(Trimethylsilyl)vinyllithium: I. The reaction of(1- and trans-2-bromovinyl)trimethylsilane with lithium metal

Add time:09/07/2019    Source:sciencedirect.com

(1- and trans-2-bromovinyl)trimethylsilane react rapidly with lithium in ether, however, dehydrohalogenation and coupling reactions preclude good yields of the lithium reagent. In situ trapping with excess trimethylchlorosilane yields trans-bis(trimethylsilyl)ethylene and demonstrates >80% conversion to lithium reagents. In this latter case, prolonged reaction with lithium leads to reductive silylation of the derivative product and formation of 2,2,4,4,7,7-hexamethyl-6-(trimethylsilyl)-2,4,7-trisilaoctane.

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