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Trialkylsilyl-substituted pentalene ligands
journal contributionposted on 2023-06-07, 20:35 authored by Geoff Cloke
The reaction between [C8H6][Li(DME)]2 and chlorotrimethylsilane affords the trimethylsilyl-substituted dihydropentalene C8H6(SiMe3-1,4)2, which may be deprotonated with nBuLi in dimethoxyethane to give [C8H4(SiMe3-1,4)2][Li(DME)]2; the latter reacts with chlorotrimethylsilane to give C8H4(SiMe3-1,1',4,4')4. Similarly, treatment of [C8H6][Li(DME)]2 with triisopropylsilyl triflate gives C8H6(SiiPr3-1,4)2; deprotonation of the latter with KNH2 in diethyl ether affords [C8H4(SiiPr3-1,4)2][K]2, which has been crystallographically characterized and exhibits a chain structure in the solid state.
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