The highly enantiomerically enriched silyllithium compound lithiomethylphenyl(1-piperidinylmethyl)silane (4) reacts stereospecifically with chlorosilanes, but over a period of several hours slow racemization in solution at room temperature occurs, which can be supressed by a transmetalation reaction with MgBr2(thf)4.
C. Strohmann, J. Hörnig and D. Auer, Chem. Commun., 2002, 766 DOI: 10.1039/B111687H
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