4-methoxyphenyl 1H-imidazole-1-sulfonate | 1139705-25-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 4-methoxyphenyl 1H-imidazole-1-sulfonate
• 英文别名: (4-Methoxyphenyl) imidazole-1-sulfonate
• CAS: 1139705-25-1
• 化学式: C₁₀H₁₀N₂O₄S
• 分子量: 254.266
• InChiKey: PPAOPYNHSBBOQK-UHFFFAOYSA-N

物化性质

• 沸点：
  440.3±47.0 °C(Predicted)
• 密度：
  1.37±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  78.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  4-methoxyphenyl 1H-imidazole-1-sulfonate 在 caesium carbonate 作用下， 以 乙醚 、 2,2,2-三氟乙醇 、 丙酮 为溶剂， 反应 26.0h， 生成 1-己-1-炔基-4-甲氧基苯
  参考文献：
  名称：

  Aryl Imidazylates and Aryl Sulfates As Electrophiles in Metal-Free ArS_N1 Reactions

  摘要：

  Some oxygen-bonded substituents were investigated as leaving groups in photoinduced ArSN1 reactions. Irradiation of aryl imidazylates and of the corresponding imidazolium salts mainly caused homolysis of the ArO-S bond. However, previously unexplored trifluoroethoxy aryl sulfates were found to undergo efficient metal-free arylation. The sulfates were conveniently generated in situ by dissolving the corresponding imidazolium salts in basic 2,2,2-trifluoroethanol.

  DOI：

  10.1021/jo502172c
• 作为产物：
  描述：

  1-咪唑磺酸 、 4-甲氧基苯酚 在 caesium carbonate 作用下， 以 四氢呋喃 为溶剂， 反应 16.0h， 以88%的产率得到4-methoxyphenyl 1H-imidazole-1-sulfonate
  参考文献：
  名称：

  Aryl Imidazylates and Aryl Sulfates As Electrophiles in Metal-Free ArS_N1 Reactions

  摘要：

  Some oxygen-bonded substituents were investigated as leaving groups in photoinduced ArSN1 reactions. Irradiation of aryl imidazylates and of the corresponding imidazolium salts mainly caused homolysis of the ArO-S bond. However, previously unexplored trifluoroethoxy aryl sulfates were found to undergo efficient metal-free arylation. The sulfates were conveniently generated in situ by dissolving the corresponding imidazolium salts in basic 2,2,2-trifluoroethanol.

  DOI：

  10.1021/jo502172c

文献信息

• Palladium- and Nickel-Catalyzed Aminations of Aryl Imidazolylsulfonates and Sulfamates
  作者：Lutz Ackermann、René Sandmann、Weifeng Song

  DOI：10.1021/ol200267b

  日期：2011.4.1

  A nickel complex derived from dppf, along with NaOt-Bu as the base, allowed for challenging aminations of aryl sulfamates. An improved functional group tolerance is observed in novel palladium-catalyzed aminations of imidazolylsulfonates with rac-BINAP as the ligand.

  衍生自dppf的镍络合物以及NaO t -Bu作为碱，可实现富挑战性的氨基磺酸氨基酯的胺化反应。以rac -BINAP为配体的新型钯催化的咪唑基磺酸盐胺化反应观察到官能团耐受性提高。
• Synthesis of ¹⁸F-Labeled Aryl Fluorosulfates via Nucleophilic Radiofluorination
  作者：Young-Do Kwon、Min Ho Jeon、Nam Kyu Park、Jeong Kon Seo、Jeongmin Son、Young Hoon Ryu、Sung You Hong、Joong-Hyun Chun

  DOI：10.1021/acs.orglett.0c01868

  日期：2020.7.17

  first SO2F2-free synthesis of aryl [18F]fluorosulfates from both phenolic and isolated aryl imidazylate precursors with cyclotron-produced 18F–. The radiochemical yields ranged from moderate to good with excellent functional group tolerance. The reliability of our approach was validated by the automated radiosynthesis of 4-acetamidophenyl [18F]fluorosulfate.

  硫酰氟气体是SO 2 F转移的关键试剂。然而，由于无法获得气态[ 18 F] SO 2 F 2，传统的SO 2 F转移反应具有局限性的18 F-放射化学转化。在此，我们报告了使用回旋加速器生产的18 F –酚和分离的芳基亚氨基磺酸酯前体，首次合成无SO 2 F 2的芳基[ 18 F]氟代硫酸盐–。放射化学收率范围从中等到良好，且具有出色的官能团耐受性。我们的方法的可靠性通过4-乙酰氨基苯基[ 18 F]氟硫酸盐的自动放射合成得到了验证。
• Palladium-Catalyzed Mono-α-Arylation of Acetone with Aryl Imidazolylsulfonates
  作者：Lutz Ackermann、Vaibhav P. Mehta

  DOI：10.1002/chem.201201394

  日期：2012.8.13

  Set the ace(tone): A palladium catalyst derived from the bidentate XantPhos ligand and Pd(OAc)2 has enabled broadly applicable mono‐α‐arylations of acetone to be performed with air‐ and moisture‐stable aryl imidazolylsulfonates as most user‐friendly electrophiles (see scheme).

  设定ace（tone）：一种由双齿XantPhos配体和Pd（OAc）2衍生的钯催化剂，使得最广泛使用的丙酮单α-芳基化反应可以与空气和水分稳定的芳基咪唑基磺酸盐一起使用，这是最易于使用的亲电试剂（请参阅方案）。
• Oxime-Palladacycle-Catalyzed Suzuki-Miyaura Arylation and Alkenylation of Aryl Imidazolesulfonates under Aqueous and Phosphane-Free Conditions
  作者：José Francisco Cívicos、Diego A. Alonso、Carmen Nájera

  DOI：10.1002/ejoc.201200368

  日期：2012.7

  Aryl and hetaroaryl imidazole-1-sulfonates are efficiently arylated and alkenylated with aryl- and alkenylboronic acids and potassium trifluoroborates by using 0.5 mol-% palladacycles 1 or Pd(OAc)2 at 110 °C under aqueous and phosphane-free conditions. Reactions can be performed by using conventional or microwave heating, leading to biaryls, stilbenes, and alkenylarenes in good to high yields, and

  芳基和杂芳基咪唑-1-磺酸盐通过使用 0.5 mol% 钯环 1 或 Pd(OAc)2 在 110 °C 下，在水性和无磷烷条件下，被芳基和烯基硼酸以及三氟硼酸钾有效地芳基化和烯基化。反应可以通过使用常规或微波加热进行，从而以良好到高产率以及高区域选择性和非对映选择性产生联芳烃、芪和烯基芳烃。优化的方法允许原位苯酚磺酰化和一锅 Suzuki 芳基化或烯基化以及含卤素芳基咪唑磺酸盐的正交功能化。
• Sulfonate Versus Sulfonate: Nickel and Palladium Multimetallic Cross-Electrophile Coupling of Aryl Triflates with Aryl Tosylates
  作者：Kai Kang、Liangbin Huang、Daniel J. Weix

  DOI：10.1021/jacs.0c04670

  日期：2020.6.17

  While phenols are frequent and convenient aryl sources in cross-coupling, typically as sulfonate esters, the direct cross-Ullmann coupling of two different sulfonate esters is unknown. We report here a general solution to this chal-lenge catalyzed by a combination of Ni and Pd with Zn reductant and LiBr as an additive. The reaction has broad scope, as demonstrated in 33 examples (65% ± 11% ave yield)

  虽然苯酚是交叉偶联中常见且方便的芳基来源，通常作为磺酸酯，但两种不同磺酸酯的直接交叉乌尔曼偶联尚不清楚。我们在此报告了针对这一挑战的通用解决方案，该解决方案由 Ni 和 Pd 与 Zn 还原剂和 LiBr 作为添加剂的组合催化。该反应具有广泛的范围，如 33 个实例所示（平均产率 65% ± 11%）。机理研究表明，Pd 强烈偏好三氟甲磺酸芳基酯，Ni 催化剂对甲苯磺酸芳基酯的偏好较小，催化剂之间的芳基转移由 Zn 介导，Pd 通过消耗芳基锌中间体来提高产率。