Synthesis and spectral properties of alkylarylcyclopolysilanes

Abstract

The coupling reaction of alkylaryldichlorosilane in THF with an excess of lithium in the presence of hexaphenyldisilane or trimethyltriphenyldisilane gave the major products, (PhMeSi)6, (p-MeC6H4SiMe)6, (o-MeC6H4SiMe)5, (PhCH2SiMe)6, (PhEtSi)5 and (PhSiCH2CH:CH2)6, which, were identified and characterized with NMR, IR, MS and UV spectroscopy. HPLC identification of the product mixtures of (PhMeSi)n revealed that various products with different ring size and geometric isomerization of the substituents might also exist depending on the mole ratio of starting materials and presence or absence of the catalyst.

Key words: SPECTROGRAPHIC ANALYSIS, CHLOROSILANE, LITHIUM, POLYSILANE, COUPLING REACTION

CLC Number:

O657

Cite this article

LIU WEITAI;CHEN SHANMEI. Synthesis and spectral properties of alkylarylcyclopolysilanes[J]. Chin. J. Org. Chem., 1988, 8(1): 37-41.

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烷基芳基环聚硅烷[RArSi)n,n=5,6]的合成及其波谱性质