A New Synthesis of Organofluorosilicon Hydrides

Selective Synthesis of Fluoro-, Fluorohydro-, and Chlorofluorosilanes from Hydrosilanes with the Use of a CuCl2(CuI)/KF Reagent

“…To date, several methods are available for the synthesis of fluorosilanes. The methods involve the reactions of siloxy compounds with NH 4 F in H 2 SO 4 , hydrofluoric acid, and BF 3 etherate, halogen exchange of chlorosilanes with SbF 3 , ZnF 2 , NH 4 F, CuF 2 , Na 2 SiF 6 , NaPF 6 , NaSbF 6 , NaBF 4 , and Me 3 SnF, and fluorination of hydrosilanes with AgF, PF 5 , Ph 3 CBF 4 , SbF 3 , NOBF 4 or NO 2 BF 4 , and CuF 2 /CCl 4 …”

“…Tang et al reported monofluorination of dihydrosilanes with SbF 3 . However, a toxic 14,16 or costly 15 reagent must be used for these methods; moreover, these reactions are restricted to only the hydrosilanes bearing alkyl substituents. − …”

Meerwein's Reagent Mediated, Significantly Enhanced Nucleophilic Fluorination on Alkoxysilanes

“…7,8 Olah and co-workers used highly reactive nitrosonium tetrafluoroborate or nitronium tetrafluoroborate to generate fluorosilanes. 9 Other methods include the use of triphenylcarbenium tetrafluoroborate, 10 phosphorous pentafluoride, 11 silver fluoride, 12 copper(II) fluoride (CuF 2 )-CCl 4 , 13 and copper(II) chloride (copper iodide)/potassium iodide. 14 The methods to generate fluorosilanes from alkoxysilanes include the use of ammonium fluoride (NH 4 F) in H 2 SO 4 , 15 hydrofluoric acid, 16 and boron trifluoride diethyl etherate.…”