SYNTHESIS OF MONO(SILYL)HYDROXYLAMINES AN D BIS(SILYL)HYDROXYLAMINES

Silylamines reacts with hydroxylaminehydrochlorid to give the monosily lhydroxylamines: R2FSiONH2 (R = CMe3 1), R2R'SiONH2 (R = CMe3, R' = Me 2), R-2(NH2)SiONH2 (R = CMe3 3). The reaction of 1 in the present of HCl-acceptors or the reaction of lithiated 1 with Me3SiCl or F2Si(CMe3 )(2) leads to the formation of bis(silyl)hydroxylamines, (Me3C)(2)FSiO NHSiMe3 4, and (Me3C)(2)FSiONHSiF(CMe3)(2) 5. The lithium derivatives of Me3SiONH2 and 2 react with fluorosilanes to the bis(silyl)hydroxyla mines: Me3SiONHSiFRR' (R = R' = CMe3, 6, R = CMe3, R' = F 7, R = R' = NMeSiMe3 8), (Me3C)(2)MeSiNHOSiFRR' (R = CMe3, R' = F 9, R = (Me3C)(3) C6H2, R' = F 10, R = R' = CMe3 11, R = R' = CHMe2 12). The bis(silyl)h ydroxylamines 4 and 6 are structure isomers.