ANIONIC SYNTHESIS OF TRIALKOXYSILYL-FUNCTIONALIZED POLYMERS

摘要

A new general functionalization methodology (GFM) is applied to the synthesis of trimethoxysilyl-functionalized polymers. This GFM involves (a) the preparation of a well-defined polymeric organolithium compound (PLi) using alkyllithium initiated anionic polymerization; (b) quantitative silyl hydride-functionalization of PLi with chlorodimethylsilane to form PSi(CH_3)_2H; (c) hydrosilation of PSi(CH3_)_2H with vinyltrimethoxysilane in the presence of Karsteadt's catalyst. The desired PSi(OCH_3)_3 was obtained in > 80 % yield. The product was characterized by SEC, ~1H and ~(13)C NMR and MALDI-TOF mass spectrometry.