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Synlett 1990; 1990(6): 344
DOI: 10.1055/s-1990-21087
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Synthesis of 1,1,3,3-Tetramethyl-1,3-disilacyclobutanes Using Lithium Metal or Organolithium Reagents

Jadwiga Chmielecka* , Wlodzimierz Stańczyk
  • *Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, PL-90-363 Lódź, Poland
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Publication Date:
08 March 2002 (online)

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(Bromomethyl)chlorodimethylsilane reacts with lithium metal or organolithium reagents to give a transient silaethylene species which dimerizes to give 1,1,3,3-tetramethyl-1,3-disilacyclobutane. When butyllithium is used the formation of 1,3-disilacyclobutane is accompanied by the cyclic trimer 1,3,5-trisilacyclohexane.