37,38 Recently, Snmodified silica has attracted considerable attention as Lewis acid catalysts.…”