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苯并-21-冠-7 | 67950-78-1

中文名称
苯并-21-冠-7
中文别名
——
英文名称
benzo-21-crown-7
英文别名
B21C7;2,5,8,11,14,17,20-heptaoxabicyclo[19.4.0]pentacosa-1(25),21,23-triene
苯并-21-冠-7化学式
CAS
67950-78-1
化学式
C18H28O7
mdl
——
分子量
356.416
InChiKey
DZWYQRMUCPSDQK-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

物化性质

  • 熔点:
    134-135 °C
  • 沸点:
    500.6±50.0 °C(Predicted)
  • 密度:
    1.049±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    0.6
  • 重原子数:
    25
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.67
  • 拓扑面积:
    64.6
  • 氢给体数:
    0
  • 氢受体数:
    7

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量
  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    描述:
    苯并-21-冠-7吡啶铁粉 作用下, 以 二氯甲烷N,N-二甲基甲酰胺 为溶剂, 反应 36.0h, 生成 4,5-dicyanobenzo-21-crown-7
    参考文献:
    名称:
    含酞菁和冠醚亚基的宿主的合成及聚集行为
    摘要:
    描述了四种新的有机主体,它们包含一个酞菁核,四个冠醚环连接到该核上。这些主体包括具有 18-crown-6 环的游离碱酞菁和具有 15-crown-5、18-crown-6 和 21-crown-7 环的三种铜酞菁。大环化合物是由苯并冠醚分三步合成的。在溶液中,酞菁倾向于形成聚集体。这种聚集受溶剂极性和碱金属盐存在的影响,这些盐与冠部配位。直径与冠醚环直径相匹配的阳离子与新宿主形成 4:4 的主客体复合物。当阳离子的直径超过冠醚环的直径时,形成主客体化学计量比为 8:4 的配合物。提出了铜酞菁主体的结合自由能,并与苯并冠醚的结合自由能进行了比较。结合图谱支持 UV-vis 实验的结果;即,大阳离子引起大环的聚集。自 20 年前佩德森发现冠醚 1 以来,已经发表了数百篇关于这些化合物化学的论文。 2 关于酞菁和相关大环的论文数量甚至更多。 3 直到最近,还没有任何论文已经发表了描述包含两种类型环系统的宿主。
    DOI:
    10.1021/ja00248a021
  • 作为产物:
    参考文献:
    名称:
    Ring-closure reactions. 19. Kinetics of formation of benzo-crown ethers by intramolecular nucleophilic substitution. A comparison between polyoxyethylene and polymethylene chains
    摘要:
    DOI:
    10.1021/ja00404a027
  • 作为试剂:
    描述:
    二苯并-24-冠醚-8 、 9-methyl(aminobenzyl)anthracene hexafluorophosphate salt 在 苯并-21-冠-7 作用下, 以 二氯甲烷乙腈 为溶剂, 反应 0.01h, 生成 、
    参考文献:
    名称:
    Monitoring Self-Sorting by Electrospray Ionization Mass Spectrometry: Formation Intermediates and Error-Correction during the Self-Assembly of Multiply Threaded Pseudorotaxanes
    摘要:
    Three binary pseudorotaxanes, which are based on two different secondary ammonium/crown ether binding motifs, have been studied by H-1 NMR and H-1,H-1 EXSY NMR experiments with respect to their thermodynamic stabilities and their axle exchange kinetics. The stability ranking does not follow the order of axle exchange rates, and the thermodynamically most stable axle-wheel combinations assemble only slowly On the basis of these binding motifs, a series of self-sorting systems have been studied ranging from simple four-component mixtures through sequence-specific pseudorotaxanes to multiply threaded complexes Because of the mismatch of kinetic and thermodynamic order, wrongly assembled structures are unavoidable, which require error-correction steps to yield the final thermodynamically controlled self-sorted products. These error-correction steps can easily be monitored by electrospray mass spectrometry, when a mixed-flow microreactor is coupled to the ion source to cover second time scales Self-assembly intermediates, wrongly assembled structures, and the final thermodynamic products can be simultaneously identified The determination of preferred assembly pathways as well as the formation of dead-end structures provides a clear picture of a rich kinetic behavior of the self-sorting systems under study
    DOI:
    10.1021/ja9101369
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文献信息

  • [EN] LASSO STRUCTURES AND THEIR SYNTHESIS<br/>[FR] STRUCTURES DE TYPE LASSO ET LEUR SYNTHÈSE
    申请人:CHROMACON AG
    公开号:WO2018091339A1
    公开(公告)日:2018-05-24
    Method for the synthesis of a molecular lasso structure consisting of a cyclic moiety and of a linear moiety, wherein the linear moiety is covalently attached to the cyclic moiety and with its free end is partially threaded through the orifice formed by the cyclic moiety, including the following steps, preferably in given order: ) provision of a cyclic moiety and of a first linear structural element and establishing conditions in which at least a fraction of the first linear structural element is threaded through the orifice of the cyclic moiety; 2) covalently attaching a stopper element preventing de-threading of the first linear structural element to one terminal end of the first linear structural element; 3) separating unthreaded cyclic moieties and first linear structural elements from threaded molecular assemblies, in which threaded molecular assemblies the first linear structural element with said stopper element is threaded through the cyclic moiety, by chemical and/or physical separation and using essentially only the threaded molecular assemblies for further reaction; 4) reacting the threaded molecular assemblies with a bifunctional second linear structural element so that the second linear structural element is covalently attached to the first linear structural element at or close to its end opposite to the end where the stopper is attached, and so that the second linear structural element is covalently attached to the cyclic moiety.
    合成分子套索结构的方法,包括一个环状部分和一个线性部分,其中线性部分与环状部分共价连接,并且其自由端部分部分穿过环状部分形成的孔,包括以下步骤,最好按照给定的顺序进行:1)提供一个环状部分和一个第一线性结构元素,并建立条件,使第一线性结构元素的至少一部分穿过环状部分的孔;2)将阻止解开第一线性结构元素的阻塞元素共价连接到第一线性结构元素的一个末端;3)通过化学和/或物理分离,将未穿过的环状部分和第一线性结构元素与穿过的分子组装体分离开来,并且仅使用穿过的分子组装体进行进一步反应;4)将穿过的分子组装体与双功能第二线性结构元素反应,使第二线性结构元素共价连接到第一线性结构元素的末端或接近末端,其中阻塞元素连接的另一端,并且使第二线性结构元素共价连接到环状部分。
  • Synthesis and properties of crown ether-modified phosphines and their use as ligands in transition metal catalysts
    作者:Tamon Okano、Masahiro Iwahara、Hisatoshi Konishi、Jitsuo Kiji
    DOI:10.1016/0022-328x(88)80123-2
    日期:1988.5
    palladium and rhodium catalysis. The catalytic activities correlated well with the extractabilities of the phosphine ligands. The compound [RhCl(cod)]2, combined with IIIc and IIId, shows high activities toward catalytic hydrogenation of potassium and caesium cinnamates, respectively. Replacement of allyl bromide with powdered sodium or potassium iodide in benzene to give allyl iodide are catalyzed by
    一系列冠醚改性的三芳基膦,1,2-二苯基膦基-2,3,5,6,8,9-六氢-1,4,7,10-苯并四氧杂环丁环素(IIIa)及其更高的同系物(III)(据报道,常见的命名法是3 n-二苯基膦基苯并[3 n-冠-n ]醚(n = 4、5、6和7)。评估了提取碱金属苦味酸盐的热力学参数。膦III(n = 5和6)与na +和K +形成1:1化学计量的冠状配合物。观察到的可萃取性与腔尺寸选择性的概念非常吻合。热力学参数Δ ħ °和Ť Δ小号dgC时萃取络合的°分别为-63至-58 kJ / mol和-41至-35 kJ / mol,因此ΔG °由焓项控制。这些膦作为均相钯和铑催化的辅助配体应用于液相-液相或液相-固相​​反应。催化活性与膦配体的可萃取性密切相关。化合物[RhCl(cod)] 2与IIIc和IIId结合,分别对肉桂酸钾和肉桂酸铯的催化加氢表现出高活性。烯丙基溴与粉状碘化钠或碘化钾的
  • Thermodynamic and electrochemical study of tailor-made crown ethers for redox-switchable (pseudo)rotaxanes
    作者:Henrik Hupatz、Marius Gaedke、Hendrik V Schröder、Julia Beerhues、Arto Valkonen、Fabian Klautzsch、Sebastian Müller、Felix Witte、Kari Rissanen、Biprajit Sarkar、Christoph A Schalley
    DOI:10.3762/bjoc.16.209
    日期:——
    Crown ethers are common building blocks in supramolecular chemistry and are frequently applied as cation sensors or as subunits in synthetic molecular machines. Developing switchable and specifically designed crown ethers enables the implementation of function into molecular assemblies. Seven tailor-made redox-active crown ethers incorporating tetrathiafulvalene (TTF) or naphthalene diimide (NDI) as
    冠醚是超分子化学中的常见构建基块,经常用作阳离子传感器或合成分子机器中的亚基。开发可转换的和专门设计的冠醚可以将功能实现到分子组装中。描述了七种量身定制的氧化还原活性冠醚,它们结合了四硫富瓦烯(TTF)或萘二酰亚胺(NDI)作为氧化还原可转换的构建基块,具有形成氧化还原可转换的轮烷的潜力。等温滴定量热法和伏安法技术的结合揭示了相应的假轮烷与仲铵离子的结合能与氧化还原转换特性之间的相关性。对于两种不同的弱配位阴离子,发现假轮烷的焓和熵结合贡献之间令人惊讶的关系。这些发现被应用于NDI- [2]轮烷的合成,与相应的游离大环化合物相比,NDI- [2]轮烷保留了相似的光谱电化学性质。对量身定制的冠醚的热力学和电化学性质的详细了解,为构建具有新兴性质的新型分子氧化还原开关奠定了基础。
  • Mechanically Interlocked Vitrimers
    作者:Jun Zhao、Zhaoming Zhang、Lin Cheng、Ruixue Bai、Dong Zhao、Yongming Wang、Wei Yu、Xuzhou Yan
    DOI:10.1021/jacs.1c10427
    日期:2022.1.19
    Mechanically interlocked networks (MINs) have emerged as an encouraging platform for the development of mechanically robust yet adaptive materials. However, the difficulty in reversibly breaking the mechanical bonds poses a real challenge to MINs as customizable and sustainable materials. Herein, we couple the vitrimer chemistry with mechanically interlocked structures to generate a new class of MINs─referred
    机械联锁网络 (MIN) 已成为开发机械稳健但适应性材料的令人鼓舞的平台。然而,可逆地破坏机械键的难度对作为可定制和可持续材料的 MIN 提出了真正的挑战。在这里,我们将 vitrimer 化学与机械互锁结构相结合,以产生一类新的 MIN(称为机械互锁 vitrimer (MIV))来应对挑战。具体来说,我们已经制备了乙酰乙酸酯修饰的 [2] 轮烷,它与两种市售的多胺单体进行无催化剂缩合反应以提供 MIV。与车轮在外力作用下不可滑动的控制相比,3 ) 和阻尼能力 (98% 对 72%)。证明独特特性曲线背后的结构基础是力引起的主客体解离和随之而来的车轮沿轴的分子内滑动。这种特殊的行为代表了一种连续的能量耗散机制,它为主要依赖于牺牲键断裂的其他途径提供了补充。此外,凭借乙烯基聚氨酯的 vitrimer 化学性质,我们赋予 MIN 可再加工性和化学可回收性,从而在不破坏机械键的情况下实现网络的
  • Templated versus non-templated synthesis of benzo-21-crown-7 and the influence of substituents on its complexing properties
    作者:Wei Jiang、Christoph A Schalley
    DOI:10.3762/bjoc.6.14
    日期:——

    Two procedures for the synthesis of benzo-21-crown-7 have been explored. The [1+1] macrocyclization with KBF4 as the template was found to be more efficient than the intramolecular macrocyclization without template. Pseudorotaxanes form with secondary ammonium ions bearing at least one alkyl chain narrow enough to slip into the crown ether. Substitution on benzo-21-crown-7 or on the secondary ammonium axle alters the binding affinity and binding mode. Compared to dibenzo-24-crown-8, the complexing properties of benzo-21-crown-7 turn out to be more susceptible to modifications at the crown periphery.

    已探索了合成苯-21-冠-7的两种方法。发现使用KBF4作为模板的[1+1]大环化比不使用模板的分子内大环化更有效。伪轮烷与至少带有一个足够窄以滑入冠醚的烷基链的次级铵离子形成。对苯-21-冠-7或次级铵轴上的取代会改变结合亲和力和结合方式。与二苯-24-冠-8相比,苯-21-冠-7的络合性质更容易受到冠周边的修饰的影响。
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