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di-tert-butylmagnesium | 14627-81-7

中文名称
——
中文别名
——
英文名称
di-tert-butylmagnesium
英文别名
——
di-tert-butylmagnesium化学式
CAS
14627-81-7
化学式
C8H18Mg
mdl
——
分子量
138.536
InChiKey
XPVATDCOZDHQNL-UHFFFAOYSA-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):
    2.86
  • 重原子数:
    9
  • 可旋转键数:
    0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.75
  • 拓扑面积:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

SDS

SDS:2a94c2c414f38382b2728055674c5ab4
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反应信息

  • 作为反应物:
    描述:
    di-tert-butylmagnesium四氢呋喃 为溶剂, 生成 magnesium,2-methylpropane,bromide
    参考文献:
    名称:
    Allen, Peter E. M.; Hagias, Stan; Mair, Clyde, Berichte der Bunsen-Gesellschaft, 1984, vol. 88, # 7, p. 622 - 626
    摘要:
    DOI:
  • 作为产物:
    描述:
    氯代叔丁烷magnesium 作用下, 以 乙醚 为溶剂, 生成 di-tert-butylmagnesium
    参考文献:
    名称:
    Reactions of dialkylmagnesium-salt mixtures with ketones: increasing the ratio of addition to reduction
    摘要:
    DOI:
    10.1021/jo00297a055
  • 作为试剂:
    描述:
    三甲基氯硅烷4-甲基环己酮di-tert-butylmagnesiumlithium chloride 作用下, 以 四氢呋喃 为溶剂, 反应 1.08h, 以80%的产率得到4-methyl-1-(trimethylsilyloxy)-1-cyclohexene
    参考文献:
    名称:
    二叔丁基镁作为原子效率高的碳中心碱试剂,用于从酮制备甲硅烷基烯醇醚
    摘要:
    已发现二叔丁基镁是一种反应性、非亲核性和非还原性的碳中心碱,用于一系列酮的去质子化。该试剂在用作预制试剂或从母体格氏试剂更易于使用的一锅方案中显示出同样高的反应性,并提供比更传统使用的碱更高的原子效率。
    DOI:
    10.1055/s-2008-1072739
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文献信息

  • Efficient methods for enol phosphate synthesis using carbon-centred magnesium bases
    作者:William J. Kerr、David M. Lindsay、Vipulkumar K. Patel、Muralikrishnan Rajamanickam
    DOI:10.1039/c5ob01849h
    日期:——
    Efficient conversion of ketones into kinetic enol phosphates under mild and accessible conditions has been realised using the developed methods with di-tert-butylmagnesium and bismesitylmagnesium. Optimisation of the quench protocol resulted in high yields of enol phosphates from a range of cyclohexanones and aryl methyl ketones, with tolerance of a range of additional functional units.
    使用已开发的二叔丁基镁和双金属镁的方法,已在温和且易接近的条件下将酮有效地转化为动力学烯醇式磷酸酯。淬灭方案的优化导致从一系列环己酮和芳基甲基酮中获得高收率的烯醇磷酸酯,并具有一定范围的附加功能单元。
  • Hydrometallation of 1-octene with grignard reagents. Alkylmagnesiums and alkylmagnesium hydrides catalyzed by dicyclopentadienyltitanium dichloride
    作者:E.C. Ashby、Richard D. Ainslie
    DOI:10.1016/0022-328x(83)85035-9
    日期:1983.7
    octane (produced on hydrolysis of the product) vs. time was plotted for several reactions in order to compare the effect of individual reagents. Most alkylmagnesium compounds with β hydrogen atoms gave primarily the hydrometallation product, although t-Bu2Mg produced isomerized starting material. MeMgH gives the best yield of octane on hydrolysis of the reaction mixture. A mechanism is proposed which
    通过一系列Grignard试剂(EtMgCl,EtMgBr,n-PrMgCl,i-PrMgCl,n-BuMgCl,sec-BuMgCl,iso-BuMgCl,iso-BuMgBr和iso-BuMgI),二烷基镁化合物(Me 2 Mg,Et 2 Mg,n-Pr 2 Mg,iso-Pr 2 Mg,n-Bu 2 Mg,sec-Bu 2 Mg,iso-Bu 2 Mg和t-Bu 2 Mg),氢化烷基镁(RMgH,其中R = Me,Et,T-Bu,Cp和Ph)和氢化镁(MgH 2,HMgCl和HMgBr)在5 mol%二环戊二烯基二氯化钛(Cp 2 TiCl 2)的四氢呋喃溶液已被研究。绘制了几个反应的辛烷值的百分率(产物水解产生的)与时间的关系图,以比较各个试剂的作用。尽管t-Bu 2 Mg产生了异构化的起始原料,但大多数具有β氢原子的烷基镁化合物主要产生加氢金属化产物。在反应混合物水解时,MeMg
  • Direct synthesis of 4,4-disubstituted N-silyl-1,4-dihydropyridines
    作者:Jan Bräckow、Klaus T. Wanner
    DOI:10.1016/j.tet.2005.11.069
    日期:2006.3
    based on the trapping reaction of 4-substitued N-silylpyridinium ions. When performed with dialkylmagnesium reagents, such as iPr2Mg, silyl protected 4,4-disubstituted 1,4-dihydropyridines were obtained in up to quantitative yields. High 1,4-selectivity was found for sterically demanding nucleophiles, whereas small nucleophiles (Me2Mg) tend to yield 1,2-addition-products. Grignard, dialkylzinc and organocopper
    提出了制备4,4-二取代的1,4-二氢吡啶的空前的方法。它基于4-取代的N-甲硅烷基吡啶鎓离子的捕集反应。当与二烷基镁试剂,如执行我镨2的Mg,甲硅烷基保护4,4-二取代的高达定量的产率得到1,4-二氢吡啶。发现对空间要求高的亲核试剂具有较高的1,4-选择性,而小的亲核试剂(Me 2 Mg)倾向于产生1,2-加成产物。发现格氏试剂,二烷基锌和有机铜试剂没有产生加成产物或产生较差的结果。在HCl存在下,用NaCNBH 3还原获得的1,4-二氢吡啶,然后用二碳酸叔丁酯以高收率提供了相应的N- Boc保护的哌啶。
  • Low coordinate magnesium chemistry supported by a bulky β-diketiminate ligand
    作者:Andrew P. Dove、Vernon C. Gibson、Pimpa Hormnirun、Edward L. Marshall、John A. Segal、Andrew J. P. White、David J. Williams
    DOI:10.1039/b303550f
    日期:——
    A series of magnesium(II) alkyl, alkoxide, carboxylate, amide and halide complexes stabilised by the bulky β-diketiminate ligand, HC(C(Me)N-2,6-iPr2C6H3)2 (BDI), have been synthesised and structurally characterised. (BDI)H reacts with MgMe2 in Et2O to give the four-coordinate complex (BDI)MgCH3(Et2O), 1, and in toluene to afford [(BDI)Mg(μ-CH3)]2, 2. Three coordinate complexes may be accessed by increasing the size of the alkyl ligand; hence, the reaction of (BDI)H with tBu2Mg yields (BDI)MgtBu, 3, while Li(BDI) reacts with iPrMgCl to afford (BDI)MgiPr, 4; a similar reaction with PhMgCl affords the diethyl ether adduct (BDI)MgPh(Et2O), 5. The etherates 1 and 5 may be converted into the base-free complexes, 2 and (BDI)MgPh, 6, respectively, upon heating in vacuo. The direct reaction of (BDI)H with RMgX (X = Cl or Br) results in relatively inert halide-bridged dimers of formula [(BDI)Mg(μ-X)]2, (X = Cl, 7; X = Br, 8). The alkylmagnesium derivatives react readily with alcohols, amines or carboxylic acids to yield alkoxide, amide and carboxylate complexes, respectively. For example, 4 reacts with iPrOH (or O2) to form [(BDI)Mg(μ-OiPr)]2, 9. Convenient one-pot synthetic procedures have been developed using commercially available Bu2Mg. Treatment of Bu2Mg with (BDI)H, followed by its reaction with MeOH, tBuOH, iPr2NH, (Me3Si)2NH, MeCO2H or PhCO2H affords [(BDI)Mg(μ-OMe)]2, 10, [(BDI)Mg(μ-OtBu)]2, 11, (BDI)Mg(NiPr2), 12, (BDI)Mg(NTMS2), 13, [(BDI)Mg(μ-O2CMe])]2, 14, and [(BDI)Mg(μ-O2CPh)]2, 15, respectively. The molecular structures of complexes 4–8 and 12–15 are reported.
    一系列由庞大β-二酮亚胺配体HC(C(Me)N-2,6-iPr2C6H3)2(BDI)稳定的镁(II)烷基、烷氧化物、羧酸盐、氨基和卤化物配合物已被合成并结构表征。(BHDI)与MgMe2在Et2O中反应得到四配位的配合物(BHDI)MgCH3(Et2O),1,在甲苯中得到[(BHDI)Mg(μ-CH3)]2,2。通过增大烷基配体的大小可以获得三配位配合物;因此,(BHDI)H与tBu2Mg反应生成(BHDI)MgtBu,3,而Li(BHDI)与iPrMgCl反应得到(BHDI)MgiPr,4;类似的反应与PhMgCl生成二乙醚加合物(BHDI)MgPh(Et2O),5。醚合物1和5在真空加热下分别转化为无碱配合物2和(BHDI)MgPh,6。(BHDI)H与RMgX(X = Cl或Br)的直接反应生成相对惰性的卤素桥联二聚体,分子式为[(BHDI)Mg(μ-X)]2,(X = Cl,7;X = Br,8)。烷基镁衍生物易于与醇、胺或羧酸反应,分别生成烷氧化物、氨基和羧酸盐配合物。例如,4与iPrOH(或O2)反应生成[(BHDI)Mg(μ-OiPr)]2,9。采用商业上可获得的Bu2Mg,开发了方便的一锅合成程序。Bu2Mg与(BHDI)H反应,随后与MeOH、tBuOH、iPr2NH、(Me3Si)2NH、MeCO2H或PhCO2H反应,分别得到[(BHDI)Mg(μ-OMe)]2,10,[(BHDI)Mg(μ-OtBu)]2,11,(BHDI)Mg(NiPr2),12,(BHDI)Mg(NTMS2),13,[(BHDI)Mg
  • Regioselective and Transition-Metal-Free Addition of tert-Butyl Magnesium Reagents to Pyridine Derivatives: A Convenient Method for the Synthesis of 3-Substituted 4-tert-Butylpyridine Derivatives
    作者:Sebastian Rappenglück、Karin Niessen、Thomas Seeger、Franz Worek、Horst Thiermann、Klaus Wanner
    DOI:10.1055/s-0036-1589025
    日期:2017.9
    4-disubstituted pyridine derivatives with a tert-butyl group in the 4-position were synthesized in a transition-metal-free, two-step reaction sequence from 3-substituted pyridine precursors. Highly regioselective addition of t-Bu2Mg to TIPS-activated pyridines and an efficient microwave-assisted aromatization with sulfur as oxidant afforded the desired 3,4-disubstituted pyridine derivatives in moderate to excellent
    摘要 由3-取代的吡啶前体在无过渡金属的两步反应序列中合成了多种在4-位具有叔丁基的3,4-二取代的吡啶衍生物。在TIPS活化的吡啶中高区域选择性地添加t- Bu 2 Mg,并以硫作为氧化剂进行有效的微波辅助芳构化,以中等至极好的收率得到了所需的3,4-二取代的吡啶衍生物。该方法与3-位上存在的许多官能团如酯,酰胺,卤化物,腈或炔基兼容。 由3-取代的吡啶前体在无过渡金属的两步反应序列中合成了多种在4-位具有叔丁基的3,4-二取代的吡啶衍生物。在TIPS活化的吡啶中高区域选择性地添加t- Bu 2 Mg,并以硫作为氧化剂进行有效的微波辅助芳构化,以中等至极好的收率得到了所需的3,4-二取代的吡啶衍生物。该方法与3-位上存在的许多官能团如酯,酰胺,卤化物,腈或炔基兼容。
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