5-苯并噁唑甲酸乙酯 | 1404370-64-4

• 物质功能分类: 化学试剂 - 有机试剂 - 酯类
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶唑类
• 中文名称: 5-苯并噁唑甲酸乙酯
• 英文名称: benzo[d]oxazole
• 英文别名: Ethyl 5-Benzoxazolecarboxylate；ethyl 1,3-benzoxazole-5-carboxylate
• CAS: 1404370-64-4
• 化学式: C₁₀H₉NO₃
• 分子量: 191.186
• InChiKey: NYONLFVSTRIQFN-UHFFFAOYSA-N

物化性质

• 沸点：
  287.1±13.0 °C(Predicted)
• 密度：
  1.241±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  52.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  5-苯并噁唑甲酸乙酯 、 二甲胺基磺酰氯 在 potassium dichromate 、 (2,2-联吡啶)二氯钯(II) 、 copper(l) cyanide 、 potassium carbonate 作用下， 以 氯苯 为溶剂， 反应 24.0h， 以80%的产率得到ethyl 2-(dimethylamino)benzo[d]oxazole-5-carboxylate
  参考文献：
  名称：

  Palladium–copper-catalyzed desulfitative amination of benzo[d]oxazole C–H bond

  摘要：

  An efficient palladium-copper-catalyzed direct C-H amination of substituted benzoxazoles with various sulfamoyl chlorides as nitrogen group sources has been developed. The system does not need a strong base and tolerates a series of functional groups, such as chloro, methyl, and nitro groups, providing the amination products in moderate to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2012.09.044

文献信息

• Copper-Catalyzed Electrophilic Amination of Benzoxazoles via Magnesation
  作者：Sangback Lee、Yunmi Lee

  DOI：10.1002/ejoc.201900335

  日期：2019.5.26

  A mild and efficient method for the synthesis of 2‐aminobenzoxazoles through a Cu‐catalyzed electrophilic amination of benzoxazole derivatives with O‐benzoyl hydroxylamines by direct magnesation has been developed.

  已经开发了一种温和有效的方法，该方法通过直接氧化反应，通过邻苯二甲酰基衍生物与邻苯二甲酰基羟胺的铜催化亲电胺化反应合成2-氨基苯并恶唑。
• The palladium-catalyzed tandem decarboxylation, carbon–carbon triple bond oxidation and decarbonylative arylation of the benzoxazole C–H bond
  作者：Dongfang Liu、Bin Liu、Jiang Cheng

  DOI：10.1039/c3ra41185k

  日期：——

  A palladium-catalyzed arylation of benzoxazole has been developed. This protocol involves the tandem decarboxylation and oxidation of a carbon–carbon triple bond followed by decarbonylative arylation of the benzoxazole C–H bond.

  开发了一种钯催化的苯并恶唑芳基化反应。该方案涉及碳-碳三键的串联脱羧和氧化，随后是苯并恶唑C-H键的脱羰基芳基化。
• Unexpected TFA-catalyzed tandem reaction of benzo[d]oxazoles with 2-oxo-2-arylacetic acids: synthesis of 3-aryl-2H-benzo[b][1,4]oxazin-2-ones and cephalandole A
  作者：Shaoxi Yan、Leping Ye、Miaochang Liu、Jiuxi Chen、Jinchang Ding、Wenxia Gao、Xiaobo Huang、Huayue Wu

  DOI：10.1039/c4ra01605j

  日期：——

  TFA-catalyzed reaction of benzo[d]oxazoles with 2-oxo-2-arylacetic acids: synthesis of 3-aryl-2H-benzo[b][1,4]oxazin-2-ones and the natural product cephalandole A.

  TFA催化的苯并[d]噁唑与2-氧代-2-芳基乙酸的反应：3-芳基-2H-苯并[b][1,4]噁唑-2-酮和天然产物头脑醇A的合成。
• Base-Promoted Formal Arylation of Benzo[<i>d</i>]oxazoles with Acyl Chloride
  作者：Lei Wang、Xinyi Ren、Jintao Yu、Yan Jiang、Jiang Cheng

  DOI：10.1021/jo402106q

  日期：2013.12.6

  A base-promoted formal arylation of benzo[d]-oxazoles with acyl chloride was achieved in moderate to good yields. This reaction was triggered by the N-acylation of oxazole to form an iminium intermediate. Then, the addition of H2O to the iminium formed the hemiacetal intermediate. After the sequential ring-opening, extrusion of CO, the ring closure, the dehydration delivered the formal arylation product. In comparison with the transition-metal-catalyzed methodology, it represents an alternative arylation method leading to 2-arylbenzooxazole.
• US3977882A
  申请人：——

  公开号：US3977882A

  公开（公告）日：1976-08-31