Alkoxysilane chlorosilane transformation

Transformation of chlorosilane to alkoxysilane 472 Transformation of chlorosilane to aminosilane 473... 

Some transformations at silicon atom have been performed in order to prepare a series of SMA derivatives. They consist of the nucleophilic substitutions of heteroatoms directly linked to silicon, such as the hydrolysis of alkoxysilanes and chlorosilanes into silanols or siloxanes, or the transesterification of alkoxysilanes.17,266-268... 

Chlorosilanes are the most important functional silicon compounds. As described above, chlorosilanes can be used for silicon—carbon and silicon—silicon bond formation. In addition, chlorosilanes can be converted into other functional silicon compounds, such as hydrosilanes, alkoxysilanes, and aminosi-lanes. Hydrosilanes, alkoxysilanes, and aminosilanes can be transformed furthermore into other functional silicon compounds. Combination of functional group transformation and silicon-carbon and silicon—silicon bond formation of chlorosilanes are essential for the construction of organosilicon clusters. 

Chlorosilanes can be transformed into alkoxysilanes with alcohol and amine. Triethylamine, pyridine, and ammonia are usually used as amines. In the next example, imidazole, a relatively strong base, and Ai,Ai-dimethylformamide (DMF) were used to promote alkoxylation of tetraisopropyl-substituted dichlorodisilane. 

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