2-diazo-1-(2,4-dichlorophenyl)ethanone | 78344-77-1

• 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: 2-diazo-1-(2,4-dichlorophenyl)ethanone
• 英文别名: 2-Diazonio-1-(2,4-dichlorophenyl)ethen-1-olate
• CAS: 78344-77-1
• 化学式: C₈H₄Cl₂N₂O
• 分子量: 215.039
• InChiKey: JEQIYFJZHITJRW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  19.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-diazo-1-(2,4-dichlorophenyl)ethanone 、 5-苯基呋喃-2,3-二酮 以 苯 为溶剂， 反应 3.0h， 以92%的产率得到
  参考文献：
  名称：

  Andreichikov, Yu.S.; Gein, L.F.; Gein, V.L., Journal of Organic Chemistry USSR (English Translation), 1981, vol. 17, p. 545 - 550

  摘要：

  DOI：
• 作为产物：
  描述：

  2,4-dichlorophenylglyoxal monohydrate 在 caesium carbonate 、 对甲苯磺酰肼 作用下， 以 氯仿 为溶剂， 反应 0.08h， 以91%的产率得到2-diazo-1-(2,4-dichlorophenyl)ethanone
  参考文献：
  名称：

  One-pot synthesis of polyfunctional pyrazoles: an easy access to α-diazoketones from arylglyoxal monohydrates and tosylhydrazine

  摘要：

  A new and efficient method for the generation of alpha-diazoketones has been developed from arylglyoxal monohydrates and tosylhydrazine at room temperature. 1,3-Dipolar cycloaddition reactions were used to constructing polyfunctional pyrazole derivatives by the reaction of generated alpha-diazoketones in situ with electron-deficient alkenes, quinones and coumarins in one pot. The one-dimensional molecular packing of 1H-benzo[f]indazole-4,9-dione derivatives along the c direction demonstrated a helical chain formation via N-H center dot center dot center dot O hydrogen-bonding. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2014.10.044

文献信息

• Diazoaldehyde Chemistry. Part 3. Synthesis of 4-acyl-1<i>H</i>-1,2,3-triazole derivatives
  作者：Özkan Sezer、Kadir Dabak、Ahmet Akar、Olcay Anaç

  DOI：10.1002/hlca.19960790212

  日期：1996.3.20

  Ten new α-diazo-β-oxoaldehydes were condensed with aniline, ammonia, hydroxylamine, and semicarbazide to yield new 4-acyl-(1-substituted)-1H-1,2,3-triazoles in moderate-to-good yields. The method is simple and regiospecific. The latter feature makes this method superior to the widely used acylacetylene + azide approach.

  将十种新的α-重氮-β-乙醛与苯胺，氨，羟胺和氨基脲缩合，以中等至良好的产率生成新的4-酰基-（1-取代）-1 H -1,2,3-三唑。该方法简单且区域特异性。后一种功能使该方法优于广泛使用的酰基乙炔+叠氮化物方法。
• Diazoaldehyde Chemistry. Part 1. Transdiazotization of Acylacetaldehydes in Neutral-to-Acidic Medium. A Direct Approach to the Synthesis of α-Diazo-β-oxoaldehydes
  作者：Özkan Sezer、Olcay Anaç

  DOI：10.1002/hlca.19940770819

  日期：1994.12.14

  non-deformylating transdiazotization of acylacetaldehydes was achieved: the reactions of 2-azido-l-ethylpyridinium tetrafluoroborate (4) with acylacetaldehydes 3 proceeded partially without deformylation to yield 16 new α-diazo-β-oxoaldehydes 1 along with diazomethyl ketones 2, especially in the presence of NaOAc (Scheme 1, Tables 1 and 2). The product distribution was substituent-dependent and could

  首次实现了酰基乙醛的非脱甲酰化重氮化反应：2-叠氮基-1-乙基吡啶鎓四氟硼酸酯（4）与酰基乙醛3的反应部分进行而没有甲酰化，生成了16种新的α-重氮-β-乙醛1与重氮甲基酮2，特别是在存在NaOAc的情况下（方案1，表1和2）。产物分布是取代基依赖性的，并且可以定量相关。这种新的重氮化反应似乎是合成这些重氮氧醛的一种替代，直接且更通用的方法。α-氧代环链烷甲醛5仅给出痕量（如果有的话）的α-重氮环烷酮如图7所示，分离出重排产物6（方案2）。讨论了反应机理（方案4和5）。
• Copper carbenoid mediated N-alkylation of imidazoles and its use in a novel synthesis of bifonazole
  作者：Erick Cuevas-Yañez、Juan Manuel Serrano、Gloria Huerta、Joseph M. Muchowski、Raymundo Cruz-Almanza

  DOI：10.1016/j.tet.2004.08.009

  日期：2004.10

  1H-Imidazoles are readily N-alkylated by a Cu(acac)(2) mediated reaction with alpha-diazocarbonyl compounds or with diazoalkanes generated in situ from the corresponding p-toluensulfonyl hydrazones. The antifungal agent bifonazole was prepared by the latter method. (C) 2004 Elsevier Ltd. All rights reserved.
• Pyrazoline bisphosphonate esters as novel antiinflammatory and antiarthritic agents
  作者：Richard A. Nugent、Megan Murphy、Stephen T. Schlachter、Colin J. Dunn、Robert J. Smith、Nigel D. Staite、Louise A. Galinet、Sharon K. Shields、Danielle G. Aspar、Karen A. Richard、Norman A. Rohloff

  DOI：10.1021/jm00053a017

  日期：1993.1

  Vinylidenebisphosphonic acid tetraethyl ester (1) and diazo ketones 7a-1 in ether at 22-degrees-C yield pyrazoline bisphosphonate tetraethyl esters 8a-1 in moderate to good yield. These compounds were evaluated in animal models of arthritis: rat adjuvant induced polyarthritis (AIP) and murine antigen-induced arthritis (AIA) and a murine model of chronic inflammation, the delayed type hypersensitivity granuloma reaction (DTH-GRA). (5-Benzoyl-2,4-dihydro-3H-pyrazol-3-ylidene)-bisphosphonic acid tetraethyl ester (8a), and [5-(3-fluorobenzoyl)-2,4-dihydro-3H-pyrazol-3-ylidene)bisphosphonic acid tetraethyl ester (8d) significantly inhibited the arthritis models, AIP (15 mg/kg) and AIA (25 mg/kg), as well as the DTH-GRA (25 mg/kg). Conversion of 8a to the corresponding bisphosphonic acid, 10a, resulted in loss of activity Compounds with alkyl substituents on the pyrazoline nitrogen, 9a-d, were inactive in the DTH-GRA. These results show that 8a and 8d have novel antiinflammatory activity and are capable of inhibiting chronic arthritis and inflammation in animals. Such compounds might be in man for treating chronic tissue injury associated with arthropathies such as inflammatory joint disease as well as other chronic inflammatory diseases.
• GEMINAL BISPHOSPHONIC ACIDS AND DERIVATIVES AS ANTI-ARTHRITIC AGENTS
  申请人：THE UPJOHN COMPANY

  公开号：EP0466730B1

  公开（公告）日：1993-07-21