2-(2,4-dimethoxyphenyl)benzofuran | 62924-10-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 2-芳基苯并呋喃类黄酮
• 英文名称: 2-(2,4-dimethoxyphenyl)benzofuran
• 英文别名: 2-(2,4-Dimethoxyphenyl)-1-benzofuran
• CAS: 62924-10-1
• 化学式: C₁₆H₁₄O₃
• 分子量: 254.285
• InChiKey: FUFGUXSOYGKGKS-UHFFFAOYSA-N

物化性质

• 熔点：
  53 °C
• 沸点：
  367.3±32.0 °C(Predicted)
• 密度：
  1.157±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  31.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(2,4-dimethoxyphenyl)benzofuran 在 氧气 、 nitrosonium tetrafluoroborate 、 三氟乙酸 作用下， 以 乙腈 为溶剂， 反应 1.0h， 以83%的产率得到2,2'-bis(2,4-dimethoxyphenyl)-3,3'-bibenzofuran
  参考文献：
  名称：

  Aerobic, Metal-Free, and Catalytic Dehydrogenative Coupling of Heterocycles: En Route to Hedgehog Signaling Pathway Inhibitors

  摘要：

  The nitrosonium ion-catalyzed dehydrogenative coupling of heteroarenes under mild reaction conditions is reported. The developed method utilizes ambient molecular oxygen as a terminal oxidant, and only water is produced as byproduct. Dehydrogenative coupling of heteroarenes translated into the rapid discovery of novel hedgehog signaling pathway inhibitors, emphasizing the importance of the developed methodology.

  DOI：

  10.1021/acs.orglett.8b00521
• 作为产物：
  描述：

  苯氧基乙醛乙酸二乙酯 在 3,3-二甲基-1-丁烯 、 C₂₅H₄₀O₂P₂Ru 、 palladium diacetate 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 、 potassium hydroxide 作用下， 以 对二甲苯 、 甲苯 为溶剂， 反应 49.0h， 生成 2-(2,4-dimethoxyphenyl)benzofuran
  参考文献：
  名称：

  A Pincer Ruthenium Complex for Regioselective C–H Silylation of Heteroarenes

  摘要：

  A pincer Ru(II) catalyst for the highly efficient undirected silylation of O- and S-heteroarenes with (TMSO)(2)MeSiH and Et3SiH is described, producing heteroarylsilanes with exclusive C2-regioselectivity, good functional group tolerance, and high turnover numbers (up to 1960). The synthetic utility of the silylated products is demonstrated by Pd-catalyzed Hiyama-Denmark cross-coupling under mild conditions. One-pot, two-step silylation and coupling procedures have been also developed.

  DOI：

  10.1021/acs.orglett.6b02857

文献信息

• p-Toluenesulfonic acid-promoted selective functionalization of unsymmetrical arylalkynes: a regioselective access to various arylketones and heterocycles
  作者：Maud Jacubert、Olivier Provot、Jean-François Peyrat、Abdallah Hamze、Jean-Daniel Brion、Mouâd Alami

  DOI：10.1016/j.tet.2010.03.055

  日期：2010.5

  Regioselective hydration of a wide range of internal alkynes has been afforded in high to good yields by using PTSA in EtOH. The scope of the reaction of alkynes has been delineated. Arylaliphatic alkynes and diarylalkynes were regioselectively hydrated in good to excellent yields and short reaction times when the reaction was achieved under microwave irradiation. Moreover, diarylalkynes, arylenynes

  通过在EtOH中使用PTSA，可以实现高产率到良好产率的多种内部炔烃的区域选择性水合。已经描述了炔烃的反应范围。当在微波辐射下完成反应时，芳基脂族炔烃和二芳基炔烃以良好至优异的产率和短的反应时间进行区域选择性水合。而且，对在邻位带有甲氧基或硫代甲基取代基的二芳基炔，芳炔和二芳基二炔进行区域选择性5-内酯化。-dig-环化得到各种2-芳基-和2-苯乙烯基苯并呋喃或苯并噻吩衍生物。我们相信，这种新的无金属污染的环保方法与微波辐射相结合，对于绿色实验室规模的合成研究将非常重要。
• Acid-mediated intermolecular C–F/C–H cross-coupling of 2-fluorobenzofurans with arenes: synthesis of 2-arylbenzofurans
  作者：Takeshi Fujita、Ryutaro Morioka、Takuya Fukuda、Naoto Suzuki、Junji Ichikawa

  DOI：10.1039/d1cc03453g

  日期：——

  Transition-metal-free acid-promoted biaryl construction was achieved via intermolecular C–F/C–H cross-coupling. By treating 2-fluorobenzofurans with arenes and AlCl₃, 2-arylbenzofurans including a bioactive natural product were obtained.

  通过无过渡金属酸促进的分子间C-F/C-H交叉偶联实现了双芳基的构建。将2-氟苯并呋喃与芳烃和AlCl3处理后，得到了包括一种生物活性天然产物在内的2-芳基苯并呋喃。
• Synthesis and in vitro study of nitro- and methoxy-2-phenylbenzofurans as human monoamine oxidase inhibitors
  作者：Giovanna L. Delogu、Amit Kumar、Gianluca Gatto、Fernando Bustelo、Lucía M. Saavedra、Maria Isabel Rodríguez-Franco、Reyes Laguna、Dolores Viña

  DOI：10.1016/j.bioorg.2020.104616

  日期：2021.2

  A new series of 2-phenylbenzofuran derivatives were designed and synthesized to determine relevant structural features for the MAO inhibitory activity and selectivity. Methoxy substituents were introduced in the 2-phenyl ring, whereas the benzofuran moiety was not substituted or substituted at the positions 5 or 7 with a nitro group. Substitution patterns on both the phenyl ring and the benzofuran

  设计并合成了一系列新的 2-苯基苯并呋喃衍生物，以确定 MAO 抑制活性和选择性的相关结构特征。在 2-苯环中引入了甲氧基取代基，而苯并呋喃部分未被取代或在 5 或 7 位被硝基取代。苯环和苯并呋喃部分的取代模式决定了对 MAO-A 或 MAO-B 的亲和力。2-(3-甲氧基苯基)-5-硝基苯并呋喃9是该系列中最有效的 MAO-B 抑制剂 (IC 50  = 0.024 µM)，而 7-硝基-2-苯基苯并呋喃7是最有效的 MAO-A 抑制剂(IC 50 = 0.168 µM)，两者都作为可逆抑制剂。2-苯环上甲氧基的数量和位置对抑制活性有重要影响。分子对接研究证实了实验结果，并强调了关键残基在酶抑制中的重要性。
• Slow Release of Organoboronic Acids in Cross-Coupling Reactions
  申请人：Burke Martin D.

  公开号：US20100121062A1

  公开（公告）日：2010-05-13

  A method of performing a chemical reaction includes reacting a compound selected from the group consisting of an organohalide and an organo-pseudohalide, and a protected organoboronic acid represented by formula (I) in a reaction mixture: R 1 —B-T   (I); where R 1 represents an organic group, T represents a conformationally rigid protecting group, and B represents boron having sp 3 hybridization. When unprotected, the corresponding organoboronic acid is unstable by the boronic acid neat stability test. The reaction mixture further includes a base having a pK B of at least 1 and a palladium catalyst. The method further includes forming a cross-coupled product in the reaction mixture.

  一种化学反应的方法包括在反应混合物中反应从有机卤化物和有机伪卤化物中选择的化合物，以及由公式（I）表示的受保护的有机硼酸：R1—B-T  （I）;其中，R1表示有机基团，T表示构象刚性保护基团，B表示具有sp3杂化的硼。当未受保护时，相应的有机硼酸在硼酸稳定性测试中不稳定。反应混合物还包括具有至少1的pKB值和钯催化剂的碱。该方法还包括在反应混合物中形成交叉偶联产物。
• A novel base-promoted intramolecular cyclization approach for the synthesis of benzofurans, benzothiophenes and indoles
  作者：Qianqian Zhang、Hanyu Nie、Kun Zhang、He Huang、Chuanjun Song

  DOI：10.1016/j.tet.2022.132815

  日期：2022.6

  A facile transition-metal-free method for the synthesis of benzofuran was developed via potassium t-butoxide promoted intramolecular cyclization of o-bromobenzylketones. This method showed a wide range of substrate tolerability affording substituted benzofurans in moderate to good isolated yields. In addition, thio-ketones and imines could also be converted to corresponding benzothiophenes and indoles

  通过叔丁醇钾促进邻溴苄基酮的分子内环化，开发了一种简便的无过渡金属合成苯并呋喃的方法。该方法显示出广泛的底物耐受性，以中等至良好的分离产率提供取代的苯并呋喃。此外，应用这种方法，硫代酮和亚胺也可以转化为相应的苯并噻吩和吲哚。天然产物香豆雌酚的四步全合成进一步证明了该方法的实用性。