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In isopropyl alcohol; at 80 - 82℃; for 18h;Inert atmosphere;
{0070] 14.25g (0.0519 mol) of mono epoxy functional earhosilane (structure1)7 10 g (00519 moB of dimetlnlol propiome acid 6 l85g (0 0519 mol) ofN N -duneth lammo propant. I 2-diol and 27 5 g of isopiopanol \4ut. charged into a 3-neckflask attached with a condenser, under nitrogen. This mixture was quickly heated at 80-82 °C and stirred for I Sb. The flask was cooled to room temperature and isopropanol was removed at 40-45 °C under vacuum for 4h. Finally the sample was dried into anOVen at 50 ?C tot 3 das to obtain a xen light ?clIo iSLOUS gel MS contirmtd that the quaternary amrnomum salt as shown in Structure 3 (Figure 4) was formed with 80percentconversion (Product ID: QC?2),/