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Lithium triethylborohydride : ウィキペディア英語版
Lithium triethylborohydride

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Lithium triethylborohydride is the organoboron compound with the formula LiEt3BH). Commonly referred to as LiTEBH or Superhydride, it is a powerful reducing agent used in organometallic and organic chemistry. LiTEBH is far more reducing than lithium borohydride and lithium aluminium hydride. It is a colorless or white solid but is typically marketed as a THF solution.〔Marek Zaidlewicz, Herbert C. Brown "Lithium Triethylborohydride" Encyclopedia of Reagents for Organic Synthesis 2001, John Wiley & Sons. 〕 The related reducing agent, sodium triethylborohydride, is commercially available as toluene solutions.
==Preparation==
LiTEBH and related compounds of lithium hydride were discovered in the course of "War Research" in the period of 1942-45 at the University of Chicago by H.C. Brown and H.I. Schlesinger.〔Krishnamurthy, S. ''Aldrichim. Acta.'' 1974, ''7,'' 55.〕 LiTEBH is most commonly produced by the reaction between lithium hydride (LiH) and triethylborane (Et3B) in tetrahydrofuran (THF):
:LiH + Et3B → LiEt3BH
LiTEBH in THF appears to be stable indefinitely under an inert atmosphere.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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