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

Add time:08/14/2019    Source:sciencedirect.com

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.

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