benzoxazol-2-yl(3-nitrophenyl)methanone | 1327274-42-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: benzoxazol-2-yl(3-nitrophenyl)methanone
• 英文别名: 1,3-Benzoxazol-2-yl-(3-nitrophenyl)methanone；1,3-benzoxazol-2-yl-(3-nitrophenyl)methanone
• CAS: 1327274-42-9
• 化学式: C₁₄H₈N₂O₄
• 分子量: 268.229
• InChiKey: OXPADJUABKLPBM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  20
• 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：
  88.9
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  1-(2,2-dibromovinyl)-3-nitrobenzene 在 ruthenium trichloride 、 四丁基氟化铵 、 氧气 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 10.0h， 生成 benzoxazol-2-yl(3-nitrophenyl)methanone
  参考文献：
  名称：

  Synthesis of heteroaryl ketones via tandem reaction of 1,1-dibromoethenes

  摘要：

  A novel method for the synthesis of heteroaryl ketones through one-pot tandem reaction of 1,1-dibromoethenes with 2-amino(thio)phenols promoted by TBAF center dot 3H(2)O and RuCl3(5%)/air was developed. This novel method includes several reactions in one-pot and utilizes economical yet efficient reagents to generate synthetically and biologically interesting heteroaryl ketones under mild conditions with good efficiency. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.05.111

文献信息

• Fe/S-Catalyzed synthesis of 2-benzoylbenzoxazoles and 2-quinolylbenzoxazoles <i>via</i> redox condensation of <i>o</i>-nitrophenols with acetophenones and methylquinolines
  作者：Le Anh Nguyen、Thi Thu Tram Nguyen、Quoc Anh Ngo、Thanh Binh Nguyen

  DOI：10.1039/d1ob00976a

  日期：——

  An Fe/S catalyst generated in situ from FeCl2·4H2O and elemental sulfur S8 in the presence of a tertiary amine as a base was found to catalyze efficiently a 6e− redox condensation of o-nitrophenols with acetophenones and methylquinolines. The condensed products 2-benzoylbenzoxazoles and 2-quinolylbenzoxazoles were obtained in reasonable yields with water as the only byproduct at a temperature as low

  发现在叔胺作为碱存在下由 FeCl 2 ·4H 2 O 和元素硫 S 8原位生成的 Fe/S 催化剂可有效催化邻硝基苯酚与苯乙酮和甲基喹啉的 6e -氧化还原缩合反应。缩合产物 2-苯甲酰基苯并恶唑和 2-喹啉基苯并恶唑在低至 80 °C 的温度下以合理的收率获得，水作为唯一的副产物。
• Break‐and‐Build Strategy for the Synthesis of 2‐Benzoylbenzoxazoles from <i>o</i> ‐Aminophenols and Acetophenones
  作者：Le Anh Nguyen、Quoc Anh Ngo、Pascal Retailleau、Thanh Binh Nguyen

  DOI：10.1002/adsc.202100150

  日期：2021.4.13

  required substrates bearing activating groups. Herein, we report an efficient method for the synthesis of such compounds by direct reactions of o‐aminophenols with acetophenones promoted by sulfur in DMSO. The reaction was found to proceed via a Willgerodt rearrangement‐type benzoxazolation of acetophenones followed by a benzylic oxidation to reinstall the carbonyl function. This method has a broad

  尽管具有2-苯甲酰基苯并恶唑基序的化合物具有生物学相关性，但合成它们的方法很少，大多数方法依赖于多步法或所需的带有活化基团的底物。本文中，我们报道了一种通过邻氨基酚与DMSO中硫促进的苯乙酮直接反应合成此类化合物的有效方法。发现该反应是通过苯乙酮的Willgerodt重排型苯并恶唑化反应进行的，然后进行苄基氧化以重新安装羰基官能团。该方法具有广泛的底物范围，并且对敏感的官能团具有良好的耐受性。
• A Sustainable Synthesis of 2-Benzoxazyl and 2-Benzothiazyl Ketones from Alkynyl Bromides and 2-Amino(thio)phenols Promoted by a Recyclable Catalytic System
  作者：Liangyan Cui、Yan He、Xuesen Fan

  DOI：10.1002/cjoc.201100472

  日期：2012.4

  An environmentally and economically sustainable synthesis of 2‐benzoxazyl ketones and 2‐benzothiazyl ketones through FeCl3·6H2O catalyzed tandem reactions of alkynyl bromides with 2‐amino(thio)phenols in [bmim]BF4 has been developed. Remarkable advantages of this new synthetic strategy include high efficiency, readily available starting materials, and recyclable catalyst and reaction medium.

  通过FeCl 3 ·6H 2 O催化炔基溴化物与2-氨基（硫代）苯酚在[bmim] BF 4中的串联反应，在环境和经济上可持续地合成2-苯并恶唑酮和2-苯并噻唑酮。这种新的合成策略的显着优势包括高效，易于获得的原料以及可循环使用的催化剂和反应介质。
• Palladium(II)/<i>N</i>-Heterocyclic Carbene-Catalyzed Direct C–H Acylation of Heteroarenes with <i>N</i>-Acylsaccharins
  作者：Shanmugam Karthik、Thirumanavelan Gandhi

  DOI：10.1021/acs.orglett.7b02877

  日期：2017.10.6

  N-Acylsaccharin represents a facile acyl group transfer agent to heteroarenes in the presence of Pd(II)/NHC complexes appended with a pyrene unit. Catalytic acylation of heteroarenes was enhanced by the noncovalent interaction between the pyrene unit and substrates. High functional group tolerance, broad substrate scope, and moderate to good yields of 2-acylated azoles are added features of this method

  N-酰基糖精代表在附有pyr单元的Pd（II）/ NHC络合物存在下向杂芳烃的简便酰基转移剂。are单元和底物之间的非共价相互作用增强了杂芳烃的催化酰化作用。高官能团耐受性，宽泛的底物范围以及中等至良好的2-酰化吡咯收率是该方法的特色。
• Synthesis of heteroaryl ketones via tandem reaction of 1,1-dibromoethenes
  作者：Xuesen Fan、Yan He、Xinying Zhang、Shenghai Guo、Yangyang Wang

  DOI：10.1016/j.tet.2011.05.111

  日期：2011.8

  A novel method for the synthesis of heteroaryl ketones through one-pot tandem reaction of 1,1-dibromoethenes with 2-amino(thio)phenols promoted by TBAF center dot 3H(2)O and RuCl3(5%)/air was developed. This novel method includes several reactions in one-pot and utilizes economical yet efficient reagents to generate synthetically and biologically interesting heteroaryl ketones under mild conditions with good efficiency. (C) 2011 Elsevier Ltd. All rights reserved.