Triethoxysilane → Vinyltriethoxysilane

Reaktionsgleichung

[SiH4].[CH2:2]([O:4][SiH](OCC)OCC)[CH3:3].[CH2:12]([O:14][Si:15]([O:31][CH2:32][CH3:33])([O:28][CH2:29][CH3:30])[CH2:16][CH2:17][Si:18]([O:25][CH2:26][CH3:27])([O:22][CH2:23][CH3:24])[O:19][CH2:20][CH3:21])[CH3:13]>>[CH:16]([Si:15]([O:28][CH2:29][CH3:30])([O:14][CH2:12][CH3:13])[O:31][CH2:32][CH3:33])=[CH2:17].[CH2:2]([O:4][Si:18]([O:19][CH2:20][CH3:21])([O:22][CH2:23][CH3:24])[O:25][CH2:26][CH3:27])[CH3:3]

Komponenten

Edukt 3

HCID 13830Triethoxysilane

HCID 23953Silane

HCID 85266Bis(triethoxysilyl)ethane

Produkt 2

HCID 6516VinyltriethoxysilaneAusbeute 25 %

HCID 6517Tetraethoxysilane

Versuchsvorschrift

The reaction was carried out in accordance with the procedure of Comparative Example 2, except that the silane used was triethoxysilane and the reaction temperature was 150° C. The reaction was monitored by GPC and was completed in one hour. The major product formed was 1,2-bis(triethoxysilyl)ethane (72%), with vinyltriethoxysilane (25%) and tetraethoxysilane also being formed (3%). With a primary alkyl silane and at lower reaction temperatures, the undesired bis(silyl)ethane was the main reaction product.