Anionic Synthesis of α-Functionalized Polymers by Combination of 1,1-Diphenylethylene and Hydrosilation Chemistry

摘要

A new general anionic functionalization method (GFM) for preparing α-chain-end functionalized polymers utilizes the initiator formed from sec-butyllithium and dimethyl[4-(1-phenylvinyl)-phenyl]silane (DPESiH) followed by hydrosilation with substituted alkenes. α-(4-dimethylsilyl hydride)phenyl-functionalized polystyrene and poly(methyl methacrylate) were synthesized in quantitative yield by living anionic polymerization. These α-silyl hydride-functionalized polymers were further functionalized by reaction with tridecafluorooctene in the present of Karstedt's hydrosilation catalyst. These tridecafluorooctane-functionalized polymers were characterized by SEC, FTIR, ~1H-, ~(13)C- and ~(19)F-NMR spectroscopy.