O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine | 72915-12-9

• 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: O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine
• 英文别名: PFBHA；pentafluorobenzylhydroxylamine；O-[(2,3,4,5,6-pentafluorophenyl)methyl]hydroxylamine
• CAS: 72915-12-9
• 化学式: C₇H₄F₅NO
• 分子量: 213.107
• InChiKey: UOISMTPJFYEVBW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  35.2
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine 在 四丁基氟化铵 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 4.67h， 生成 4-methoxy-1-((perfluorophenyl)methoxy)indolin-2-one
  参考文献：
  名称：

  Metal- and Oxidant-Free Modular Approach To Access N-Alkoxy Oxindoles via Aryne Annulation

  摘要：

  An unprecedented metal- and oxidant-free (intermolecular) approach to access N-alkoxy oxindoles via [3 + 2] cycloadition of in situ generated electrophilic species viz. aryne and (putative) aza-oxyallyl cation is reported. This approach is amenable to both C3-unsubstituted as well as C3-substituted oxindoles. A one-pot manipulation further makes this reaction highly practical. The versatility of this approach was demonstrated through valuable synthetic transformations.

  DOI：

  10.1021/acs.orglett.8b01972
• 作为产物：
  描述：

  α-溴-2,3,4,5,6-五氟甲基苯酸酯 在 一水合肼 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 氯仿 为溶剂， 反应 4.0h， 生成 O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine
  参考文献：
  名称：

  铑催化重氮酰胺环化合成N-(2,3,4,5,6-五氟苄氧基)-γ-内酰胺

  摘要：

  描述了 N-(2,3,4,5,6-五氟-苄氧基) 重氮酰胺的铑催化环化，产生相应的 γ-内酰胺。环化基于分子内催化插入 C-H 键。获得了 14 种内酰胺，产率高达 91%，ee 高达 88%。加巴喷丁盐酸盐，一种 GABA 类似物，也通过这种方法合成，这表明 2,3,4,5,6-五氟苄氧基的脱保护是可能的。

  DOI：

  10.1002/ejoc.201402571

文献信息

• LC−MS Analysis of Carbonyl Compounds and Their Occurrence in Diesel Emissions
  作者：Chris A. Jakober、M. Judith Charles、Michael J. Kleeman、Peter G. Green

  DOI：10.1021/ac060301c

  日期：2006.7.1

  carbonyls investigated. For all but five of the carbonyls examined, a pseudomolecular (M + H)+ ion is the base peak in the APCI positive ion mass spectra of PFBHA oxime derivatives and is observed in four of the five exceptions. Application of the evaluated analysis methodology to heavy-duty diesel source emissions facilitated the quantification of 10 aliphatic carbonyls (5 C5-C9 ketones, 4 C6 unsaturated

  液相色谱结合大气压化学电离（APCI）离子阱质谱（ITMS）被应用于大气中与气溶胶有关的羰基化合物。给出了以未衍生和O-（2,3,4,5,6-五氟苄基）羟胺（PFBHA）肟形式分析的24种模型化合物的正负离子检测质谱的表征。PFBHA衍生化的加入增强了许多被研究的羰基化合物的检测和灵敏度。对于除五个以外的所有羰基，在PFBHA肟衍生物的APCI正离子质谱图中，假分子（M + H）+离子是基峰，在五个例外中的四个中均观察到。将评估的分析方法应用于重型柴油机排放源，有助于定量10种脂肪族羰基（5个C5-C9酮，4个C6不饱和酮，1个C6二羰基）和14个芳族羰基（1个C9醛，5个C8-C13酮） ，8个C6-C14醌）。测量了气相和颗粒相羰基化合物的柴油卡车发动机排放因子，范围为0.55-540 microg km（-1）。气相色谱排放因子与ITMS气相色谱分析结果吻合良好。
• Identification and Quantification of Aerosol Polar Oxygenated Compounds Bearing Carboxylic or Hydroxyl Groups. 1. Method Development
  作者：M. Jaoui、T. E. Kleindienst、M. Lewandowski、E. O. Edney

  DOI：10.1021/ac049919h

  日期：2004.8.1

  In this study, a new analytical technique was developed for the identification and quantification of multifunctional compounds containing simultaneously at least one hydroxyl or one carboxylic group, or both. This technique is based on derivatizing first the carboxylic group(s) of the multifunctional compound using an alcohol (e.g., methanol, 1-butanol) in the presence of a relatively strong Lewis acid (BF3) as a catalyst. This esterification reaction quickly and quantitatively converts carboxylic acids to their ester forms. The second step is based on silylation of the ester compounds using bis(trimethylsilyl) trifluoroacetamide (BSTFA) as the derivatizing agent. For compounds bearing ketone groups in addition to carboxylic and hydroxyl groups, a third step was used based on PFBHA derivatization of the carbonyls. Different parameters including temperature, reaction time, and effect due to artifacts were optimized. A GC/MS in EI and in methane-CI mode was used for the analysis of these compounds. The new approach was tested on a number of multifunctional compounds. The interpretation of their EI (70 eV) and CI mass spectra shows that critical information is gained leading to unambiguous identification of unknown compounds. For example, when derivatized only with BF3−methanol, their mass spectra comprise primary ions at m/z M•+ + 1, M•+ + 29, and M•+ − 31 for compounds bearing only carboxylic groups and M•+ + 1, M•+ + 29, M•+ − 31, and M+. − 17 for those bearing hydroxyl and carboxylic groups. However, when a second derivatization (BSTFA) was used, compounds bearing hydroxyl and carboxylic groups simultaneously show, in addition to the ions observed before, ions at m/z M•+ + 73, M•+ − 15, M•+ − 59, M•+ − 75, M•+ − 89, and 73. To the best of our knowledge, this technique describes systematically for the first time a method for identifying multifunctional oxygenated compounds containing simultaneously one or more hydroxyl and carboxylic acid groups.

  在本研究中，开发了一种新的分析技术，用于鉴定和定量含有至少一个羟基或一个羧基或两者的多官能团化合物。该技术基于首先使用醇（例如甲醇、1-丁醇）在相对较强的路易斯酸（BF3）催化下对多官能团化合物的羧基进行衍生化。这种酯化反应迅速且定量地将羧酸转化为酯形式。第二步是使用双(三甲基硅基)三氟乙酰胺（BSTFA）作为衍生化剂对酯化合物进行硅烷化。对于除羧基和羟基外还含有酮基的化合物，采用了基于PFBHA对羰基进行衍生化的第三步。优化了包括温度、反应时间和因人工产物引起的影响等多个参数。使用电子轰击源（EI）和甲烷化学电离（CI）模式的气相色谱/质谱法（GC/MS）分析了这些化合物。对多种多官能团化合物测试了新方法。对其EI（70 eV）和CI质谱的解释表明，获得了关键信息，从而能够明确鉴定未知化合物。例如，仅通过 −甲醇衍生化时，它们的质谱包含仅含有羧基的化合物的离子m/z M•+ + 1、M•+ + 29和M•+ − 31，以及同时含有羟基和羧基的化合物的离子m/z M•+ + 1、M•+ + 29、M•+ − 31和M•+ − 17。然而，当使用第二步衍生化（BSTFA）时，同时含有羟基和羧基的化合物除了之前观察到的离子外，还显示出m/z M•+ + 73、M•+ − 15、M•+ − 59、M•+ − 75、M•+ − 89和73的离子。据我们所知，这项技术首次系统地描述了一种鉴定同时含有一个或多个羟基和羧酸基团的多官能团含氧化合物的方法。
• Henry's Law Constants of Carbonyl−Pentafluorobenzyl Hydroxylamine (PFBHA) Derivatives in Aqueous Solution
  作者：Hugo Destaillats、M. Judith Charles

  DOI：10.1021/je025545i

  日期：2002.11.1

  components in urban and rural atmospheres. The design of efficient samplers based on aqueous solutions of the derivatiza