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Issue 46, 2016
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Synthesis and study of an unprecedented 1-hydro-1-lithio-1-silafluorene anion

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Abstract

The 1-hydro-1-lithio-silafluorene anion 2 has been isolated and characterized by single-crystal X-ray analysis for the first time. Three tetrahydrofuran molecules coordinate with lithium atoms in the crystal structure of 2. 2 was reacted with a number of electrophilic reagents and it can be used as a useful reagent for generating various functional hydrogen-substituted silafluorenes. Treatment of 2 with 2 equiv. of chlorobis(isopropyl)phosphine afforded chloro-substituted silafluorene 4. The reaction of 8 which has a SiH–SiBr fragment with IiPr2Me2 (IiPr2: 2,5-diisopropyl-3,4-dimethylimidazol-1-ylidene) led to the formation of an Si–Si bond cleavage product, NHC-stabilized silacyclopentadienylidene 9.

Graphical abstract: Synthesis and study of an unprecedented 1-hydro-1-lithio-1-silafluorene anion

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Article information


Submitted
24 Jun 2016
Accepted
28 Oct 2016
First published
28 Oct 2016

Dalton Trans., 2016,45, 18447-18449
Article type
Communication

Synthesis and study of an unprecedented 1-hydro-1-lithio-1-silafluorene anion

D. Tian, X. Li, Y. Liu, Y. Cao, T. Li, H. Hu and C. Cui, Dalton Trans., 2016, 45, 18447
DOI: 10.1039/C6DT02533A

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