2-(3-methoxyphenyl)benzoxazole | 32959-59-4

• 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-(3-methoxyphenyl)benzoxazole
• 英文别名: 2-(3-methoxyphenyl)benzo[d]oxazole；2-(3-methoxyphenyl)-1,3-benzoxazole
• CAS: 32959-59-4
• 化学式: C₁₄H₁₁NO₂
• 分子量: 225.247
• InChiKey: LBYPXCKNONYICH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  35.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(3-methoxyphenyl)benzoxazole 在 dipotassium peroxodisulfate 、 silver(I) nitrite 、 氧气 、 palladium diacetate 作用下， 反应 42.0h， 以94%的产率得到2-(5-Methoxy-2-nitrophenyl)benzo[d]oxazole
  参考文献：
  名称：

  Palladium-catalyzed ortho-nitration of 2-arylbenzoxazoles

  摘要：

  An efficient and general protocol for palladium-catalyzed chelation-assisted ortho-nitration of 2-arylbenzoxazoles has been developed. This nitration exhibits high regioselectivity for the substrates, and the reaction could tolerate many functional groups such as F, Cl, Br, CH3, CH3O, affording ortho-nitration products in moderate to good yields. Moreover, some 2-arylbenzoxazole heterocyclic analogues proceed well under this catalytic system. Further studies have been performed to obtain insight into the mechanism. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2015.10.035
• 作为产物：
  描述：

  2-(3-Methoxybenzylideneamino)Phenol 在 2-phenyl-6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazol-2-ium tetrafluoroborate 、 3,3',5,5'-四叔丁基-4,4'-联苯醌 、 potassium tert-butylate 作用下， 以 二甲基亚砜 为溶剂， 反应 12.0h， 以85%的产率得到2-(3-methoxyphenyl)benzoxazole
  参考文献：
  名称：

  氧化NHC催化的亚氨基偶氮鎓的生成：苯并恶唑的合成

  摘要：

  提出了N-杂环卡宾（NHC）催化的由2-氨基苯酚和芳香醛生成的醛亚胺的分子内环化反应，该反应在温和条件下导致了2-芳基苯并恶唑的合成。反应是通过由亚胺和NHC生成aza- Breslow中间体而进行的，后者在氧化条件下形成了关键的亚胺基偶氮鎓，随后的分子内环化作用提供了产物。该反应可耐受各种官能团，并且通常以良好的收率形成产物。

  DOI：

  10.1021/acs.joc.8b02598

文献信息

• Synthesis of 2-substituted pyrimidines and benzoxazoles via a visible-light-driven organocatalytic aerobic oxidation: enhancement of the reaction rate and selectivity by a base
  作者：Lin Wang、Zhi-Gang Ma、Xiao-Jing Wei、Qing-Yuan Meng、Deng-Tao Yang、Shao-Fu Du、Zi-Fei Chen、Li-Zhu Wu、Qiang Liu

  DOI：10.1039/c4gc00337c

  日期：——

  An efficient visible-light-driven photocatalytic oxidation of various 2-substituted dihydropyrimidines and phenolic imines has been achieved using an organic photocatalyst eosin Y bis(tetrabutyl ammonium salt) (TBA-eosin Y) and inexpensive oxidant molecular oxygen. With the aid of a base, significantly enhanced photoinduced electron transfer from substrates dihydropyrimidines or phenolic imines to the excited state of TBA-eosin Y has enabled the aerobic oxidation to yield 2-(methylthio)pyrimidines or 2-arylbenzoxazoles selectively.

  利用有机光催化剂藻红Y双(四丁基铵盐)(TBA-藻红Y)和廉价氧化剂分子氧，已经实现了各种2-取代二氢嘧啶和酚亚胺的高效可见光驱动光催化氧化反应。在碱的辅助下，从底物二氢嘧啶或酚亚胺到TBA-藻红Y激发态的显著增强的光诱导电子转移，使得空气氧化能够选择性地生成2-(甲硫基)嘧啶或2-芳基苯并噁唑。
• Gold nanoparticles supported on titanium dioxide: an efficient catalyst for highly selective synthesis of benzoxazoles and benzimidazoles
  作者：Lin Tang、Xuefeng Guo、Yu Yang、Zhenggen Zha、Zhiyong Wang

  DOI：10.1039/c4cc01822b

  日期：——

  A highly efficient and selective reaction for the synthesis of 2-substituted benzoxazoles and benzimidazoles catalyzed by Au/TiO2 has been developed via two hydrogen-transfer processes. This reaction has a good tolerance to air and water, a wide substrate scope, and represents a new avenue for practical C-N and C-O bond formation. More importantly, no additional additives, oxidants and reductants are

  通过两个氢转移过程，开发了一种高效的，选择性的反应，用于由Au / TiO2催化合成2-取代的苯并恶唑和苯并咪唑。该反应对空气和水具有良好的耐受性，广泛的底物范围，并且代表了形成实用的CN和CO键的新途径。更重要的是，该反应不需要额外的添加剂，氧化剂和还原剂，并且催化剂可以容易地回收和再利用。
• Delivering 2-Aryl Benzoxazoles through Metal-Free and Redox-Neutral De-CF₃ Process
  作者：Xinxin Qiao、Yong-De Zhao、Mingru Rao、Zhan-Wei Bu、Guangwu Zhang、Heng-Ying Xiong

  DOI：10.1021/acs.joc.1c01619

  日期：2021.10.1

  demonstrated broad substrate scope and good compatibility of functional groups. 2-Aryl benzothiazole and 2-aryl benzoimidazole could be smoothly assembled in the same manner. On the basis of preliminary mechanistic studies, base initiated and aromatization driven β-carbon elimination was considered to be the key step for the formation of 2. This reaction offers an alternative, facile, and sustainable route to

  CF 3 -氢苯并恶唑的C sp3 -CF 3键的意外断裂已被公开，在无金属和氧化还原中性条件下提供了一系列2-芳基苯并恶唑。这种转变展示了广泛的底物范围和良好的官能团兼容性。2-芳基苯并噻唑和2-芳基苯并咪唑可以以相同的方式顺利组装。在初步机理研究的基础上，碱引发和芳构化驱动的 β-碳消除被认为是形成2的关键步骤。该反应为获取重要的 2-芳基苯并恶唑基序提供了一种替代、简便且可持续的途径。
• Ruthenium(II) Acetate Catalyzed Synthesis of Silylated Oxazoles via C–H Silylation and Dehalogenation
  作者：Shun Liu、Shiling Zhang、Qiao Lin、Yiqi Huang、Bin Li

  DOI：10.1021/acs.orglett.9b00085

  日期：2019.2.15

  efficient ruthenium(II)-catalyzed intermolecular selective ortho C–H silylation of 2-aryloxazoles has been described for the first time, which provides a convenient and practical pathway for the synthesis of versatile organosilane compounds with good functional group tolerance and regioselectivity. This catalytic system could be also applied to the dehalogenation of Cl or Br group.

  首次描述了有效的钌（II）催化的2-芳基恶唑的分子间选择性邻位甲硅烷基化硅烷化反应，为合成具有良好官能团耐受性和区域选择性的通用有机硅烷化合物提供了方便实用的途径。该催化体系也可用于Cl或Br基团的脱卤。
• The efficient o-benzenedisulfonimide catalysed synthesis of benzothiazoles, benzoxazoles and benzimidazoles
  作者：Margherita Barbero、Silvano Cadamuro、Stefano Dughera

  DOI：10.3998/ark.5550190.0013.923

  日期：——

  o-Benzenedisulfonimide has been used to efficiently catalyse the reaction between 2-aminothiophenol, 2-aminophenol, o-phenylenediamine and various ortho esters (28 examples; average yield 90%) or aldehydes (17 examples; average yield 72%) giving the corresponding benzofused azoles in excellent yields. Reaction conditions were very simple. In addition, other carboxylic acid derivatives have been tested

  邻苯二磺酰亚胺已被用于有效催化 2-氨基苯硫酚、2-氨基苯酚、邻苯二胺与各种原酸酯（28 个例子；平均收率 90%）或醛（17 个例子；平均收率 72%）之间的反应，得到相应的苯并稠合唑以优异的收率。反应条件非常简单。此外，还测试了其他羧酸衍生物并给出了良好的结果。催化剂很容易回收和再利用。