Tetrahedron letters

Bis [bis (methylthio) lithiomethyl] dimethylsilanes: A useful reagent for the synthesis of polysilacarbacycles via disilylation

M Shimizu, M Iwakubo, Y Nishihara, T Hiyama

Index: Shimizu, Masaki; Iwakubo, Masayuki; Nishihara, Yasushi; Hiyama, Tamejiro Tetrahedron Letters, 1998 , vol. 39, # 20 p. 3193 - 3196

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Citation Number: 8

Abstract

Bis [bis (methylthio) lithiomethyl] dimethylsilane was generated from bis [bis (methylthio) methyl] dimethylsilane by deprotonation with t-BuLi in THF and allowed to react with various dichloro (poly) silanes to give the corresponding 4-to 7-membered polysilacarbacycles in moderate to good yields. The methylthio groups in the cyclized products were readily removed by radical reduction with Bu3SnH.