4-甲基-2-(2-苯基乙炔基)苯酚 | 122778-92-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 中文名称: 4-甲基-2-(2-苯基乙炔基)苯酚
• 英文名称: 4-methyl-2-(phenylethynyl)phenol
• 英文别名: 4-methyl-2-(2-phenylethynyl)phenol
• CAS: 122778-92-1
• 化学式: C₁₅H₁₂O
• 分子量: 208.26
• InChiKey: QGFBMXDGHLMIEH-UHFFFAOYSA-N

物化性质

• 熔点：
  67-68 °C(Solv: ethanol (64-17-5))
• 沸点：
  364.4±35.0 °C(Predicted)
• 密度：
  1.15±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  4-甲基-2-(2-苯基乙炔基)苯酚 在 indium (III) iodide 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 16.0h， 以96%的产率得到5-methyl-2-phenylbenzofuran
  参考文献：
  名称：

  铟（III）催化的邻炔烷基苯酚分子内加氢烷氧基化合成苯并[ b ]呋喃：范围和机理的见解

  摘要：

  卤化铟（III）催化邻炔基苯酚的加氢烷氧基化反应，以高收率提供苯并[ b ]呋喃。反应的进行与5-内切-挖区域选择性与各种在芳烃官能酚类和以高产率使用的InI炔基部分3在DCE（5摩尔％）。实验和计算研究支持了基于炔烃的铟（III）π-路易斯酸活化，然后进行苯酚的亲核加成和最终的原金属脱金属，得到相应的苯并[ b ]呋喃的机理。DFT计算表明二聚体In 2 I 6 是通过与炔烃和羟基的新型双配位而催化的物质。

  DOI：

  10.1021/acs.joc.8b00829
• 作为产物：
  描述：

  [4-Methyl-2-(2-phenylethynyl)phenyl] acetate 在 盐酸 作用下， 以 水 、 丙酮 为溶剂， 反应 16.0h， 以88%的产率得到4-甲基-2-(2-苯基乙炔基)苯酚
  参考文献：
  名称：

  Palladium-Catalyzed Reaction of o-Ethynylphenols, o-((Trimethylsilyl)ethynyl)phenyl Acetates, and o-Alkynylphenols with Unsaturated Triflates or Halides:  A Route to 2-Substituted-, 2,3-Disubstituted-, and 2-Substituted-3-acylbenzo[b]furans

  摘要：

  The reaction of o-ethynylphenols 3 with a wide variety of unsaturated halides or triflates 6 in the presence of Pd(OAc)(2)(PPh(3))(2), CuI, and Et(3)N (procedure A) gives 2-vinyl- and 2-arylbenzo[b]furans 7, in good to high yield, through a palladium-catalyzed coupling followed by an in situ cyclization step. Small amounts of 2,3-disubstituted-benzo[b]furans 8 are usually isolated as side products. In some cases, however, compounds 8 are generated in significant yield or even as the main products. The formation of 8 can be prevented by employing alternative procedures (B and C) that use o-((trimethylsilyl)ethynyl)phenyl acetates 5 as starting building blocks. Procedure B is based on the palladium-catalyzed reaction of 5 with 6 in the presence of Pd(PPh(3))(4), Et(3)N, and n-Bu(4)NF, followed by the hydrolysis of the resultant coupling derivative 12 under basic conditions. Procedure C affords 7 through an in situ coupling/cyclization of 5 with 6 in the presence of Pd(PPh(3))(4) and KOBu(t). The utilization of o-alkynylphenols 9 as the starting alkynes in the palladium-catalyzed reaction with 6 leads to the formation of 2,3-disubstituted-benzo[b]furans 13 through an annulation process promoted by sigma-vinyl- and sigma-arylpalladium complexes generated in situ. The best results in this case are obtained by using KOAc and Pd(PPh(3))(4). In the presence of KOAc and Pd(PPh(3))(4), and under an atmosphere of carbon monoxide, the reaction of o-alkynylphenols with 6 provides 2-vinyl- and 2-aryl-3-acylbenzo[b]furans 14.

  DOI：

  10.1021/jo961051a

文献信息

• Zinc-catalyzed regioselective C–P coupling of <i>p</i>-quinol ethers with secondary phosphine oxides to afford 2-phosphinylphenols
  作者：Ming Zhang、Xiaoyu Jia、Haowei Zhu、Xutong Fang、Chenyi Ji、Sizhuo Zhao、Li-Biao Han、Ruwei Shen

  DOI：10.1039/c9ob00129h

  日期：——

  regioselective C–P cross coupling reaction of p-quinol ethers with secondary phosphine oxides is reported. The reaction provides a facile alternative method for the synthesis of 2-phosphinylphenols in good to high yields. Mechanistically, zinc triflate may serve as an oxophilic σ-Lewis acid to activate the C–O bond in p-quinol ether first. Then the regioselective attack of the phosphorus nucleophile at the α-carbon

  据报道，三氟甲磺酸锌催化对苯二酚醚与仲氧化膦的高度区域选择性C–P交叉偶联反应。该反应为以高产率到高产率合成2-次膦酰基苯酚提供了一种简便的替代方法。机械地，三氟甲磺酸锌可以用作亲氧性σ的路易斯酸来激活在C-O键p -quinol醚第一。然后，磷亲核体在α-碳位置发生区域选择性攻击，形成C–P键并生成产物。另外，在锌催化剂的存在下，α-炔基取代的对苯二酚醚也以相同的反应模式与仲膦氧化物反应，得到6-炔基2-膦基苯酚。
• Metal-Free Radical Annulation of Oxygen-Containing 1,7-Enynes: Configuration-Selective Synthesis of (<i>E</i>)-3-((Arylsulfonyl)methyl)-4-Substituted Arylidenechromene Derivatives
  作者：Kaimin Mao、Mouwang Bian、Lei Dai、Jinghang Zhang、Qiuyu Yu、Chang Wang、Liangce Rong

  DOI：10.1021/acs.orglett.0c03946

  日期：2021.1.1

  A novel strategy for the synthesis of (E)-3-((arylsulfonyl)methyl)-4-substituted benzylidenechromene derivatives via a metal-free radical annulation reaction of oxygen-containing 1,7-enynes with thiosulfonates has been developed. The reaction shows broad substrate scope, wide functional group tolerance, and moderate to excellent yields. Moreover, thiosulfonates were well driven to achieve the bifunctionalization

  通过含氧的1,7-烯炔与硫代磺酸盐的金属自由基环合反应，开发了一种新的策略来合成（E）-3-（（芳基磺酰基）甲基）-4-取代的亚苄基亚甲基衍生物。该反应显示出宽的底物范围，宽的官能团耐受性和中等至优异的产率。此外，硫代磺酸盐被很好地驱动以实现衍生自脂族炔烃的oxo-1,7-烯炔的双官能化反应。另外，产物的（E）-构型由1，7-烯炔的结构高度控制。
• Silver-catalyzed synthesis of 4-substituted benzofurans<i>via</i> a cascade oxidative coupling-annulation protocol
  作者：Yang Ye、Renhua Fan

  DOI：10.1039/c1cc10137d

  日期：——

  A facile synthesis of 4-indole benzofurans via an oxidative dearomatization, a silver-catalyzed cascade Michael addition-annulation, and an aromatization is reported.

  通过氧化脱芳构建的银催化级联迈克尔加成-环化和芳香化，报告了一种简便的4-吲哚苯并呋喃合成。
• A Facile Construction of Bisheterocyclic Methane Scaffolds through <scp>Palladium‐Catalyzed</scp> Domino Cyclization
  作者：Hongbo Qi、Kaiming Han、Shufeng Chen

  DOI：10.1002/cjoc.202100242

  日期：2021.10

  A convenient palladium-catalyzed domino cyclization reaction for the construction of bis(benzofuranyl)methane scaffolds bearing an all-carbon quaternary center has been described. In the cascade process, one C(sp2)—O bond, two C(sp2)—C(sp3) bonds as well as two benzofuran rings are formed in a single synthetic sequence. The approach shows wide scope of substrates and good functional-group tolerance

  已经描述了一种方便的钯催化的多米诺环化反应，用于构建带有全碳四元中心的双（苯并呋喃基）甲烷支架。在级联过程中，一个C(sp 2 )-O 键、两个C(sp 2 )-C(sp 3 ) 键以及两个苯并呋喃环在单一合成序列中形成。该方法显示出广泛的底物和良好的官能团耐受性。此外，该方法成功地扩展到苯并呋喃基甲基色满衍生物的合成。
• Indium(III)-Catalyzed Synthesis of Benzo[<i>b</i>]furans by Intramolecular Hydroalkoxylation of <i>ortho</i>-Alkynylphenols: Scope and Mechanistic Insights
  作者：Lorena Alonso-Marañón、M. Montserrat Martínez、Luis A. Sarandeses、Enrique Gómez-Bengoa、José Pérez Sestelo

  DOI：10.1021/acs.joc.8b00829

  日期：2018.8.3

  Indium(III) halides catalyze the hydroalkoxylation reaction of ortho-alkynylphenols to afford benzo[b]furans in good yields. The reaction proceeds with 5-endo-dig regioselectivity with a variety of phenols functionalized at the arene and alkyne moieties in high yields using InI3 (5 mol %) in DCE. Experimental and computational studies support a mechanism based on the indium(III) π-Lewis acid activation

  卤化铟（III）催化邻炔基苯酚的加氢烷氧基化反应，以高收率提供苯并[ b ]呋喃。反应的进行与5-内切-挖区域选择性与各种在芳烃官能酚类和以高产率使用的InI炔基部分3在DCE（5摩尔％）。实验和计算研究支持了基于炔烃的铟（III）π-路易斯酸活化，然后进行苯酚的亲核加成和最终的原金属脱金属，得到相应的苯并[ b ]呋喃的机理。DFT计算表明二聚体In 2 I 6 是通过与炔烃和羟基的新型双配位而催化的物质。