Study of the alkylation of chlorosilanes. Part II. Synthesis of (fluoroalkyl)chlorosilanes and tetra(fluroalkyl)silanes via hydrosilylation

Article abstract of DOI:10.1016/0022-1139(93)02999-U

The hydrosilylation of various fluorinated olefins and of a diene with different chlorosilanes and with a tri(fluoroalkyl)silane, in the presence of a peroxide or a Pt catalyst, is reported.The reactivity is influenced considerably by the structure of the silane and of the fluorinated olefin.The following (fluoroalkyl)chlorosilanes and (fluoroalkyl)-α,ω-chlorodisilanes are described; C6F13(CH2)nSiR¹R²Cl where n = 2 or 3 and (ClR¹R²SiC2H4C3F6)2 with R¹ = R² = Cl, R¹ = Cl and R² = CH3 or C2H4CF3, R¹ = R² = CH3 and R¹ = CH3 and R² = C6H5.Three new tetra(fluoroalkyl)silanes have also been synthesized.All the products were characterized by 1H, 19F and 29Si NMR spectroscopy.