Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)

The previously unknown silole dianion [SiC(4)Et(4)](2−)•2[Li](+) (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl(2)SiC(4)Et(4), 2] with more than four equivalent of lithium in THF. (1)H-, (13)C-, and (29)Si-NMR data of 3 are compared with those of the...

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Autor principal: Hong, Jang-Hwan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2011
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6264215/
https://www.ncbi.nlm.nih.gov/pubmed/21926948
http://dx.doi.org/10.3390/molecules16098033
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author Hong, Jang-Hwan
author_facet Hong, Jang-Hwan
author_sort Hong, Jang-Hwan
collection PubMed
description The previously unknown silole dianion [SiC(4)Et(4)](2−)•2[Li](+) (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl(2)SiC(4)Et(4), 2] with more than four equivalent of lithium in THF. (1)H-, (13)C-, and (29)Si-NMR data of 3 are compared with those of the reported silole dianion [SiC(4)Ph(4)](2−). Trapping of 3 with trimethylchlorosilane gave 1,1-bis(trimethylsilyl)-2,3,4,5-tetraethyl-1-silacyclopentadiene [(Me(3)Si)(2)SiC(4)Et(4), 4] in high yield. The silole of 2 was synthesized in high yield in three steps by a modified procedure using Cp(2)ZrCl(2) via Cp(2)ZrC(4)Et(4) and 1,4-dibromo-1,2,3,4-tetraethyl-1,3-butadiene.
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spelling pubmed-62642152018-12-10 Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+) Hong, Jang-Hwan Molecules Communication The previously unknown silole dianion [SiC(4)Et(4)](2−)•2[Li](+) (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl(2)SiC(4)Et(4), 2] with more than four equivalent of lithium in THF. (1)H-, (13)C-, and (29)Si-NMR data of 3 are compared with those of the reported silole dianion [SiC(4)Ph(4)](2−). Trapping of 3 with trimethylchlorosilane gave 1,1-bis(trimethylsilyl)-2,3,4,5-tetraethyl-1-silacyclopentadiene [(Me(3)Si)(2)SiC(4)Et(4), 4] in high yield. The silole of 2 was synthesized in high yield in three steps by a modified procedure using Cp(2)ZrCl(2) via Cp(2)ZrC(4)Et(4) and 1,4-dibromo-1,2,3,4-tetraethyl-1,3-butadiene. MDPI 2011-09-16 /pmc/articles/PMC6264215/ /pubmed/21926948 http://dx.doi.org/10.3390/molecules16098033 Text en © 2011 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Communication
Hong, Jang-Hwan
Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title_full Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title_fullStr Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title_full_unstemmed Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title_short Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC(4)Et(4)](2−)•2[Li](+)
title_sort synthesis and nmr-study of the 2,3,4,5-tetraethylsilole dianion [sic(4)et(4)](2−)•2[li](+)
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6264215/
https://www.ncbi.nlm.nih.gov/pubmed/21926948
http://dx.doi.org/10.3390/molecules16098033
work_keys_str_mv AT hongjanghwan synthesisandnmrstudyofthe2345tetraethylsiloledianionsic4et422li

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