methyl 2-((4-fluorophenyl)ethynyl)benzoate | 1314961-08-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl 2-((4-fluorophenyl)ethynyl)benzoate
• CAS: 1314961-08-4
• 化学式: C₁₆H₁₁FO₂
• 分子量: 254.261
• InChiKey: VSXWGEXDPDELCA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.01
• 重原子数：
  19.0
• 可旋转键数：
  1.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  methyl 2-((4-fluorophenyl)ethynyl)benzoate 在 iron(III) chloride 作用下， 以 二氯甲烷 为溶剂， 以60%的产率得到3-(4-fluorophenyl)-1H-isochromen-1-one
  参考文献：
  名称：

  Regioselective Synthesis of Isochromenones by Iron(III)/PhSeSePh-Mediated Cyclization of 2-Alkynylaryl Esters

  摘要：

  A series of 4-Se-(Te, S)-isochromenones and 3-substituted isochromenones were synthesized in good yields via FeCl3-mediated cyclization of alkynylaryl esters with different diorganyl dichalcogenides. This methodology was carried out at room temperature, using inexpensive and environmentally friendly iron salts as metallic source and under air atmosphere. The reaction showed to be tolerant to a range of substituents bonded into the aromatic ring of the diorganyl dichalcogenides as well as to alkyl groups directly bonded to the chalcogen atom. Alternatively, the cyclization reaction of 2-alkynylaryl esters with FeCl3, in the absence of diorganyl dichalcogenide, gave the isochromenones without the chalcogen moiety in the structure. This approach proved to be highly regioselective, providing only six-membered ring products, once the possible five-membered products were not observed in any experiments.

  DOI：

  10.1021/jo201211s
• 作为产物：
  描述：

  2-碘苯甲酸 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 硫酸 、 三乙胺 作用下， 以 水 为溶剂， 反应 11.0h， 生成 methyl 2-((4-fluorophenyl)ethynyl)benzoate
  参考文献：
  名称：

  通过TMSCl催化的NCS诱导的2-炔基芳基酸酯的氯化环化反应，无金属合成4-氯异香豆素。

  摘要：

  4-氯异香豆素可方便地由2-炔基芳基酸酯通过亲电氯活化炔烃而制得，该亲电基氯在10 mol％三甲基甲硅烷基氯（TMSCl）存在下由N-氯代琥珀酰亚胺（NCS）原位生成，从而生成6-内-dig-selective氯化法制环，以中等到定量的产量获得所需的产品。该方法使用了容易获得的试剂，并且可以在温和的条件下（0°C至rt）在各种底物上方便地进行。此外，该反应可扩展用于克级制备4-氯异香豆素。另外，通过分别用N-溴代琥珀酰亚胺（NBS）和N-碘代琥珀酰亚胺（NIS）代替NCS，可以以中等至良好的产率制备4-溴-和4-碘异香豆素。

  DOI：

  10.1021/acs.joc.9b02793

文献信息

• Palladium(II)-catalyzed tandem annulation reaction of o-alkynylbenzoates with methyl vinyl ketone for the synthesis of isocoumarins
  作者：Huan Wang、Xiuling Han、Xiyan Lu

  DOI：10.1016/j.tet.2013.07.057

  日期：2013.10

  A palladium(II)-catalyzed highly regioselective tandem reactions of o-alkynylbenzoates with methyl vinyl ketone for the synthesis of isocoumarins was developed. It is a convenient, mild and environmentally benign reaction with moderate to high yield. The reaction is initiated by the Pd(II) species and regenerate the Pd(II) species to complete the catalytic cycle without the necessity of a redox system

  开发了钯（II）催化邻炔基苯甲酸酯与甲基乙烯基酮的高区域选择性串联反应，用于合成异香豆素。这是一种方便，温和且对环境有益的反应，产率中等至高。该反应由Pd（II）物种引发，并再生Pd（II）物种以完成催化循环，而无需氧化还原系统。
• Continuous Electrochemical Synthesis of Iso‐Coumarin Derivatives from <i>o</i> ‐(1‐Alkynyl) Benzoates under Metal‐ and Oxidant‐Free
  作者：Xinxin Lin、Zheng Fang、Cuilian Zeng、Chenlong Zhu、Xinyan Pang、Chengkou Liu、Wei He、Jindian Duan、Ning Qin、Kai Guo

  DOI：10.1002/chem.202001766

  日期：2020.10.27

  A non‐oxidant and metal‐free strategy for synthesizing iso‐coumarin by using a continuous electrochemical microreactor to initiate an oxidative cyclization reaction of o‐(1‐alkynyl) benzoate and radicals. This efficient and clean continuous electrosynthesis method not only avoids the complicated gas protection operation and production of by‐products in the batch processes, but also help to overcome

  通过使用连续电化学微反应器引发邻-（1-炔基）苯甲酸酯和自由基的氧化环化反应来合成异香豆素的非氧化剂和无金属策略。这种高效，清洁的连续电合成方法不仅避免了分批过程中复杂的气体保护操作和副产物的产生，而且还帮助克服了难于批量生产金属催化和电催化的规模扩大的难题，并具有潜在的应用前景。中试规模的实验。
• (Trifluoromethyl)thiolation of 2-Alkynylbenzoates: An Efficient Route to 4-[(Trifluoromethyl)thio]-1<i>H</i>-isochromen-1-ones
  作者：Yuewen Li、Guangming Li、Qiuping Ding

  DOI：10.1002/ejoc.201402629

  日期：2014.8

  The incorporation of the (trifluoromethyl)thio group into the isocoumarin scaffold through a Lewis-acid-mediated electrophilic cyclization reaction of 2-(2-alkynyl)benzoates with trifluoromethanesulfanylamide is reported. The transformation proceeds well in the presence of BiCl3 and BF3·Et2O under mild conditions to give 4-[(trifluoromethyl)thio]-1H-isochromen-1-ones regioselectively and in good yields

  据报道，通过路易斯酸介导的 2-(2-炔基) 苯甲酸酯与三氟甲磺酰胺的亲电环化反应，将 (三氟甲基) 硫基并入异香豆素支架中。在 BiCl3 和 BF3·Et2O 存在下，在温和条件下，转化进行得很好，以区域选择性和良好的产率得到 4-[(三氟甲基)硫代]-1H-isochromen-1-ones。
• Fe(III)‐Catalyzed, Cyclizative Coupling between 2‐Alkynylbenzoates and Carbinols: Rapid Generation of Polycyclic Isocoumarins and Phthalides and Mechanistic Study
  作者：Soniya Gandhi、Beeraiah Baire

  DOI：10.1002/adsc.202000313

  日期：2020.7.16

  catalyzed, highly regioselective cyclizative coupling of internal alkynes with alcohols has been reported for the rapid synthesis of structurally divergent, complex isocoumarins and phthalides respectively in intermolecular and intramolecular fashion. This strategy exhibited very high substrate scope and efficiency and proceeds through the simultaneous formation of C−O and C−C bonds. Observations from

  据报道，FeCl 3催化的内部炔烃与醇的高度区域选择性环化偶联可分别以分子间和分子内方式快速合成结构分歧，复杂的香豆素和邻苯二甲酸酯。该策略展示了很高的底物范围和效率，并且通过同时形成C-O和C-C键来进行。来自一系列对照实验的观察结果支持a）路易斯酸催化酯和醇的双重活化的机理，b）碳正离子化对提高环化速率的作用，即 例如，通过碳正离子活化炔烃，以及c）HCl在报道的级联过程中不起作用。
• Trifluoromethylthiolation/Selenolation and Lactonization of 2-Alkynylbenzoate: The Application of Benzyl Trifluoromethyl Sulfoxide/Selenium Sulfoxides as SCF₃/SeCF₃ Reagents
  作者：Haofeng Shi、Xingzong Wang、Xiaoxian Li、Beibei Zhang、Xuemin Li、Jingran Zhang、Jingyue Yang、Yunfei Du

  DOI：10.1021/acs.orglett.2c00563

  日期：2022.3.25

  The combined use of BnS(O)CF3/BnSe(O)CF3 with Tf2O as SCF3/SeCF3 reagents was implemented to realize an efficient synthesis of biologically interesting 4-(trifluoromethylthio/trifluoromethylseleno)isocoumarins from 2-alkynylbenzoates. The mechanistic pathway was postulated to involve formation of the electrophilic SCF3/SeCF3 species via interrupted Pummerer reactions followed by a concerted triflu

  实施了BnS(O)CF 3 /BnSe(O)CF 3与Tf 2 O作为SCF 3 /SeCF 3试剂的联合使用，以实现从2-炔基苯甲酸酯高效合成具有生物学意义的4-(三氟甲硫基/三氟甲基硒)异香豆素. 假定机制途径涉及通过中断的Pummerer反应形成亲电SCF 3 /SeCF 3物质，然后是协同的三氟甲基硫醇化/硒化和内酯化过程。