反应详情

To a solution of 4-methallyloxybenzaldehyde (17.62 g, 0.1 mol) and catalyst (complex containing 3-3.5 wt % of Pt in cyclovinylmethylsiloxane, marketed by Huls under the trademark Petrarch PCO85 : 300 μl) in 50 ml of dry toluene heated to 80° C., were added dropwise over 30 minutes 24.47 g (0.11 mol) of heptamethyltrisiloxane. The mixture was maintained at this temperature for 26 hours. The reaction mixture was maintained concentrated and, after distillation at a pressure of 0.1 mmHg (fractions distilling at 135-141° C.), 34.1 g of 4-[2-methyl-3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]-propyloxy]benzaldehyde (yield: 85%) were obtained in the form of a colorless oil.

1. temperatureThe mixture was maintained at this temperature for 26 hours
2. temperatureThe reaction mixture was maintained
3. concentrationconcentrated
4. distillationafter distillation
5. distillationat a pressure of 0.1 mmHg (fractions distilling at 135-141° C.)