Abstract: | Formation of organosilicon compounds. XXXXVI. Si-fluorinated carbosilanes Compounds (1)–(7) (see “Inhaltsübersicht”) are obtained by reaction of carbosilanes containing Si? Cl groups with ZnF2. The linear compounds (8) and (9) are prepared from ZnF2 and (Cl3Si)2CCl2, and (Cl3Si? CCl2)SiCl2, respectively, whereas the cyclic compounds are formed by photochemical chlorination. Photochemical chlorination of (3) goes via compounds (13) and (14) (isolation is possible); both of them can be prepared too by reaction of Si? Cl derivatives with ZnF2. Compounds (16) and (17) are obtained from the corresponding Si? Cl derivatives. |