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4-aza-6-nitrobenzofuroxan | 112253-17-5

中文名称
——
中文别名
——
英文名称
4-aza-6-nitrobenzofuroxan
英文别名
6-Nitro-[1,2,5]oxadiazolo[3,4-b]pyridine 1-oxide;6-nitro-1-oxido-[1,2,5]oxadiazolo[3,4-b]pyridin-1-ium
4-aza-6-nitrobenzofuroxan化学式
CAS
112253-17-5
化学式
C5H2N4O4
mdl
——
分子量
182.095
InChiKey
LMEZWFQHMBBWLJ-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:
    95 °C
  • 沸点:
    361.7±45.0 °C(Predicted)
  • 密度:
    2.13±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    0.5
  • 重原子数:
    13
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    110
  • 氢给体数:
    0
  • 氢受体数:
    6

反应信息

  • 作为反应物:
    描述:
    4-aza-6-nitrobenzofuroxan丙酮 为溶剂, 生成 6-Nitro-[1,2,5]oxadiazolo[3,4-b]pyridine 3-oxide
    参考文献:
    名称:
    1H、13C、14N、15N和17O核磁共振谱研究了一些吡啶并呋喃衍生物的呋喃重排
    摘要:
    Pyridofuroxan ([1,2,5]oxodiazolo[3,4-b]pyridine 1-oxide) undergoes isomerization between the N1-oxide and N3-oxide forms which can be observed by the H-1, C-13 and N-15 NMR spectroscopy but not by N-14 and O-17 NMR at ambient and low temperatures. The rearrangement becomes slower at low temperatures and at 233 K H-1 NMR signals for the two structures become observable. H-1, C-13 and N-15 chemical shifts and H-1-H-1, C-13-H-1 and C-13-C-13 coupling constants are used to characterize both forms in the equilibrium mixture. From the H-1 NMR integrals at 233 K equilibrium constants are calculated. Protonation studies using trifluoroacetic acid as a solvent showed the favoured site of protonation to be the pyridine N4 nitrogen atom. DFT shielding calculations are reported for the C-13, N-15 and O-17 nuclei which support the assignments given. From the point of view of structural changes, (1)J(CC) data for 8-nitrotetrazolo[1,5-a]pyridine and o-nitroaminopyridine as precursors of the pyridofuroxans are given for comparison purposes. X-ray diffraction data on 5-methoxypyridofuroxan support the structural results obtained from the NMR investigations. Copyright (C) 2000 John Wiley & Sons, Ltd.
    DOI:
    10.1002/1099-1395(200008)13:8<480::aid-poc268>3.0.co;2-z
  • 作为产物:
    描述:
    3,5-二硝基-2-氨基吡啶碘苯二乙酸 作用下, 以 为溶剂, 反应 5.0h, 以90%的产率得到4-aza-6-nitrobenzofuroxan
    参考文献:
    名称:
    CH酸在药理学导向化合物的合成中对4-氮杂-6-硝基苯并呋喃的亲核脱芳香化作用。
    摘要:
    4-Aza-6-硝基苯并呋喃呋喃(ANBF)与1,3-二羰基化合物和其他CH酸反应生成碳键合的1,4-加合物-与呋喃喃环稠合的1,4-二氢吡啶。对于大多数酸性β-二酮(主要以烯醇形式存在于极性溶剂中)而言,反应在不存在任何强调ANBF高度亲电特性的添加碱的情况下进行。所得化合物与一分子重要的1,4-二氢吡啶片段一起结合在一个分子中的NO供体呋喃环上,因此可以被认为是设计面向药理学的杂环系统的潜在平台。
    DOI:
    10.3762/bjoc.13.277
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文献信息

  • Facile One-Pot Synthesis of 2,1,3-Benzoxadiazole<i>N</i>-Oxide (Benzofuroxan) Derivatives Under Phase-Transfer Catalysis
    作者:N. R. Ayyangar、S. Madan Kumar、K. V. Srinivasan
    DOI:10.1055/s-1987-28023
    日期:——
    Several 2,1,3-benzoxadiazole N-oxide (benzofuroxan) derivatives are synthesized from the corresponding o-chloronitrobenzenes in a one-pot operation by stirring with sodium azide in dichloroethane in the presence of benzyl tributylammonium bromide as a phase-transfer catalyst. The moderate reaction conditions enable the isolation of the intermediate reactive azido compounds.
    在苄基三丁基溴化铵作为相转移催化剂的存在下,在二氯乙烷中与叠氮化钠搅拌,以相应的邻氯硝基苯为原料,通过单锅操作合成了多种 2,1,3-苯并噁二唑 N-氧化物(苯并呋喃)衍生物。在温和的反应条件下,可以分离出中间活性叠氮化合物。
  • Ranking the Reactivity of Superelectrophilic Heteroaromatics on the Electrophilicity Scale
    作者:François Terrier、Sami Lakhdar、Taoufik Boubaker、Régis Goumont
    DOI:10.1021/jo0505526
    日期:2005.8.1
    ions. Such a ranking holds promise for expanding the range of coupling reactions which can be envisioned with such strongly electron-deficient neutral heteroaromatics as nitrobenzofuroxans and related compounds. Arguments are also given which exclude the possibility for the reactions studied to proceed via an electron-transfer mechanism.
    一系列参考碳亲核试剂,包括的反应的动力学Ñ -methylpyrrole甲,吲哚乙,Ñ甲基吲Ç,和烯胺d - g ^,用10缺电子芳族和杂芳族底物(1 - 10),从而导致在形成稳定的阴离子σ加合物时,已在20°C的乙腈中进行了研究。结果表明,与这些过程的碳-碳偶联步骤有关的二阶速率常数k 1很好地拟合了三参数方程log k(20°C)= s(Ñ + ë),允许亲电参数的确定ë的1 - 10,因此,通过迈尔等人用于阳离子电体限定在全面亲电尺度这些中性缺电子化合物的排名。(迈尔,H。;肯普夫,B,; Ofial,AR度Acc。化学式RES。2003,36,66)。所述Ë的值1 - 10被发现覆盖范围从-13至-5,由1,3,5-三硝基苯要去1中,至少活性分子,以4,6- dinitrotetrazolo [1,5-一个]吡啶8,4-硝基-6-三氟甲磺酰基苯并呋喃3和4,6-二硝基苯并呋喃2这
  • Dual Behavior of 4-Aza-6-nitrobenzofuroxan. A Powerful Electrophile in Hydration and σ-Complex Formation and a Potential Dienophile or Heterodiene in Diels−Alder Type Reactions
    作者:F. Terrier、M. Sebban、R. Goumont、J. C. Hallé,、G. Moutiers、I. Cangelosi、E. Buncel
    DOI:10.1021/jo0005114
    日期:2000.11.1
    found to be a versatile Diels-Alder reagent, as a result of the low aromatic character of its six-membered ring. Upon treatment of 2 with cyclopentadiene and 2,3-dimethylbutadiene, various reactivity patterns have been observed. These led to different cycloadducts arising from normal as well as inverse electron-demand condensations involving the pyridine ring as the dienophile or the heterodiene contributor
    在研究超亲电子4,6-二硝基苯并呋喃聚糖(DNBF,1)的氮杂类似物的反应性时,我们发现硝基取代的吡喃呋喃烷2在水溶液中给出了非常稳定的水合物3(由ca. 50%H(2)SO(4)(H(0)约为-3)以完全恢复2)。水合2的平衡常数K(H)()2(O)估计> / = 100,仅与报告的高活化中性多氮杂芳族化合物水合的K(H)()2(O)值相当如2-和6-羟基哌啶或7-氮杂哌啶。有趣的是,3的NH基团在相当低的pH值下电离(p = 5.79),提供了阴离子羟基sigma-加合物4,其热力学稳定性比蝶啶的相关sigma-加合物高10(8)倍。实验证据表明4比DNBF的羟基sigma加合物稳定得多,这不仅表明2在迄今为止已知的最亲电杂芳族化合物中位居第二,而且事实上氮杂基团也可能与氮杂基团中的硝基一样有效。促进sigma复杂的形成。由于六元环的芳香性低,因此2也是一种通用的Diels-Alder
  • Synthesis of stable adducts of highly electrophilic nitro(het)arenes with С-nucleophiles
    作者:A. M. Starosotnikov、M. A. Bastrakov、V. A. Kokorekin
    DOI:10.1007/s11172-022-3435-0
    日期:2022.3
    The reaction of highly electrophilic azolo[b]pyridines with pyrrole and indole derivatives as nucleophiles afforded 1,4-addition products to the pyridine ring. The reactions of structurally similar meta-dinitrobenzo-fused heterocycles (furoxan, thiadiazole, selenadiazole, pyridine) with C-nucleophiles (salts of ketones and 2-nitropropane) gave stable anionic σ-complexes in high yields. Their oxidation led to rearomatization with the formation of the corresponding products of substitution of a hydrogen atom with the nucleophile. The oxidation was generally accompanied by the decomposition of σ-complexes into the parent compounds.
    高亲电性的偶氮并[b]吡啶与作为亲核体的吡咯和吲哚衍生物反应,得到了吡啶环的 1,4 加成产物。结构类似的元二硝基苯并融合杂环(呋喃、噻二唑、硒二唑、吡啶)与 C-亲核物(酮和 2-硝基丙烷的盐类)的反应产生了高产率的稳定阴离子 σ-络合物。它们在氧化过程中会发生重气化,形成相应的氢原子与亲核物取代的产物。氧化通常伴随着 σ-络合物分解为母体化合物。
  • Diels–Alder trapping of an o-dinitroso intermediate in the 1-oxide/3-oxide interconversion of a 2,1,3-benzoxadiazole derivative
    作者:Muriel Sebban、Régis Goumont、Jean Claude Hallé、François Terrier、Jérome Marrot
    DOI:10.1039/a902170a
    日期:——
    Convincing evidence is presented that the o-dinitroso intermediate involved in the exchange of the 1-oxide and 3-oxide tautomers of 6-nitro[2,1,3]oxadiazolo[4,5-b]pyridine 1-oxide 5 is the precursor of the Diels–Alder diadduct 7 isolated upon treatment of this compound with cyclohexadiene in CHCl3.
    有令人信服的证据表明,在6-硝基[2,1,3]恶二唑并[4,5-b]吡啶1-氧化物5的1-氧化物和3-氧化物互变体交换过程中,涉及的o-二亚硝基中间体是Diels-Alder二聚体7的前体,该化合物在CHCl3中与环己二烯反应后分离出来。
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