4,5-Difluoro-2-nitrophenyl azide | 216254-45-4

• 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: 4,5-Difluoro-2-nitrophenyl azide
• 英文别名: 4,5-difluoro-2-nitrophenylazide；2-nitro-4,5-difluorphenylazide；2-Nitro-4,5-difluorophenyl azide；1-azido-4,5-difluoro-2-nitrobenzene
• CAS: 216254-45-4
• 化学式: C₆H₂F₂N₄O₂
• 分子量: 200.104
• InChiKey: XGGBYWHCZQRGGH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  60.2
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  4,5-Difluoro-2-nitrophenyl azide 以 溶剂黄146 为溶剂， 反应 6.0h， 以40%的产率得到5,6-二氟苯并[c][1,2,5]噁二唑1-氧化物
  参考文献：
  名称：

  通过苯胺的氧化和芳基叠氮化物的热环化合成新型氟苯并呋喃

  摘要：

  提出了通过氟苯胺的氧化和氟芳基叠氮化物的热环化反应合成几种氟苯并呋喃的方法。NMR数据证明，本研究中制备的氟苯并呋喃具有互变异构现象。苯并呋喃恶烷一般具有生物活性，是用于制备具有重要药学应用的几种化合物的合成中间体。

  DOI：

  10.1016/s0022-1139(03)00011-3
• 作为产物：
  描述：

  3’,4’-二氟乙酰苯胺 在 硫酸 sodium azide 、 硝酸 、 三氟乙酸 、 sodium nitrite 作用下， 以 溶剂黄146 为溶剂， 反应 6.0h， 生成 4,5-Difluoro-2-nitrophenyl azide
  参考文献：
  名称：

  通过苯胺的氧化和芳基叠氮化物的热环化合成新型氟苯并呋喃

  摘要：

  提出了通过氟苯胺的氧化和氟芳基叠氮化物的热环化反应合成几种氟苯并呋喃的方法。NMR数据证明，本研究中制备的氟苯并呋喃具有互变异构现象。苯并呋喃恶烷一般具有生物活性，是用于制备具有重要药学应用的几种化合物的合成中间体。

  DOI：

  10.1016/s0022-1139(03)00011-3

文献信息

• Hypoxia-Selective Agents Derived from Quinoxaline 1,4-Di-N-oxides
  作者：Antonio Monge、Juan A. Palop、Adela Lopez de Cerain、Virginia Senador、Francisco J. Martinez、Yolanda Sainz、Susana Narro、Estrella Garcia、Carlos de Miguel

  DOI：10.1021/jm00010a023

  日期：1995.5

  Hypoxic cells, which are a common feature of solid tumors, but not normal tissues, are resistant to both anticancer drugs and radiation therapy. Thus the identification of drugs with selective toxicity toward hypoxic cells is an important objective in anticancer chemotherapy. The benzotriazine di-N-oxide (SR 4233, Tirapazamine) has been shown to be an efficient and selective cytotoxin for hypoxic cells. Since the bioreductive activation of Tirapazamine is thought to be due to the presence of the 1,4-di-N-oxide moiety, a series of 3-aminoquinoxaline-2-carbonitrile 1,4-di-N-oxides with a range of electron-donating and -withdrawing substituents in the 6- and/or 7- positions has been synthesized and evaluated for toxicity to hypoxic cells. Electrochemical studies of the quinoxaline di-N-oxides and Tirapazamine showed that as the electron-withdrawing nature of the 6(7)-substituent increases, the reduction potential becomes more positive and the compound is more readily reduced. Apart from the unsubstituted 6a and the 6,7-dimethyl derivative 6c, the quinoxaline di-N-oxides have reduction potentials significantly more positive than Tirapazamine (E(pc)-0.90 V). The most potent cytotoxins to cells in culture were the 6,7,-dichloro and 6,7-difluoro derivatives 6i and 6l, which were 30-fold more potent than Tirapazamine. The 6(7)-fluoro and 6(7)-chloro compounds, 6e and 6h, showed the greatest hypoxia selectivity. Four of the compounds, 6e, 6f, 6h and 6i, killed the inner cells of multicellular tumor spheroids in vitro. In vivo Balb/c mice tolerated a dose of these four compounds twice the size of that of Tirapazamine. This study demonstrates that quinoxaline 1,4-di-N-oxides could provide useful hypoxia-selective therapeutic agents.
• Kotovskaya; Charushin; Chupakhin, Russian Journal of Organic Chemistry, 1998, vol. 34, # 3, p. 369 - 374
  作者：Kotovskaya、Charushin、Chupakhin、Kozhevnikova

  DOI：——

  日期：——
• 5(6)-Fluoro-6(5)-R-benzofuroxans: synthesis and NMR , and studies
  作者：S.K Kotovskaya、S.A Romanova、V.N Charushin、M.I Kodess、O.N Chupakhin

  DOI：10.1016/j.jfluchem.2003.11.011

  日期：2004.3

  5(6)-Fluoro-6(5)-substituted benzofuroxans were obtained by the reactions of 5,6-difluorobenzofuroxan with a number of nucleophiles, such as alkylamines, cycloalkylimines, sodium azide and sodium alkoxides. The features of tautomerism in the series of asymmetrical 5(6)-fluorobenzofuroxans in acetone solutions have been studied by H-1, C-13 and F-19 NMR. (C) 2003 Elsevier B.V. All rights reserved.
• Synthesis of novel fluorobenzofuroxans by oxidation of anilines and thermal cyclization of arylazides
  作者：Socorro Leyva、Vı́ctor Castanedo、Elisa Leyva

  DOI：10.1016/s0022-1139(03)00011-3

  日期：2003.6

  The synthesis of several fluorobenzofuroxans by oxidation of fluoroanilines and thermal cyclization of fluoroarylazides is presented. The fluorobenzofuroxans prepared in this study presented tautomerism as evidenced by their NMR data. Benzofuroxans in general have biological activity and are synthetic intermediates for the preparation of several compounds with important pharmaceutical applications

  提出了通过氟苯胺的氧化和氟芳基叠氮化物的热环化反应合成几种氟苯并呋喃的方法。NMR数据证明，本研究中制备的氟苯并呋喃具有互变异构现象。苯并呋喃恶烷一般具有生物活性，是用于制备具有重要药学应用的几种化合物的合成中间体。
• Radical Chemistry and Cytotoxicity of Bioreductive 3-Substituted Quinoxaline Di-<i>N</i>-Oxides
  作者：Robert F. Anderson、Pooja Yadav、Sujata S. Shinde、Cho R. Hong、Susan M. Pullen、Jóhannes Reynisson、William R. Wilson、Michael P. Hay

  DOI：10.1021/acs.chemrestox.6b00133

  日期：2016.8.15

  oxidizing radicals, capable of H atom abstraction from methyl groups. The kinetics of formation and decay of the radicals produced following one-electron reduction of the parent compounds, both in oxic and anoxic solutions, were determined using pulse radiolysis. Back oxidation of the initially formed radical anions by molecular oxygen did not compete effectively with the breakdown of the radical anions

  已经研究了一系列喹喔啉二氮氧化物（QDO）化合物的自由基化学和细胞毒性，以探索此类生物还原药物的作用机理。一系列的水溶性3-三氟甲基的（4 - 10），3-苯基（11 - 19），和3-甲基（20 - 21）取代的QDO化合物被设计为跨越一系列与生物还原相符的电子亲和力。厌氧甲酸水溶液缓冲液的稳态辐射分解对QDO的损失的化学计量表明，QDO的单电子还原会生成自由基，该自由基能够通过甲酸的氧化来引发链反应。如EPR自旋捕获实验所确定，3-三氟甲基类似物表现出与HO •释放一致的长链反应。几个碳中心自由基中间体，通过截断细胞色素P450还原酶（POR）使用，进行了表征具有N-末端的QDO化合物的厌氧培养产生ñ -叔丁基α苯基硝酮（PBN）和5-（二乙氧基磷酰基）-5- -甲基-1-吡咯啉-N氧化物（DEPMPO）自旋阱，并通过EPR进行了观察。对产生强氧化性自由基的实验数据进行了很好的模拟，这