2-phenyl-5-(thiophen-2-yl)oxazole | 1415610-06-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-phenyl-5-(thiophen-2-yl)oxazole
• 英文别名: 2-Phenyl-5-thiophen-2-yl-1,3-oxazole；2-phenyl-5-thiophen-2-yl-1,3-oxazole
• CAS: 1415610-06-8
• 化学式: C₁₃H₉NOS
• 分子量: 227.287
• InChiKey: FDNZZLANILJDOE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  16
• 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：
  54.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-乙酰基噻吩 在 碘 作用下， 以 二甲基亚砜 为溶剂， 生成 2-phenyl-5-(thiophen-2-yl)oxazole
  参考文献：
  名称：

  Metal-free dual sp3 C–H functionalization: I2-promoted domino oxidative cyclization to construct 2,5-disubstituted oxazoles

  摘要：

  An I-2-promoted sp(3) C-H functionalization has been developed for the synthesis of 2,5-disubstituted oxazoles from easily available methyl ketones and benzylamines without any metal and peroxide catalyst. This domino oxidative cyclization process involves the cleavage of C H bond and the formation of C-N, C-O bonds. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.10.072

文献信息

• Copper-catalyzed oxidative cyclization of chalcone and benzylic amine leading to 2,5-diaryl oxazoles via carbon–carbon double bond cleavage
  作者：Dongfang Liu、Jintao Yu、Jiang Cheng

  DOI：10.1016/j.tet.2013.12.077

  日期：2014.2

  oxidative cyclization of chalcone with benzylic amine is achieved, providing 2,5-diaryl oxazoles in moderate to good yields. The procedure employs O2 as a clean oxidant and involves an oxidative cleavage of the CC bond as the key step.

  实现了查尔酮与苄基胺的铜催化氧化环化，以中等至良好的产率提供了2,5-二芳基恶唑。该方法使用O 2作为清洁氧化剂，并且涉及C C键的氧化裂解作为关键步骤。
• Practical oxazole synthesis mediated by iodine from α-bromoketones and benzylamine derivatives
  作者：Wen-Chao Gao、Ruo-Lin Wang、Chi Zhang

  DOI：10.1039/c3ob41566j

  日期：——

  system of I2/K2CO3 could efficiently promote the oxazole synthesis from α-bromoketones and benzylamine derivatives in DMF. This method was not only suitable for 2,5-diaryl oxazole synthesis but also for 2,4,5-trisubstituted oxazole and 5-alkyl/alkenyl oxazole synthesis. Furthermore, this method was successfully applied to a one-step synthesis of a natural product halfordinol in 62% yield.

  I 2 / K 2 CO 3试剂体系可有效促进DMF中α-溴代酮和苄胺衍生物的恶唑合成。该方法不仅适用于2，5-二芳基恶唑的合成，而且适用于2，4，5-三取代的恶唑和5-烷基/烯基恶唑的合成。此外，该方法已成功地以62％的收率成功地一步合成了天然产物Halfordinol。
• Zirconium-redox-shuttled cross-electrophile coupling of aromatic and heteroaromatic halides
  作者：Ting-Feng Wu、Yue-Jiao Zhang、Yue Fu、Fang-Jie Liu、Jian-Tao Tang、Peng Liu、F. Dean Toste、Baihua Ye

  DOI：10.1016/j.chempr.2021.06.007

  日期：2021.7

  palladium-catalyzed processes. The zirconaaziridine-mediated palladium (ZAPd)-catalyzed reaction shows excellent compatibility with various functional groups and diverse heteroaromatic scaffolds. In accord with density functional theory (DFT) calculations, a redox transmetallation between the oxidative addition product and the zirconaaziridine is proposed as the crucial elementary step. Thus, cross-coupling selectivity

  过渡金属催化的交叉亲电偶联 (XEC) 是锻造 C(sp 2 )–C(sp 2 ) 的有力工具) 联芳基分子中来自丰富芳族卤化物的键。虽然通过多金属 XEC 合成不对称联芳基化合物具有很高的合成价值，但两种杂芳族卤化物的选择性 XEC 仍然难以捉摸且具有挑战性。在这里，我们报告了一种均相 XEC 方法，该方法依赖于锆氮丙啶配合物作为双钯催化过程的穿梭。锆氮丙啶介导的钯 (ZAPd) 催化反应显示出与各种官能团和各种杂芳族支架的良好相容性。根据密度泛函理论 (DFT) 计算，氧化加成产物和锆氮丙啶之间的氧化还原金属转移被认为是关键的基本步骤。因此，使用单一过渡金属催化剂的交叉偶联选择性由 Pd(0) 氧化加成到芳族卤化物的相对速率控制。总体而言，组合还原剂和金属转移剂的概念为过渡金属还原偶联催化的发展提供了机会。
• Synthesis of 2,5-Disubstituted Oxazoles from Arylacetylenes and α-Amino Acids through an I2/Cu(NO3)2•3H2O-Assisted Domino Sequence
  作者：Anxin Wu、Jungang Wang、Yan Cheng、Jiachen Xiang

  DOI：10.1055/s-0037-1612087

  日期：2019.4

  5-disubstituted oxazoles from easily available arylacetylenes and α-amino acids in the presence of Cu(NO3)2•3H2O and iodine. This reaction ­process involves the I2/Cu(NO3)2•3H2O-assisted transformation of ­arylacetylene to α-iodo acetophenone, Kornblum oxidation to phenylglyoxal, condensation to imine, decarboxylation/annulation/oxidation reaction sequence to approach 2,5-disubstituted oxazoles.

  在 Cu(NO3)2•3H2O 和碘的存在下，从容易获得的芳基乙炔和 α-氨基酸合成 2,5-二取代恶唑的新策略已经开发出来。该反应过程包括 I2/Cu( )2•3H2O 辅助芳基乙炔转化为 α-碘苯乙酮、Kornblum 氧化为苯乙二醛、缩合为亚胺、脱羧/环化/氧化反应序列以接近 2,5-二取代恶唑。
• A facile synthesis of 2,5-disubstituted oxazoles via a copper-catalyzed cascade reaction of alkenes with azides
  作者：Jiu-ling Li、Ying-chun Wang、Wei-ze Li、Heng-shan Wang、Dong-liang Mo、Ying-ming Pan

  DOI：10.1039/c5cc06487b

  日期：——

  A novel and efficient approach to 2,5-disubstituted oxazoles is developed via a 1,3-dipolar cycloaddition/ring cleavage/1,2-H migration/denitrogenation/copper-catalyzed aerobic oxidative dehydrogenative cyclization cascade. The desired products can be obtained from readily available...

  通过1，3-偶极环加成/环裂解/ 1,2-H迁移/脱氮/铜催化的好氧氧化脱氢环化级联反应，开发了一种新颖，有效的2,5-二取代恶唑方法。所需的产品可以从容易获得的产品中获得。