Insertion of (E)-(1,2-dihalovinyl)lithium and (2-haloethynyl)lithium into zirconacycles
文献情報
David Norton, Richard J. Whitby, Ed Griffen
Insertion of (E)-(1,2-dihalovinyl)lithium into zirconacyclopentenes was followed by elimination of halide to afford an alkyne which inserts intramolecularly into the resulting carbon–zirconocenium bond to give a methylenecyclopentene, whereas insertion of (2-haloethynyl)lithium gives the same product via a zirconocene alkenylidene.
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