5-(2-chlorophenyl)-2-phenyloxazole

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-(2-chlorophenyl)-2-phenyloxazole
• 英文别名: 5-(2-Chlorophenyl)-2-phenyl-1,3-oxazole
• 化学式: C₁₅H₁₀ClNO
• 分子量: 255.703
• InChiKey: UMCUQNSBRFATGM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.3
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  26
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1-(2-chlorophenyl)-3-phenylprop-2-en-1-one 在 碘苯二乙酸 、 ammonium acetate 作用下， 反应 5.0h， 以73%的产率得到5-(2-chlorophenyl)-2-phenyloxazole
  参考文献：
  名称：

  无金属碘（iii）促进2,5-二芳基恶唑的合成†

  摘要：

  描述了在室温下由廉价且容易获得的取代的查耳酮，（二乙酰氧基碘）苯（PIDA）和乙酸铵（NH 4 OAc）实现2,5-二取代的恶唑的非金属催化的氧化环化。该反应在温和条件下以不需要的配体和额外的碱即可以良好的产率和优异的产率形成各种2,5-二芳基恶唑，具有广泛的底物范围。

  DOI：

  10.1039/c8ob00401c

文献信息

• Formation of Acyl-Substituted Nitrile Ylides by Rh₂(OAc)₄-Catalyzed Decomposition of<i>α</i>-Diazocarbonyl Compounds in Nitriles
  作者：Kazuaki Fukushima、Toshikazu Ibata

  DOI：10.1246/bcsj.68.3469

  日期：1995.12

  The Rh2(OAc)4-catalyzed reactions of α-diazocarbonyl compounds in nitrile in the presence of dimethyl acetylenedicarboxylate (DMAD) gave oxazole and pyrrole derivatives. The formation of the oxazole derivatives is explained in terms of the 1,5-cyclization of an acyl-substituted nitrile ylide intermediate, and the formation of the pyrrole derivatives is explained by the 1,3-dipolar cycloaddition of

  在乙炔二羧酸二甲酯 (DMAD) 存在下，α-重氮羰基化合物在腈中的 Rh2(OAc)4 催化反应得到恶唑和吡咯衍生物。恶唑衍生物的形成通过酰基取代的腈叶立德中间体的 1,5-环化来解释，吡咯衍生物的形成通过相同中间体与 DMAD 的 1,3-偶极环加成来解释。酰基取代的腈叶立德与丙炔酸甲酯的环加成反应的区域化学表明，丙炔基型共振结构的贡献在酰基取代的腈叶立德反应中起重要作用。
• Iron‐Promoted Practical One‐Pot Synthesis of 2,5‐Disubstituted Oxazoles
  作者：Songhui Chen、Donghu Bai、Feng Shi、Jian Li、Chunju Li、Xueshun Jia

  DOI：10.1002/cjoc.201100683

  日期：2012.7

  A practical one‐pot protocol for the synthesis of 2,5‐disubstituted oxazoles from 1‐aryl‐2‐nitroethanones was reported. In the presence of iron/AcOH in acetonitrile, the reaction of 1‐aryl‐2‐nitroethanones with trimethyl orthoacetate or trimethyl orthobenzoate delivered the corresponding 2,5‐disubstituted oxazoles in moderate to good yields.

  据报道，有一个实用的一锅法从1-芳基-2-硝基乙酮合成2，5-二取代的恶唑。在乙腈中存在铁/ AcOH时，1-芳基-2-硝基乙酮与原乙酸三甲酯或原苯甲酸三甲酯的反应以中等至良好的产率生成了相应的2,5-二取代的恶唑。
• Metal-Free sp3 C–H Functionalization: PABS/I2-Promoted Synthesis of Polysubstituted Oxazole Derivatives from Arylethanones and 2-Amino-2-alkyl/arylacetic Acid
  作者：Guosheng Huang、Ting Hu、Hao Yan、Xingxing Liu、Chaoyang Wu、Yuxing Fan、Jing Huang

  DOI：10.1055/s-0035-1560660

  日期：——

  nonmetal-catalyzed process for the synthesis of polysubstituted oxazoles from inexpensive and readily available α-amino acids and methyl ketones is established. This reaction is proposed to achieve oxidative cleavage of C(sp 3 )–H bonds, followed by decarboxylation and annulation. The mild reaction conditions employed in both cases enable the tolerance of a wide range of functional groups as well as high reaction

  建立了一种由廉价且容易获得的 α-氨基酸和甲基酮合成多取代恶唑的非金属催化方法。该反应旨在实现 C(sp 3 )-H 键的氧化裂解，然后进行脱羧和环化。在这两种情况下采用的温和反应条件能够耐受广泛的官能团以及高反应效率。
• Electrochemical construction of 2,5-diaryloxazoles via N–H and C(sp3)-H functionalization
  作者：Tong Li、Leping Pan、Yan Zhang、Jihu Su、Kai Li、Kuiliang Li、Hu Chen、Qi Sun、Zhiyong Wang

  DOI：10.1016/j.cclet.2023.108897

  日期：2024.4

  An efficient NH and C(sp)-H functionalization of aryl ketones with benzylamines/amino acids was developed under mild conditions by virtue of anodic oxidation. A variety of functionalized 2,5-diaryloxazoles were obtained with good to excellent yields. Moreover, some important natural products can be prepared by this method. The reaction features a broad substrate scope, scalability, metal-free and chemical

  通过阳极氧化，在温和条件下开发了芳基酮与苄胺/氨基酸的有效 NH 和 C(sp)-H 官能化。以良好至优异的收率获得了多种官能化的2,5-二芳基恶唑。此外，一些重要的天然产物可以通过该方法制备。该反应具有底物范围广、可扩展、无金属、无化学氧化剂等特点。
• Indium-mediated one-pot synthesis of benzoxazoles or oxazoles from 2-nitrophenols or 1-aryl-2-nitroethanones
  作者：Jung June Lee、Jihye Kim、Young Moo Jun、Byung Min Lee、Byeong Hyo Kim

  DOI：10.1016/j.tet.2009.08.059

  日期：2009.10

  One-pot reduction-triggered heterocyclizations from 2-nitrophenols to benzoxazoles and from 1-aryl-2-nitroethanones to oxazoles were investigated. In the presence of indium/AcOH in benzene at reflux, 2-nitrophenols and R-C(OMe)(3) (R=H, Me, Ph) produced excellent yields of corresponding benzoxazoles within an hour. Similarly, 1-aryl-2-nitroethanones and Ph-C(OMe)(3) in the presence of indiurn/AcOH in acetonitrile transformed into the corresponding oxazoles with good yields. (c) 2009 Elsevier Ltd. All rights reserved.