Cleavage of the C-Si bond in trifluoro(phenyl)silane with aliphatic alcohols
Trifluoro(phenyl)silane reacts with aliphatic alcohols under reflux. The reaction involves not only Si-F bond cleavage to form ethoxyfluoro(phenyl) silanes, but also C-Si bond cleavage to form benzene and alkoxyfluoro- and tetraalkoxysilanes. The formation of the latter products was proved by 19F and 29Si NMR spectroscopy and also by model disproportionation reactions of trifluoro(phenyl)silane with trimethoxy-(phenyl)-, tetramethoxy-, or tetraethoxysilanes.
Voronkov,Boyarkina,Gebel',Albanov,Basenko
p. 1927 - 1929
(2008/02/03)
A convenient preparation of pentafluorophenyl( fluoro) silanes: Reactivity of pentafluorophenyltrifluorosilane
Pentafluorophenyl(fluoro)silanes (C6F5)nSiF4-n (n = 1, 2) were prepared from the corresponding ethoxysilanes by sequential chlorodeethoxylation with SOCl2 and fluoridation of chlorosilanes with SbF3. The conversion of C6F5Si(OEt)3 and C6F5SiCl3 into C6F5SiF3 with anhydrous HF was described. Some reactions of C6F5SiF3 with electrophiles and nucleophiles were studied.