Reaktion #216400

Reaktionsgleichung

1,3-divinyltetramethyldisiloxane

dimethylchlorosilane

2-allyloxyethyl phenyl ether

→

3-(2-phenoxyethoxy)propyldimethylchlorosilane

Ausbeute 80.2%

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturthe mixture is heated
2. 2
   Temperaturat reflux under a nitrogen atmosphere
3. 3
   workup.ADDITIONare added dropwise over the course of about 2 hours
4. 4
   Sonstigebeing adjusted to 80° C
5. 5
   Sonstigebeing taken off at 95°-110° C.

Vorschrift

6 mg of platinum in the form of a solution of the complex with 1,3-divinyltetramethyldisiloxane are added to 290 ml (2.6 mol) of dimethylchlorosilane and the mixture is heated at reflux under a nitrogen atmosphere. 356 g of the 2-allyloxyethyl phenyl ether whose preparation is described above under a) are added dropwise over the course of about 2 hours, the temperature of the mixture being adjusted to 80° C. After 2 hours the reflux comes virtually to an end. The crude product is fractionated in vacuo, the main fraction being taken off at 95°-110° C. (2 hPa). 437 g of 3-(2-phenoxyethoxy)propyldimethylchlorosilane are obtained with an acid number of 207 (theoretically 205). The 1H NMR spectrum shows that the product contains neither starting material nor its 1-propeneoxy isomer.

Quelle