ethyl thiophene-3-carbimidate | 54610-67-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: ethyl thiophene-3-carbimidate
• 英文别名: Ethyl thiophene-3-carboximidate
• CAS: 54610-67-2
• 化学式: C₇H₉NOS
• 分子量: 155.221
• InChiKey: UTAKMCMDVDNYRM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  61.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  ethyl thiophene-3-carbimidate 在 selenium 、 tris(acetonitrile)(η5-pentamethylcyclopentadienyl)rhodium(III) hexafluoroantimonate 、 silver(I) acetate 作用下， 反应 7.0h， 以81%的产率得到3-ethoxythieno[3,2-d]isoselenazole
  参考文献：
  名称：

  Synthesis of Isothiazoles and Isoselenazoles through Rhodium-Catalyzed Oxidative Annulation with Elemental Sulfur and Selenium

  摘要：

  A rhodium-catalyzed oxidative annulation of benzimidates with elemental sulfur for the direct construction of isothiazole rings is reported. The proposed reaction mechanism involving Rh(I)/Rh(III) redox is supported by a stoichiometric reaction of metallacycle species as well as DFT calculations. This method is also applicable to selenium cyclization to produce isoselenazole derivatives. The alkoxy substituent at C3 can be used for further functionalization of the azole core.

  DOI：

  10.1021/acs.orglett.0c03674
• 作为产物：
  描述：

  3-氰基噻吩 生成 ethyl thiophene-3-carbimidate
  参考文献：
  名称：

  Absorption Spectra and Structure of Some Tetrazoles

  摘要：

  DOI：

  10.1021/ja01164a017

文献信息

• Cobalt-Catalyzed Oxidant-Free Spirocycle Synthesis by Liberation of Hydrogen
  作者：Ningning Lv、Yue Liu、Chunhua Xiong、Zhanxiang Liu、Yuhong Zhang

  DOI：10.1021/acs.orglett.7b02266

  日期：2017.9.1

  The first example of oxidant-free cobalt-catalyzed synthesis of five-membered spirocycles is reported from benzimidates and maleimides utilizing nitrobenzene as promoter. In contrast to previously known cobalt-catalyzed oxidative C–H functionalization reactions, this transformation occurs efficiently in the absence of oxidant and is accompanied by liberation of hydrogen. The spiro-lactams were readily

  利用硝基苯作为促进剂的苯甲酰亚胺盐和马来酰亚胺报道了五元螺环的无氧化剂钴催化合成的第一个例子。与以前已知的钴催化的氧化C–H官能化反应相反，这种转变在不存在氧化剂的情况下有效地发生，并伴随着氢的释放。螺内酰胺很容易通过水解制备的螺环化合物而获得。Cp * Rh（III）催化剂显示出较差的反应性。
• Redox‐Neutral Manganese(I)‐Catalyzed C−H Activation: Traceless Directing Group Enabled Regioselective Annulation
  作者：Qingquan Lu、Steffen Greßies、Sara Cembellín、Felix J. R. Klauck、Constantin G. Daniliuc、Frank Glorius

  DOI：10.1002/anie.201707396

  日期：2017.10.2

  groups (TDGs) are used to promote the redox‐neutral MnI‐catalyzed regioselective synthesis of N‐heterocycles. Alkyne coupling partners bearing a traceless directing group, which serves as both the chelator and internal oxidant, were used to control the regioselectivity of the annulation reactions. This operationally simple approach is highly effective with previously challenging unsymmetrical alkyne

  报道了一种策略，其中使用无痕导向基团（TDG）来促进N杂环的氧化还原中性Mn I催化的区域选择性合成。带有无痕导向基团的炔烃偶合体既可作为螯合剂，又可作为内部氧化剂，用于控制环化反应的区域选择性。这种操作简单的方法对于以前具有挑战性的不对称炔烃系统（包括无偏二烷基炔烃）具有很好的区域选择性，非常有效。简单的条件和以克为单位进行合成的能力突显了该方法的实用性。还描述了该策略在生物活性化合物PK11209和药物莫西维林的简明合成中的应用。
• Overcoming the Limitations of C−H Activation with Strongly Coordinating N-Heterocycles by Cobalt Catalysis
  作者：Hui Wang、Mélanie M. Lorion、Lutz Ackermann

  DOI：10.1002/anie.201603260

  日期：2016.8.22

  Strongly coordinating nitrogen heterocycles, including pyrimidines, oxazolines, pyrazoles, and pyridines, were fully tolerated in cobalt‐catalyzed C−H amidations by imidate assistance. Structurally complex quinazolines are thus accessible in a step‐economic manner. Our findings also establish the relative powers of directing groups in cobalt(III)‐catalyzed C−H functionalization for the first time.

  在钴催化的CHH酰胺化反应中，通过亚氨酸盐的辅助作用，可以完全耐受包括嘧啶，恶唑啉，吡唑和吡啶在内的强配位氮杂环。因此，结构经济的喹唑啉可以逐步经济地获得。我们的发现还首次确定了钴（II​​I）催化的CH官能团中的导向基团的相对能力。
• One-Pot Synthesis of 3-Aryl-5-amino-1,2,4-thiadiazoles from Imidates and Thioureas by I₂ -Mediated Oxidative Construction of the N-S Bond
  作者：Ling Chai、Zhenzhen Lai、Qiangqiang Xia、Jiangpei Yuan、Qilong Bian、Mingjian Yu、Wenkai Zhang、Yuanqing Xu、Hao Xu

  DOI：10.1002/ejoc.201800670

  日期：2018.8.23

  A simple and practical method for the one‐pot synthesis of 3‐aryl‐5‐amino‐1,2,4‐thiadiazoles from imidates and thioureas has been developed. The protocol proceeds through sequential base‐mediated nucleophilic addition‐elimination reactions and an I2‐mediated oxidative coupling for the N–S bond formation.

  已开发出一种简单实用的方法，可从酰亚胺和硫脲单锅合成3-芳基-5-氨基-1，2，4-噻二唑。该方案通过顺序的碱基介导的亲核加成消除反应和N 2 S键形成的I 2介导的氧化偶联进行。
• A Comparative Investigation: Group 9 Cp*M(III)-Catalyzed Formal [4 + 2] Cycloaddition as an Atom-Economic Approach to Quinazolines
  作者：Xiaoming Wang、Andreas Lerchen、Frank Glorius

  DOI：10.1021/acs.orglett.6b00716

  日期：2016.5.6

  A comparative study on the catalytic activity of different group 9 [Cp*M(III)] complexes in the formal [4 + 2] cycloaddition of arenes with rarely explored free imines and dioxazolones for the construction of multisubstituted quinazolines is reported herein. This investigation revealed that the cobalt catalyst is uniquely suited to this transformation due to its strong Lewis acidity and high sensitivity

  本文报道了在芳烃的正式[4 + 2]环加成反应中稀有的游离亚胺和二恶唑酮对不同的9族[Cp * M（III）]配合物的催化活性的比较研究，用于构建多取代的喹唑啉。这项研究表明，钴催化剂具有很强的路易斯酸度和对位阻的高敏感性，因此特别适合这种转化。