The cohydrolysis of CH ≡ CSi(CH3)2OC2H5 with ClSi(CH3)2CH2Cl gave the previously unknown 1-ethynyl-3-chloromethyltetramethyldisiloxane. The bromomagnesium derivatives of the latter were reacted with CH2O, CH3COCH3, Br2, and ClSi(CH3)3. In addition, the compound was subjected to hydrosilylation, entered into the diene condensation with hexachlorocyclopentadiene, and reacted with NaI, morpholine, and piperidine.
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Yarosh, O.G., Burnashova, T.D. & Voronkov, M.G. 1-ethynyl-3-chloromethyltetramethyldisiloxane and some of its reactions. Russ Chem Bull 25, 1768–1771 (1976). https://doi.org/10.1007/BF00921454