Silane → 1,2-Bis(triisopropoxysilyl)ethane
Reaktionsgleichung
[SiH4].[CH:2]([O:5][SiH:6]([O:11][CH:12]([CH3:14])[CH3:13])[O:7][CH:8]([CH3:10])[CH3:9])([CH3:4])[CH3:3].[CH:15]([Si:17]([O:26][CH:27]([CH3:29])[CH3:28])([O:22][CH:23]([CH3:25])[CH3:24])[O:18][CH:19]([CH3:21])[CH3:20])=[CH2:16]>>[CH:8]([O:7][Si:6]([O:5][CH:2]([CH3:4])[CH3:3])([O:11][CH:12]([CH3:14])[CH3:13])[CH2:16][CH2:15][Si:17]([O:18][CH:19]([CH3:20])[CH3:21])([O:22][CH:23]([CH3:25])[CH3:24])[O:26][CH:27]([CH3:28])[CH3:29])([CH3:10])[CH3:9].[CH:8]([O:7][Si:6]([O:18][CH:19]([CH3:21])[CH3:20])([O:5][CH:2]([CH3:4])[CH3:3])[O:11][CH:12]([CH3:14])[CH3:13])([CH3:10])[CH3:9]Komponenten
5
Versuchsvorschrift
The reaction was carried out as in Comparative Example 5 except that the starting silane used was triisopropoxysilane, a secondary alkoxysilane, and the reaction temperature was maintained at 140° C. After three hours the reaction was complete as monitored by GPC. The major product formed was vinyltriisopropoxysilane (95%). 1,2-bis(triisopropoxysilyl)ethane (3%) and tetraisopropoxysilane (2%) by-products were also formed.