Organosilicon compounds XXXII. The cleavage of aryl-silicon bonds by sulphur trioxide

RW Bott, C Eaborn, T Hashimoto

Index: Bott,R.W. et al. Journal of Organometallic Chemistry, 1965 , vol. 3, p. 442 - 447

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Citation Number: 27

Abstract

Abstract Aryltrimethylsilanes, ArSiMe 3, react with sulphur trioxide in carbon tetrachloride to give the sulphonic esters, ArSO 2 OSiMe 3, which undergo hydrolysis readily to the sulphonic acids ArSO 3 H. The reaction provides a means of introducing a sulpho group at a specific position of the aromatic ring; thus from m-tolyltrimethylsilane, m-toluenesulphonic acid is obtained in 80% yield.