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[(6)Li]-n-butyllithium | 20535-67-5

中文名称
——
中文别名
——
英文名称
[(6)Li]-n-butyllithium
英文别名
n-butyl(6Li)lithium;lithium-6 n-butyllithium;[(6)Li]n-butyllithium;n-butyl{1-(6)}lithium;(6Li)-n-butyllithium;[6Li]n-Butyllithium
[(6)Li]-n-butyllithium化学式
CAS
20535-67-5
化学式
C4H9Li
mdl
——
分子量
63.1155
InChiKey
MZRVEZGGRBJDDB-HCMAANCNSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.37
  • 重原子数:
    5.0
  • 可旋转键数:
    2.0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    1.0
  • 拓扑面积:
    0.0
  • 氢给体数:
    0.0
  • 氢受体数:
    0.0

反应信息

  • 作为反应物:
    描述:
    [(6)Li]-n-butyllithium<1'-13C>-1'-Brommethylidencyclohexan 以 various solvent(s) 为溶剂, 生成
    参考文献:
    名称:
    13 C-NMR。Strukturinformation AUS DER 13 ℃,6节锂Kopplung
    摘要:
    低温13 C-NMR。有机锂衍生物的光谱学。- 13 ℃,6节锂耦合,强大的结构性信息
    DOI:
    10.1002/hlca.19830660128
  • 作为产物:
    描述:
    氯丁烷lithium 作用下, 以 正己烷 为溶剂, 反应 64.0h, 以54%的产率得到[(6)Li]-n-butyllithium
    参考文献:
    名称:
    对映纯和外消旋的N-苄基-N-(α-甲基苄基)酰胺锂在THF中的溶液相结构:低温6 Li和15 N NMR光谱研究
    摘要:
    N-苄基-N-(α-甲基苄基)酰胺锂的对映体是通过对α,β-不饱和酯进行共轭加成来不对称合成β-氨基酸衍生物的高效对映纯氨当量。双标记6锂(S)-15 N-苄基-15 N的6 Li和15 N NMR谱研究。-(α-甲基苄基)酰胺在低温下的THF溶液中显示出酰胺锂二聚体的存在是唯一可观察到的物质。对于这类共轭加成反应,可以在过渡态助记符中容纳单体或二聚的氨基酰胺锂反应性物质。由于对形成的各种二聚体的容易区分,该对映体纯的氨基酰胺锂与非手性的(例如二苄基氨基化锂)和C 2对称的(例如双-N,N -α-甲基苄基氨基化锂)对应物相比提供了独特的机会,可用于进一步的机理研究。
    DOI:
    10.1016/j.tetasy.2013.07.001
  • 作为试剂:
    描述:
    2-溴-1,3,5-三甲基苯[(6)Li]-n-butyllithium 作用下, 以 正戊烷 为溶剂, 反应 24.0h, 以94%的产率得到mesityllithium-6Li
    参考文献:
    名称:
    The Carbon-Lithium Bond in Monomeric Aryllithiums: Dynamics of Exchange, Relaxation, and Rotation
    摘要:
    Carbon-13 NMR line shape analysis of the lithium isotopomers of 2,4,6-tri-tert-butylphenyllithium monomer, 4, complexed to THF establishes that electric quadrupole induced relaxation of Li-7 is responsible for partial averaging of (1)J(C-13,Li-7). Th, dynamics of intramolecular carbon-lithium bond exchange between monomers of 4 in THF solutions have been monitored by NMR line shape analysis, signal averaging of (1)J(C-13,Li-6) observed above 240 K, yielding activation parameters of Delta H double dagger and Delta S double dagger of respectively 14.4 kcal/mol and 7 eu. All except the meta carbons of mesityllithium, 5, monomer tridentately complexed to N,N',N',N',N''-pentamethyldiethylenetriamine, PMDTA, are magnetically non-equivalent at 184 K, supporting an asymmetric structure in which lithium is chiral. With increasing temperature above 184 K the shifts between the ortho ring carbons, the ortho methyls; and two doublets due to methylenes progressively average to single lines at their respective centers, the result of increasingly fast rotation around the carbon-lithium bond, with resulting activation parameters of Delta H double dagger and Delta S double dagger of respectively 5 kcal/mol and -21 eu. It is proposed that rotation is chemically driven, the result of Li, N reversible dissociation accompanied by an uptake by Li of one THF molecule.
    DOI:
    10.1021/ja00128a020
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文献信息

  • Why is cis / trans stereoinversion with Li + (THF) 4 migration across the phenyl ring of α-lithiostyrene accelerated by two ortho -methyl groups?
    作者:Rudolf Knorr、Ernst Lattke、Jakob Ruhdorfer、Kathrin Ferchland、Ulrich von Roman
    DOI:10.1016/j.tet.2018.01.047
    日期:2018.4
    Common wisdom might anticipate that two methyl groups placed on a molecular migration route should act as an impediment. However, the “conducted tourmigration of Li+(THF)4 across the aryl ring (“π-route”) during the cis/trans stereoinversion of α-arylvinyllithiums had been found to occur with practically equal velocities in the presence of either one or two ortho-alkyl substituents. We now report
    常识可能会认为,分子迁移路线上的两个甲基应成为障碍。然而,发现在存在以下两种情况下,α +芳基乙烯基的顺/反立体反转过程中,Li +(THF)4通过芳基环(“π-途径”)的“传导游走”迁移几乎以相同的速度发生。一个或两个邻烷基取代基。我们现在报道,两个邻甲基基团的缺失都会阻碍立体反转过程。为了得到标题问题的答案,我们研究了邻位,邻位的聚集平衡和微溶剂化状态。通过批准的二级NMR标准确定'-未取代的α-苯乙烯。除了这些关于基态性质的必要知识外,我们提供的动力学证据表明,α-苯乙烯的顺/反立体反转反应受阻,是通过具有Li +(THF)4迁移的拟单分子离子机理进行的。
  • Enediolate–Dilithium Amide Mixed Aggregates in the Enantioselective Alkylation of Arylacetic Acids: Structural Studies and a Stereochemical Model
    作者:Yun Ma、Craig E. Stivala、Ashley M. Wright、Trevor Hayton、Jun Liang、Ivan Keresztes、Emil Lobkovsky、David B. Collum、Armen Zakarian
    DOI:10.1021/ja403076u
    日期:2013.11.13
    reactivities of intervening aggregates underlying highly selective asymmetric alkylations of carboxylic acid dianions (enediolates) mediated by the dilithium salt of a C2-symmetric chiral tetraamine. Crystallography shows a trilithiated n-butyllithium-dilithiated amide that has dimerized to a hexalithiated form. Spectroscopic studies implicate the non-dimerized trilithiated mixed aggregate. Reaction of the
    X 射线晶体学、(6)Li、(15)N 和 (13)C NMR 光谱以及密度泛函理论计算相结合,可以深入了解羧酸双阴离子高选择性不对称烷基化背后的干预聚集体的结构和反应性(烯二醇酯)由 C2 对称手性四胺的二盐介导。晶体学显示三化的正丁基锂-二化酰胺已二聚成六化形式。光谱研究表明非二聚化三混合聚集体。二化酰胺与衍生自苯乙酸的烯二醇二的反应提供了由溶液中的两个双阴离子和固态的二聚八代形式组成的四代聚集体。计算研究揭示了溶液结构的细节,并提供了高度预测的立体化学模型。
  • MeLi + LiCl in THF: One Heterodimer and No Tetramers
    作者:Baptiste Lecachey、Hassan Oulyadi、Pedro Lameiras、Anne Harrison-Marchand、Hélène Gérard、Jacques Maddaluno
    DOI:10.1021/jo101282m
    日期:2010.9.3
    The structure of the aggregates formed when mixing methyllithium and lithium chloride in THF has been studied by multinuclear magnetic resonance at 170 K. The data suggest that only one new entity is observed, that is the dimer [(MeLi)(LiCl)], in equilibrium (K ≈ 0.6) with [MeLi]4 and [LiCl]2. NMR diffusion measurements lead to the conclusion that this dimer is trisolvated in THF at 170 K, a solvation
    通过在170 K下的多核磁共振研究了将甲基锂氯化锂在THF中混合时形成的聚集体的结构。数据表明,仅观察到一个新的实体,即二聚体[(MeLi)(LiCl)]。平衡(ķ ≈0.6)与[的MeLi] 4和[氯化锂] 2。NMR扩散测量得出的结论是,该二聚体在170 K的THF中被三溶剂化,这是一种溶剂化方案,与DFT计算一致。
  • Enantioselective Alkylation of 2-Alkylpyridines Controlled by Organolithium Aggregation
    作者:Joshua J. Gladfelder、Santanu Ghosh、Maša Podunavac、Andrew W. Cook、Yun Ma、Ryan A. Woltornist、Ivan Keresztes、Trevor W. Hayton、David B. Collum、Armen Zakarian
    DOI:10.1021/jacs.9b08659
    日期:2019.9.25
    pyridines provides access to chiral pyridines via an opera- tionally simple protocol that obviates the need for prefunc- tionalization or preactivation of the substrate. The alkylation is accomplished using chiral lithium amides as non-covalent stereodirecting auxiliaries. Crystallographic and solution NMR studies provide insight into the structure of well- defined chiral aggregates in which a lithium
    2-烷基吡啶的直接对映选择性α-烷基化通过操作简单的方案提供了获得手性吡啶的途径,无需对底物进行预官能化或预活化。使用手性基化作为非共价立体定向助剂完成烷基化。晶体学和溶液 NMR 研究提供了对明确定义的手性聚集体结构的洞察,其中试剂引导不对称烷基化。
  • <sup>6</sup>Li Diffusion-Ordered NMR Spectroscopy (DOSY) and Applications to Organometallic Complexes
    作者:Gerald Kagan、Weibin Li、Russell Hopson、Paul G. Williard
    DOI:10.1021/ol902713h
    日期:2010.2.5
    The development of 6Li diffusion-ordered NMR spectroscopy (DOSY) is reported. This technique is applied to 6Li organometallic complexes. 6Li DOSY provides a facile means of identification of peaks in the 6Li spectrum, as well as evidence of mixed aggregates based on relative diffusion coefficients. 6Li data is correlated to 1H diffusion experiments through 6Li1H} HOESY and/or 1H6Li} HMBC experiments
    报道了6 Li扩散有序NMR光谱学(DOSY)的发展。这项技术适用于6 Li有机属配合物。6 Li DOSY提供了一种简便的方法来鉴定6 Li光谱中的峰,以及基于相对扩散系数的混合聚集体证据。通过6 Li 1 H} HOESY和/或1 H 6 Li} HMBC实验将6 Li数据与1 H扩散实验相关联,以获得Li聚集体的配方重量信息。
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