Chemistry Letters

Synthesis and Structure of syn, anti, syn-Pentacyclic Ladder Oligomethylsilsesquioxane

H Seki, N Abe, Y Abe, T Gunji

Index: Seki, Hiroyasu; Abe, Noritaka; Abe, Yoshimoto; Gunji, Takahiro Chemistry Letters, 2011 , vol. 40, # 7 p. 722 - 723

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Citation Number: 7

Abstract

Novel pentacyclic ladder oligomethylsilsesquioxane was synthesized using cis, trans, cis- [MeSi (NCO) O] 4 as a building block. This compound was isolated in 13% yield by reprecipitation from the reaction mixture. X-ray crystallography revealed that pentacyclic rings assume a syn, anti, syn-configuration, resulting in the tube-like structure.