1,3,5-tris(2-aminoethyl)-2,4,6-trimethylbenzene | 922733-78-6

• 英文名称: 1,3,5-tris(2-aminoethyl)-2,4,6-trimethylbenzene
• CAS: 922733-78-6
• 化学式: C₁₅H₂₇N₃
• 分子量: 249.399
• InChiKey: IIQPBTSCEPUTAF-UHFFFAOYSA-N

物化性质

• 熔点：
  109-111 °C
• 沸点：
  413.1±40.0 °C(Predicted)
• 密度：
  1.006±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.12
• 重原子数：
  18.0
• 可旋转键数：
  6.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  78.06
• 氢给体数：
  3.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  1,3,5-tris(2-aminoethyl)-2,4,6-trimethylbenzene 、 1,1-双(二乙氧基磷酰基)乙烯 以 N,N-二甲基甲酰胺 为溶剂， 反应 48.0h， 生成
  参考文献：
  名称：

  Bisphosphonate sequestering agents. Synthesis and preliminary evaluation for in vitro and in vivo uranium(VI) chelation

  摘要：

  A library of bisphosphonate-based ligands was prepared using solution-phase parallel synthesis and tested for its uranium-binding properties. With the help of a screening method, based on a chromophoric complex displacement procedure, 23 dipodal and tripodal chelates bearing bisphosphonate chelating functions were found to display very high affinity for the uranyl ion and were selected for evaluation of their in vivo uranyl-removal efficacy. Among them, 11 ligands induced a huge modification of the uranyl biodistribution by deviating the metal from kidney and bones to liver. Among the other ligands, the most potent was the dipodal bisphosphonate 3C which reduced the retention of uranyl and increased its excretion by around 10% of the injected metal. (C) 2008 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2008.01.018
• 作为产物：
  描述：

  2,4,6-三溴甲基三甲基苯 在 lithium aluminium tetrahydride 、 三氯化铝 作用下， 以 四氢呋喃 、 二甲基亚砜 为溶剂， 反应 32.0h， 生成 1,3,5-tris(2-aminoethyl)-2,4,6-trimethylbenzene
  参考文献：
  名称：

  高苄基三足硫脲衍生物的合成及阴离子选择性络合

  摘要：

  Cryptand 型和三脚架型硫脲衍生物 4b 和 5a-d 在高苄基位置具有结合功能，它们被合成为可能的阴离子中性受体，期望三个结合位点协同工作以选择性结合阴离子。1H NMR 光谱监测 cryptand 4b 与 CH3CO2–、Cl– 和 F– 在 CDCl2CDCl2 中在 100 °C 的滴定表明结合常数比三足硫脲 5a 小得多，这可能是由于存在强分子内氢4b 中的粘合。三足受体 5a-d 与 H2PO4-、CH3CO2-、Cl- 和 Br- 阴离子的络合常数通过 1H NMR 和/或 UV/Vis 光谱分析在 DMSO 中滴定进行评估。虽然三足受体 5a,b 以 1:1 的化学计量与磷酸根阴离子络合，它们的结合常数没有简单的参考化合物 14 大，可能是因为结合位点周围的空间位阻和协同结合的大熵成本。受体 5c 以 1:2 的化学计量与 H2PO4– 和 CH3CO2– 复合，而

  DOI：

  10.1002/ejoc.200600647

文献信息

• Tripodal (N-alkylated) CMP(O) and malonamide ligands: synthesis, extraction of metal ions, and potentiometric studies
  作者：Dominik Jańczewski、David N. Reinhoudt、Willem Verboom、Elżbieta Malinowska、Mariusz Pietrzak、Clément Hill、Cécile Allignol

  DOI：10.1039/b613254e

  日期：——

  Tripodal ligands build on the C-pivot (9b–e, 13b–d, and 17a–d) and trialkylbenzene platforms (10a,b, 11, 12, 14a,b, and 18a,b) bearing (N-alkylated) carbamoylmethylphosphine oxide (CMPO), carbamoylmethylphosphonate (CMP), and malonamide moieties were synthesized. Extraction studies with Am3+ and Am3+ show that in general there is a positive influence of the N-alkyl substituents in C-pivot CMP(O) ligands on the D (distribution) coefficients. The trialkylbenzene CMPO ligands 10a,b, 11, and 12 have considerably larger D coefficients than the corresponding C-pivot analogues 9a–e, although hardly having any selectivity, while N-alkylation gives rise to smaller D coefficients. Although less effective the extraction behavior of the C-pivot CMP analogues 13b–d shows more or less the same trend as the corresponding CMPO ligands 9b–e upon substitution of the carboxamide N-atom with different alkyl chains. The different malonamide ligands 17a–d and 18a,b are bad extractants, while N-alkylation makes them even worse. Potentiometric studies of CMP(O) and malonamide ligands in polymeric membranes on Pb2+, Cu2+, Ca2+, Mg2+, Na+, and K+ salts revealed that N-alkyl substituents increase the stability constants of ion–ionophore complexes compared to unsubstituted ligands. In polymeric membrane electrodes the ligands induce a selectivity pattern that differs significantly from the so-called Hofmeister series, giving the highest selectivity coefficients for UO22+ among all examined cations (Pb2+, Cu2+, Ca2+, Mg2+, Na+, K+).

  以C-轴(9b–e, 13b–d 和 17a–d)和三烷基苯平台(10a,b, 11, 12, 14a,b 和 18a,b)为基础的承载(N-烷基化)氨甲酰甲基膦氧化物(CMPO)、氨甲酰甲基膦酸酯(CMP)和丙二酰胺部分的三角支架配体已被合成。与Am3+和Am3+的萃取研究表明,通常N-烷基取代基对C-轴CMP(O)配体的D(分布)系数有正向影响。三烷基苯CMPO配体10a,b, 11和12的D系数远大于相应的C-轴类似物9a–e,尽管几乎没有任何选择性,而N-烷基化导致D系数更小。尽管效果较差,C-轴CMP类似物13b–d的萃取行为在将羧酰胺N-原子替换为不同烷基链时或多或少显示出与相应CMPO配体9b–e相同的趋势。不同的丙二酰胺配体17a–d和18a,b是糟糕的萃取剂,而N-烷基化使它们更糟糕。对CMP(O)和丙二酰胺配体在聚合物膜中对Pb2+、Cu2+、Ca2+、Mg2+、Na+和K+盐的电位研究揭示,与未取代的配体相比,N-烷基取代基增加了离子-离子载体复合物的稳定常数。在聚合物膜电极中,配体诱导的选择性模式与所谓的Hofmeister系列显著不同,使得在所有检测的阳离子(Pb2+、Cu2+、Ca2+、Mg2+、Na+、K+)中,UO22+的选择性系数最高。
• Tripodal diglycolamides as highly efficient extractants for f-elements
  作者：Dominik Jańczewski、David N. Reinhoudt、Willem Verboom、Clément Hill、Cécile Allignol、Marie-Thérèse Duchesne

  DOI：10.1039/b715671e

  日期：——

  A series of new ligands bearing three diglycolamide functions preorganized at the C-pivot and trialkylphenyl platforms was synthesized. They are very efficient extractants for Am3+ and Eu3+ with an up to five times relative extraction ability for Eu3+. The distribution coefficients are up to 1000 times increased upon alkylation or arylation of the N-position of the diglycolamide moieties. The tripodal diglycolamides show a 1 : 1 metal to ligand stoichiometry as proven with three independent methods for the complexation of the 3-pentyl N-substituted diglycolamide ligand with Eu3+ (K = 2.5 × 105 M−1 in acetonitrile–water). A cage-like cryptand, containing three diglycolamide units, was prepared using a Eu3+ templated synthesis. However, it does not exhibit improved extraction properties.

  合成了一系列新型配体，这些配体在C轴和三烷基苯平台上预先排列了三个二甘醇酰胺功能单元。它们对Am3+和Eu3+具有非常高效的萃取能力，对Eu3+的相对萃取能力可提高至五倍。通过二甘醇酰胺部分的N位烷基化或芳基化，分配系数可提高一千倍。三脚架型的二甘醇酰胺显示了1：1的金属与配体化学计量关系，通过三种独立的方法证实了3-戊基N-取代二甘醇酰胺配体与Eu3+的络合（在乙腈-水中，K = 2.5 × 105 M−1）。利用Eu3+模板合成法，制备了一种类似笼状的隐肽，内含三个二甘醇酰胺单元。然而，它并未展现出更优的萃取性能。