論文

査読有り
2005年11月

Generation and reactions of overcrowded diaryldilithiostannane and diaryldipotassiostannane

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
  • T Tajima
  • ,
  • N Takeda
  • ,
  • T Sasamori
  • ,
  • N Tokitoh

21
開始ページ
4291
終了ページ
4300
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/eijc.200500375
出版者・発行元
WILEY-V C H VERLAG GMBH

Exhaustive reduction of an overcrowded dibromostannane bearing two bulky aromatic substituents, Tbt(Dip)SnBr2 {Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl; Dip = 2,6-diisopropylphenyl}, with an excess amount of lithium naphthalenide in THF at -78 degrees C gave the corresponding dilithiostannane, Tbt(Dip)SnLi2, the generation of which was confirmed by trapping experiments with some electrophiles together with Sn-119 and Li-7 NMR spectroscopy. The diaryldilithiostannane was found to be stable in solution under an inert gas below -25 degrees C. The potassium analogue, Tbt(Dip)SnK2, was also generated by the reduction of the dibromostannane in THF at -78 degrees C by the use of KC8 as a reductant. The reactions of dilithiostannane and dipotassiostannane obtained with o-dibromobenzene did not give a stannacyclopropabenzene derivative but an unexpected cyclization product, a stannacyclobutabenzene derivative, in contrast to the reactions of the corresponding dilithiosilane and dilithiogermane, Tbt(Dip)ELi2 (E = Si, Ge), with o-dibromobenzene leading to the formation of the corresponding metallacyclopropabenzenes as stable crystalline compounds. A preliminary result of the synthesis of a tin-tellurium double-bond compound from the dilithiostannane is also presented. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005).

リンク情報
DOI
https://doi.org/10.1002/eijc.200500375
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000233297800006&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/eijc.200500375
  • ISSN : 1434-1948
  • Web of Science ID : WOS:000233297800006

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