5-nitro-2-octyloxybenzoic acid methyl ester | 267897-49-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5-nitro-2-octyloxybenzoic acid methyl ester
• 英文别名: methyl 2-(octyloxy)-5-nitrobenzoate；2-octyloxy-5-nitro-benzoic acid methyl ester；Methyl 5-nitro-2-octoxybenzoate
• CAS: 267897-49-4
• 化学式: C₁₆H₂₃NO₅
• 分子量: 309.362
• InChiKey: VMLGULCRNWBTSO-UHFFFAOYSA-N

物化性质

• 沸点：
  435.2±25.0 °C(Predicted)
• 密度：
  1.109±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  22
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  81.4
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  5-nitro-2-octyloxybenzoic acid methyl ester 在 palladium on activated charcoal sodium hydroxide 、 氢气 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 60.0h， 生成 (2-octyloxy-5-undec-10-enoylaminobenzoylamino)acetic acid ethyl ester
  参考文献：
  名称：

  使用拟肽 β-片层模块进行定义明确的仿生模块化多域聚合物的合成和单分子研究

  摘要：

  为了追求兼具强度、韧性和弹性的先进生物材料，人们合成了一类新的定义明确的模块化聚合物，并使用原子力显微镜研究了它们的纳米力学性能。这些聚合物基于基于拟肽β-折叠的双闭环 (DCL) 模块，该模块旨在克服我们之前报道的模块化聚合物的局限性 (J. Am. Chem. Soc. 2004, 126, 2059) . 单分子力扩展实验表明，随着聚合物被拉伸，这些模块会依次展开，从而产生更规则的锯齿状曲线，类似于在肌动蛋白和其他生物聚合物中看到的曲线。单分子数据与计算机建模非常吻合，

  DOI：

  10.1021/ja0448871
• 作为产物：
  描述：

  2-(辛基氧基)苯甲酸甲酯 在 硫酸 作用下， 反应 1.5h， 以70%的产率得到5-nitro-2-octyloxybenzoic acid methyl ester
  参考文献：
  名称：

  高度稳定的六氢键分子双链体

  摘要：

  本文描述了氢键分子双链体 (3·4) 的设计、合成和表征。发现分别具有互补氢键序列 ADAADA 和 DADDAD 的两条寡酰胺分子链 3 和 4 形成极其稳定的 (Ka = (1.3 ± 0.7) × 109 M-1) 分子双链体 (3·4)在氯仿中。来自 1D 和 2D 1H NMR 光谱、等温滴定量热法和薄层色谱的证据证实了双链体的形成和高稳定性。众多氢键和范德华相互作用之间的正协同作用以及分子内氢键对单个链的预组织可以解释这种特殊的稳定性。这种设计为具有可编程特异性和稳定性的超分子识别单元开辟了一条新途径。

  DOI：

  10.1021/ja9942742

文献信息

• A Noncovalent Approach to Antiparallel β-Sheet Formation
  作者：Huaqiang Zeng、Xiaowu Yang、Robert A. Flowers、Bing Gong

  DOI：10.1021/ja010701b

  日期：2002.3.1

  Four tripeptide chains, when attached to the same end of a hydrogen-bonded duplex (1.2) with the unsymmetrical, complementary sequences of ADAA/DADD, have been brought into proximity, leading to the formation of four hybrid duplexes, 1a.2a, 1a.2b, 1b.2a, and 1b.2b, each of which contains a two-stranded beta-sheet segment. The extended conformations of the peptide chains were confirmed by 1D and 2D NMR. The peptide strands stay registered through hydrogen bonding and the beta-sheets are stabilized by side chain interactions. Two-dimensional NMR data also indicate that the duplex template prevents further aggregation in the peptide segment. When the peptide chains are attached to the two different termini of the duplex template, NMR studies show the presence of a mixture with no clearly defined conformations. In the absence of the duplex template, the tripeptides are found to associate randomly. Finally, isothermal titration calorimetry studies revealed that the hybrid duplex 1a.2a was more stable than either the duplex template or the peptides alone.
• Noncovalent Synthesis of Shape-Persistent Cyclic Hexamers from Ditopic Hydrazide-Based Supramolecular Synthons and Asymmetric Induction of Supramolecular Chirality
  作者：Yong Yang、Min Xue、Jun-Feng Xiang、Chuan-Feng Chen

  DOI：10.1021/ja9029335

  日期：2009.9.9

  With properly encoded recognition sites and a well-defined algorithm for intermolecular and intramolecular interactions, the 120 degrees spacer linked ditopic hydrazide-based supramolecular synthons were found to self-assemble into shape-persistent cyclic hexamers in apolar solvents. The two hydrazide motifs displayed separate sets of signals in the NMR spectra because of the interlocked conformation. While in hydrogen bonding competitive solvent such as DMSO-d(6) the spectra were in agreement with the structures with C-2 axes Moreover, the terminative groups were found to affect the stability of the assemblies substantially. Consequently, the monomer with ureido-hydrazide terminative groups could form the most stable cyclic hexamer in solution for the attractive spectator secondary electrostatic interactions. Owing to the dynamically and kinetically stable nature of these kinds of assemblies, the assembly from the monomer with chiral auxiliary terminative groups also displayed supramolecular chirality in solution, which was confirmed by concentration-dependent CD spectra.
• Oligoamide Duplexes as Organogelators
  作者：Ruikai Cao、Jingjing Zhou、Wei Wang、Wen Feng、Xianghui Li、Penghui Zhang、Pengchi Deng、Lihua Yuan、Bing Gong

  DOI：10.1021/ol100953e

  日期：2010.7.2

  Oligoamide duplexes carrying multiple alkyl side chains were found to serve as gelators for aromatic solvents. The double-stranded backbone was essential for the hierarchical self-assembly of the molecular duplex into fibers of high aspect ratios. The demonstrated gelating abilities may be extended to a large family of analogous H-bonded duplexes having different H-bonding sequences, leading to a unique platform for developing a diverse variety of potential gelators based on a supramolecular and/or a dynamic covalent approach.
• Interplay of Olefin Metathesis and Multiple Hydrogen Bonding Interactions: Covalently Cross-linked Zippers
  作者：Jisen Zeng、Wei Wang、Pengchi Deng、Wen Feng、Jingjing Zhou、Yuanyou Yang、Lihua Yuan、Kazuhiro Yamato、Bing Gong

  DOI：10.1021/ol201282d

  日期：2011.8.5

  Hydrogen-bonded zippers bearing terminal alkene groups were treated with Grubbs' catalyst, leading to covalently cross-linked zippers without violating H-bonding sequence specificity. The yield of a cross-linked zipper depended on the stability of its H-bonded precursor, with a weakly associating pair giving reasonable yields only at high concentrations while strongly associating pairs showed nearly quantitative yields. The Integration of thermodynamic (H-bonding) and kinetic (irreversible C=C bond formation) processes suggests the possibility of developing many different covalent association units for constructing molecular structures based on a self-assembling way.