1,3,3-triphenyl-propan-1-one oxime | 1669-73-4

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: 1,3,3-triphenyl-propan-1-one oxime
• 英文别名: 1,3,3-Triphenyl-propan-1-on-oxim；3,3-Diphenylpropiophenonoxim
• CAS: 1669-73-4
• 化学式: C₂₁H₁₉NO
• 分子量: 301.388
• InChiKey: QXNUNFUGOPDZSH-UHFFFAOYSA-N

物化性质

• 熔点：
  133-134 °C
• 沸点：
  480.6±34.0 °C(Predicted)
• 密度：
  1.04±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.09
• 重原子数：
  23.0
• 可旋转键数：
  5.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  32.59
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  1,3,3-triphenyl-propan-1-one oxime 生成 N,3,3-三苯基丙酰胺
  参考文献：
  名称：

  Kohler, American Chemical Journal, 1904, vol. 31, p. 642

  摘要：

  DOI：
• 作为产物：
  描述：

  反式-查耳酮 在 吡啶 、 三氟甲磺酸 、 盐酸羟胺 作用下， 以 乙醇 为溶剂， 反应 1.5h， 生成 1,3,3-triphenyl-propan-1-one oxime
  参考文献：
  名称：

  Friedel-Crafts-type reactions involving di- and tricationic species. Onium-allyl dications and O,O-diprotonated aci-nitro species bearing a protonated carbonyl group

  摘要：

  Stable carbocations do not react with nonactivated benzenes. For example, acetophenone does not react with benzene in the presence of trifluoromethanesulfonic acid (TFSA), while trifluoroacetophenone does do so under acidic conditions owing to activation of the electrophilicity of the hydroxycarbenium cation by the trifluoromethyl group. This and other studies suggest that an electron-withdrawing substituent on the cationic center increases the reactivity toward benzenes. In this paper, involvement of multiply positively charged (dicationic and tricationic) species, which have sufficient electrophilicity toward benzene, is demonstrated in the acid-catalyzed reactions of cinnamaldehyde and its derivatives and also in the acid-catalyzed reactions of nitromethanes. The species formed from cinnamaldehyde, cinnamaldimine, cinnamaldoxime, and their derivatives in TFSA or TFSA-SbF5 have an adequate reactivity toward benzene. O-Protonated cinnamaldehyde and its derivatives, N-protonated cinnamaldimine, and N,N-dimethylcinnamaldiminium salt do not react with benzene. Since a strong acid catalyst is required for the reactions, participation of doubly protonated species, onium-allyl dications, is proposed. Ab initio calculations of (1) the donor-acceptor interaction energies of a neutral donor (such as water and ammonia) and a doubly charged allyl dication and (2) proton affinities demonstrated that the ammonium-allyl dication is more stable than the oxonium-allyl dication, in accordance with the experimental observation. Nitronic acids also react with benzene at the ipso position with respect to the nitro group to give the phenylated oximes in the presence of TFSA. The reaction with benzene is not catalyzed by trifluoroacetic acid, which is sufficiently acidic to monoprotonate a nitronic acid to the protonated aci-nitro form. The reaction requires a stronger acid, trifluoromethanesulfonic acid, suggesting intervention of the dication formed by O,O-diprotonation of aci-nitroalkanes rather than the monoprotonated aci-nitroalkane. As a result of further study on the phenylation reactions, we found a facile phenylation reaction of nitromethanes substituted with an electron-withdrawing group, catalyzed by TFSA, to give phenylated alpha-carbonyloximes in high yields. A triply positively charged cation, an O,O-diprotonated aci-nitro species bearing a protonated ethoxycarbonyl group, which can react with nonactivated benzene, is proposed to be an intermediate in this reaction.

  DOI：

  10.1021/ja00004a044

文献信息

• Selectfluor-Bu₄NI-Mediated C(sp³)-H Oxidation in Aqueous Media: Synthesis of Δ²-Isoxazolines from Oximes
  作者：Di Shi、Hai-Tao Qin、Chen Zhu、Feng Liu

  DOI：10.1002/ejoc.201500780

  日期：2015.8

  C–H bond within a complex molecule through a free-radical pathway is a valuable tool in synthetic chemistry. Herein, we developed an efficient transition-metal-free approach to generate Δ2-isoxazolines from oximes by radical-mediated C(sp3)–H oxidation. Investigation of the mechanism suggested that in the presence of Selectfluor and Bu4NI, the homolysis of the in situ formed O–I bond generated an iminoxyl

  通过自由基途径对复杂分子内的脂肪族 C-H 键进行直接官能化是合成化学中的一种有价值的工具。在此，我们开发了一种有效的无过渡金属方法，通过自由基介导的 C(sp3)-H 氧化从肟生成 Δ2-异恶唑啉。机理研究表明，在 Selectfluor 和 Bu4NI 存在下，原位形成的 O-I 键的均裂产生了一个亚胺氧基自由基，促进了随后的 1,5-H 转移和 C(sp3)-H 氧化。
• TEMPO‐Mediated Selective Synthesis of Isoxazolines, 5‐Hydroxy‐2‐isoxazolines, and Isoxazoles via Aliphatic <i>δ</i> ‐C(sp3)‐H Bond Oxidation of Oximes
  作者：Santanu Mondal、Sourabh Biswas、Krishna Gopal Ghosh、Devarajulu Sureshkumar

  DOI：10.1002/asia.202100572

  日期：2021.9

  Three heterocycles from one starting material: A divergent method for the synthesis of isoxazolines, isoxazoles, and 5-hydroxy-2-isoxazolines from oximes is developed using TEMPO as a radical initiator. Oxidants control the selectivity of the product formations.

  来自一种原料的三个杂环：使用 TEMPO 作为自由基引发剂开发了一种从肟合成异恶唑啉、异恶唑和 5-羟基-2-异恶唑啉的不同方法。氧化剂控制产物形成的选择性。
• Arylboronic Acid Catalyzed Dehydrative Mono-/Dialkylation Reactions of β-Ketoacids and Alcohols
  作者：Haipeng Hu、Xin Wu、Yuqian Qiu、Cuilin Wang、Wei Wang、Guizhou Yue、Hanguang Wang、Juhua Feng、Guangtu Wang、Hailiang Ni、Ping Zou

  DOI：10.1021/acs.orglett.1c04050

  日期：2022.1.28

  alcohols and β-ketoacids were realized under arylboronic acid catalysis, furnishing a series of β-aryl ketones and β-ketoesters in yields of 15–99%, with CO2 and H2O being the byproducts. In this context, the decarboxylative alkylation reaction occurred to give β-aryl ketones at 50 °C, while the decarboxylation was suppressed to generate dialkylated ester products at 0 °C. A possible catalytic cycle was proposed

  醇和β-酮酸的脱水单/二烷基化反应在芳基硼酸催化下实现，以15-99％的收率提供一系列β-芳基酮和β-酮​​酯，副产物CO 2和H 2 O . 在这种情况下，脱羧烷基化反应在 50°C 时发生生成 β-芳基酮，而在 0°C 时脱羧被抑制生成二烷基酯产物。基于对照实验提出了一种可能的催化循环。
• The Reversible Addition of Aromatic Compounds to Benzalacetophenones
  作者：J. T. Eaton、D. B. Black、Reynold C. Fuson

  DOI：10.1021/ja01318a045

  日期：1934.3