lithium triethylborohydride | 15003-13-1

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: lithium triethylborohydride
• 英文别名: LiBH4；Tetraaethyl boranat；Lithiumtetraaethyl-borat；lithium tetraethylborate；LiBEt4；Lithium;tetraethylboranuide
• CAS: 15003-13-1
• 化学式: C₈H₂₀B*Li
• 分子量: 133.999
• InChiKey: TYJKWVUTSMYEGY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.52
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  lithium triethylborohydride 以 正己烷 为溶剂， 生成 四乙基硼酸钠
  参考文献：
  名称：

  Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: B: B-Verb.8, 11.2.1, page 158 - 165

  摘要：

  DOI：
• 作为产物：
  描述：

  三乙基硼 、 乙基锂 生成 lithium triethylborohydride
  参考文献：
  名称：

  Preparation, Characterization, and Reactions of Lithium and Sodium Tetraalkylboron Compounds

  摘要：

  DOI：

  10.1021/jo01030a077
• 作为试剂：
  描述：

  邻溴三氟甲苯 在 吡啶 、 lithium triethylborohydride 、 potassium carbonate 、 三氟乙酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 33.0h， 生成 (2-((tetrahydro-2H-pyran-4-yl)methoxy)-5-((2-(2-(trifluoromethyl)phenyl)pyrrolidin-1-yl)sulfonyl)phenyl)methanol
  参考文献：
  名称：

  一类吡咯烷磺酰基衍生物RORγ调节剂及其 用途

  摘要：

  本发明涉及涉及结构如式(I)所示的化合物或其立体异构体、互变异构体或其药学上可接受的盐或其溶剂合物或者前药、其制备方法、含有这些调节剂的药物组合物及其在治疗RORγ介导的炎性、代谢性和自身免疫性疾病中的用途。R3选自：

  公开号：

  CN109111435B

文献信息

• Conventional Lithium Bases as Unconventional Sources of Methyl Anion:  Facile Me−Si and Me−C Bond Cleavage in RLi, R₂NLi, and BR₄^- by an Electrophilic Osmium Dihydride
  作者：Dmitry V. Yandulov、John C. Huffman、Kenneth G. Caulton

  DOI：10.1021/om0200104

  日期：2002.9.1

  and compete for the Os with, the original base, the unsaturated silicon species formed by Si−Me cleavage react with the remaining base by 1,2-addition of (N,C)-Li, forming intermediates that are also reactive by β-Me- transfer. A complex mixture of Os-free coproducts is obtained in both cases. The structural features of 1+ responsible for its unusual reactivity are discussed.

  顺式，反式-Os（H）2（OTf）（NO）（P i Pr 3）2（1-OTf）和Os（H）2（NO）（P i Pr 3）的其他几种前体（1-X））2 +（1 +）与（ME反应3 Si）的2 NLi等，（ME 3 Si）的2 CHLi，锂2,2,6,6-四甲基（TMPLi）中，Me 3 SICH 2 Li和B（CH 2森达3）4 -由一个极不寻常的，轻便β-ME -转移，对于在非极性溶剂的前两个专属的反应途径。已经检验了一系列烷基锂和烷基酰胺和有机硼酸试剂以显示直接β-R的普遍发生“ -转移（R” = H，Me）的给OS电体，是用于完全选择性β-H -在β-我-，唯一（令人惊讶的）NpLi例外。的β-R“消除被排除作为净β-R的机构” -转移为两个代表性的RLi例R” = H，Me和单电子转移机理被证明是不起作用为tetraalkylborates。机理研究还揭示了Li在RLi和R 2 NL
• Electrophilic (Li+) acceleration of C–H reductive elimination and oxidative addition reactions of Os(II)/Os(0) nitrosyl complexesElectronic supplementary information (ESI) available: full experimental and computational details. See http://www.rsc.org/suppdata/nj/b2/b200180m/
  作者：Dmitry V. Yandulov、Kenneth G. Caulton

  DOI：10.1039/b200180m

  日期：2002.5.22

  The reductive elimination of methane from cis,trans-Os(H)2(CH3)(NO)L2 (L=PiPr3) in benzene is accelerated by added LiN(SiMe3)2, with 1H NMR and IR evidence for binding of the lithium electrophile to NO oxygen. Oxidative addition of benzene to the transient OsH(NO)L2, to give cis,trans-Os(H)2(C6H5)(NO)L2, is also accelerated by LiN(SiMe3)2. DFT calculations of the reaction path with and without LiNMe2

  从水中的顺，反-Os（H）2（CH 3）（NO）L 2 （L = P i Pr 3）还原还原甲烷。苯通过加入的LiN（森达加速3）2，用1 H NMR 和 红外亲电子锂与NO氧结合的证据。氧化加成苯到瞬态OsH（NO）L 2，得到顺式，反式-Os（H）2（C 6 H 5）（NO）L 2，也被LiN（SiMe 3）2加速。使用和不使用LiNMe 2的反应路径的DFT计算表明，速率加速是由于TS中向NO的更大的背向供体，是由于氧化加成/还原消除过渡态的优先稳定所致。反过来，这可归因于Li亲电体在NO氧上对占据的Os d和C–Hσ轨道之间的填充-填充排斥的缓解。
• Understanding abnormal potential behaviors at the 1st charge in Li₂S cathode material for rechargeable Li–S batteries
  作者：Yongjo Jung、Byoungwoo Kang

  DOI：10.1039/c6cp03146c

  日期：——

  In this study, electrochemical behaviors of Li2S such as a large potential barrier at the beginning of the 1st charging process and a continuous increase in potential to ∼4 V during the rest of this process were understood through X-ray photoelectron spectroscopy measurements and electrochemical evaluations for a full utilization of Li2S. The large potential barrier to the 1st charge in Li2S can be

  在这项研究中，通过X射线光电子能谱测量法了解了Li 2 S的电化学行为，例如在第一次充电过程开始时的大势垒以及在该过程其余部分期间电势连续增加至约4V。锂的充分利用电化学评价2 S的大的势垒，以李的第一电荷2 S可通过绝缘氧化产物的存在（栗引起2 SO 3或Li 2 SO 4状结构）；简单的表面蚀刻可以去除它们，从而减小势垒。即使势垒被大大降低，由于电势的连续增加，Li 2 S的电化学活性也可能不会得到改善。电位的增加与Li 2 S转化反应引起的极化有关。极化会影响后续循环中Li 2 S的利用率。我们推测，在电势的增加与氧化产物如Li的分解2 CO 3样或Li 2 O形状结构的锂的表面上2S粒子。这些发现表明，通过控制Li 2 S的表面特性，特别是表面氧化产物，可以实现Li 2 S的充分利用。
• Binuclear Palladium Complexes with Bridging Hydrides. Unusual Coordination Behavior of LiBEt4 and NaBEt4
  作者：Michael D. Fryzuk、Brian R. Lloyd、Guy K. B. Clentsmith、Steven J. Rettig

  DOI：10.1021/ja00088a017

  日期：1994.5

  The reaction of Pd(dippp)Cl-2 (dippp = 1,3-bis(diisopropylphosphino)propane) with a 1:1 mixture of LiBEt(2)H(2) and LiBEt(4) in THF generates the binuclear hydride derivative [(dippp)Pd](2)(mu-H)(2).LiBEt(4) (1) in which the LiBEt(4) is bound to the palladium hydride core. The bare palladium hydride dimer [(dippp)Pd](2)(mu-H)(2) (2) was prepared by reaction of 2 equiv of KBEt(3)H in toluene with Pd(dippp)I-2. Addition of LiBEt(4) to the bare palladium dimer 2 generates the LiBEt(4) adduct 1; this approach has been extended to the preparation of [(dippp)Pd](2)(mu-H)2.NaBEt(4) (3) and [(dippp)Pd](2)(mu-H)(2).LiAlEt(4) (4) by the addition of NaBEt(4) and LiAlEt(4) respectively to 2. On the basis of NMR spectroscopy, there is no evidence for dissociation of the lithium of sodium berate or aluminate salts from the hydride dimer but the ME'Et(4) (M = Li, Na; E' = B, Al) units are labile on the basis of exchange studies and variable temperature NMR data. Crystals of [(dippp)Pd](2)(mu-H)(2).LiBEt(4)0.5(C6H14) (1) are monoclinic, a = 11.537(2) Angstrom, b = 19.114(2) Angstrom, c = 24.020(1) Angstrom, beta = 98.674(9)degrees, Z = 4, space group P2(1)/n; those of [(dippp)Pd](2)(mu-H)(2) (2) are monoclinic, a = 13.128(1) Angstrom, b = 14.362(4) Angstrom, c = 20.353(1) Angstrom, beta = 99.593(6)degrees, Z = 4, space group P2(1)/n; and those of [(dippp)-Pd](2)(mu-H)(2).NaBEt(4) (3) are monoclinic, a = 20.099(2) Angstrom, b = 11.457(5) Angstrom, c = 21.600(3) Angstrom, beta = 92.87(1)degrees, Z = 4, space group P2(1)/c. The structures were solved by the Patterson method and were refined by full-matrix least-squares procedures to R = 0.033, 0.052, and 0.033 (R(W) = 0.029, 0.054, and 0.028) for 5954, 4560, and 5018 reflections with I greater than or equal to 3 sigma(I), respectively. In the solid-state structure of 1, there are three C-H...Li interactions from the ethyl groups attached to boron whereas in the solid-state structure of 3 there are four such C-H...Na interactions.
• Grassberger, M. A.; Koester, R., Angewandte Chemie - International Edition in English, 1969, vol. 8, p. 275 - 276
  作者：Grassberger, M. A.、Koester, R.

  DOI：——

  日期：——