1-Chloro-1,3-dimethyl-1,3-diorganyl-3-(trimethylsilylamino)disiloxanes

Resumo

The main products of the reaction of 1,3-dichloro-1,3-dimethyl-1,3-diorganyldisiloxanes with hexamethyldisilazane (molar ratio 1 : 1, 20 °C) are the earlier unknown linear 1-chloro-1,3-dimethyl-1,3-diorganyl-3-(trimethylsilylamino)disiloxanes of the general formula ClMeRSiOSiMeRNHSiMe₃ (1) (R = ClCH₂ (a), Me (b), Vin (c), Ph (d)) obtained in up to 53—72% yield and 1,3-dimethyl-1,3-diorganyl-1,3-bis(trimethylsilylamino)disiloxanes of the general formula (Me₃SiNH)MeRSiOSiMeR(NHSiMe₃) (2a—d) (7—12% yield). Thermolysis of compounds 1a—d leads to the formation of cyclic silazaoxanes. A plausible scheme for their formation was suggested.