5-phenyl-2-(3-trifluoromethylphenyl)oxazole | 439094-80-1

• 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-phenyl-2-(3-trifluoromethylphenyl)oxazole
• 英文别名: 5-Phenyl-2-[3-(trifluoromethyl)phenyl]-1,3-oxazole；5-phenyl-2-[3-(trifluoromethyl)phenyl]-1,3-oxazole
• CAS: 439094-80-1
• 化学式: C₁₆H₁₀F₃NO
• 分子量: 289.257
• InChiKey: DQASKEFAENHPDF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.6
• 重原子数：
  21
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  26
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  5-苯基恶唑 、 间三氟甲基苯腈 在 bis(1,5-cyclooctadiene)nickel (0) 、 potassium phosphate 、 1,2-双(二环己基磷基)-乙烷 作用下， 以 二乙二醇二甲醚 为溶剂， 反应 24.0h， 以66%的产率得到5-phenyl-2-(3-trifluoromethylphenyl)oxazole
  参考文献：
  名称：

  镍催化的腈与芳族腈的偶联

  摘要：

  该手稿描述了Ni催化的唑类化合物与芳族腈的偶联。BPh 3的使用可促进电子形式多样的唑和苄腈的这些芳基化。尽管镍催化剂对于苯基恶唑的芳基化是必需的，但是即使在不存在Ni催化剂的情况下，苯并恶唑与某些腈的芳基化也可以提供芳基化的产物，尽管收率比催化方法低。与未催化的转化相比，镍催化的方法显示出更高的速率和更广阔的范围。

  DOI：

  10.1021/acs.orglett.7b01938

文献信息

• C-H Bond Activation: A Versatile Protocol for the Direct Arylation and Alkenylation of Oxazoles
  作者：Sandrine Piguel、François Besselièvre、Sabrina Lebrequier、Florence Mahuteau-Betzer

  DOI：10.1055/s-0029-1216987

  日期：2009.10

  The versatile palladium complex Pd(PPh3)4 catalyses both direct arylation and alkenylation of oxazoles efficiently. The method is regioselective and stereospecific with respect to bromoalkenes and tolerates a wide range of functional groups.

  多功能的钯配合物Pd(PPh3)4能够高效催化噁唑的直接芳基化和烯基化反应。该方法具有区域选择性和立体专一性，适用于溴代烯烃，并对多种官能团具有耐受性。
• DalPhos/Nickel-Catalyzed C2–H Arylation of 1,3-Azoles Using a Dual-Base System
  作者：Nicholas E. Bodé、Mark Stradiotto

  DOI：10.1021/acs.orglett.3c03393

  日期：2023.12.15

  orane/sodium trifluoroacetate (BTPP/NaTFA) “dual-base” system in combination with an air-stable Ni(II) precatalyst containing either CyPAd-DalPhos or PhPAd-DalPhos. These catalyst systems enable access to a reaction scope that encompasses a range of challenging oxidative addition partners, including (hetero)aryl chlorides as well as pivalates, tosylates, and other related phenol derivatives. The utility

  我们报告了一种用于（苯并）恶唑和（苯并）噻唑 C2 官能化的通用方法，采用叔丁基亚氨基三（吡咯烷）正膦/三氟乙酸钠（BTPP/NaTFA）“双碱”系统与空气稳定相结合含有 CyPAd-DalPhos 或 PhPAd-DalPhos 的 Ni(II) 预催化剂。这些催化剂系统能够实现涵盖一系列具有挑战性的氧化加成伙伴的反应范围，包括（杂）芳基氯以及新戊酸酯、甲苯磺酸酯和其他相关苯酚衍生物。通过活性药物成分的衍生化和噻唑衍生物的 5 mmol 合成证明了该方法的实用性。
• 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。
• Nickel-catalyzed C−H arylation of benzoxazoles and oxazoles: Benchmarking the influence of electronic, steric and leaving group variations in phenolic electrophiles
  作者：Deborah F. Steinberg、Morgan C. Turk、Dipannita Kalyani

  DOI：10.1016/j.tet.2017.02.021

  日期：2017.4

  Electronic, steric and leaving group effects for Ni-catalyzed direct arylations using C-O electrophiles were benchmarked. The scope of arylations with pivalates was general with respect to both the electronics on the electrophile and the azoles. Furthermore, the arylation of azoles with tosylates, mesylates and carbamates with varying electronics was explored, and showed electronic trends similar to those of the pivalate reactions. Finally, the relative rate of arylation of 5-methyl benzoxazole with two electronically-similar electrophiles bearing different leaving groups was established. The results from these studies implicate the following order of relative reactivity: mesylates > pivalates > carbamates. (C) 2017 Elsevier Ltd. All rights reserved.
• Ligandless Microwave-Assisted Pd/Cu-Catalyzed Direct Arylation of Oxazoles
  作者：François Besselièvre、Florence Mahuteau-Betzer、David S. Grierson、Sandrine Piguel

  DOI：10.1021/jo7027135

  日期：2008.4.1

  An efficient microwave-assisted palladium/copper co-mediated direct arylation of oxazoles with aryl bromides under ligandless conditions has been developed. The method is functional group tolerant and provides rapid access to medicinally relevant compounds in good yields. Coupled to the van Leusen oxazole ring synthesis, this methodology is illustrated by an expedient two-step synthesis of the four 2,5-diaryloxazole alkaloids texamine, texaline, balsoxin, and O-Me-halfordinol from commercially available starting materials.