Methyl(vinyl)dichlorosilane reacts with DMSO in the presence of hexame
thyldisiloxane to give the corresponding linear oligosiloxanes of the
general formula Me3Si(OSiMeVin)(n)OSiMe3 (n = 1-6) as well as MeSi(OSi
Me3)(3) and Me3Si(MeOSiVin)(m)OSi(OSiMe3)(Me)OSiMe3 (m = 1-2). The sam
e reaction in the presence of chlorotrimethylsilane results in oligome
rs of the general formula Me3Si(OSiMeVin)(n)Cl (n = 1-3). A possible s
cheme of their formation is discussed.