Synthesis and Characterization of Cage and Bicyclic Silsesquioxanes via Dehydration of

@inproceedings{Unno1999SynthesisAC,
  title={Synthesis and Characterization of Cage and Bicyclic Silsesquioxanes via Dehydration of},
  author={Masafumi Unno and Shamsul Bahri Alias and Miwako Arai and Keisuke Takada and Ryoji Tanaka and Hideyuki Matsumoto},
  year={1999}
}
Synthesis of cage and ladder silsesquioxanes by the dehydration of silanols using dicyclohexylcarbodiimide (DCC) is described. The reaction of 1,3-dicyclohexyldisiloxane-1,1,3,3-tetraol with DCC gave octa(cyclohexylsilsesquioxane) in 13% yield. The bicyclic ladder siloxane 3 (Ph8Thex2Si6O7) was prepared from 1,1,3,3tetraphenyldisiloxane-1,3-diol and 1,3-dithexyldisiloxane-1,1,3,3-tetraol (Thex or thexyl denotes 1,1,2-trimethylpropy) at 80 °C. In this reaction, the propellane-type cage siloxane… CONTINUE READING

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Copyright # 1999 John Wiley & Sons , Ltd

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