2-(4-methylbenzyl)benzofuran | 1266334-11-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 2-(4-methylbenzyl)benzofuran
• 英文别名: 2-[(4-Methylphenyl)methyl]-1-benzofuran
• CAS: 1266334-11-5
• 化学式: C₁₆H₁₄O
• 分子量: 222.287
• InChiKey: DLHVMCCWPCNJEA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  1-(2-hydroxyphenyl)-3-(p-tolyl)prop-2-yn-1-ol 在 异氰酸叔丁酯 、 palladium diacetate 、 caesium carbonate 作用下， 以 乙腈 为溶剂， 反应 6.0h， 以85%的产率得到2-(4-methylbenzyl)benzofuran
  参考文献：
  名称：

  Pd-Catalyzed Isocyanide Assisted Reductive Cyclization of 1-(2-Hydroxyphenyl)-propargyl Alcohols for 2-Alkyl/Benzyl Benzofurans and Their Useful Oxidative Derivatization

  摘要：

  An unusual Pd-catalyzed isocyanide assisted 5exo-dig reductive cyclization of 1-(2-hydroxyphenyl)-propargyl alcohols is achieved for 2-alkyl/benzyl benzofurans. The reaction features a high substrate scope, insensitivity to air, and excellent product yielding. Further, a direct metal-free C-H functionalization (azidation, alkoxylation, and hydroxylation) and selective oxidative cleavage of thus synthesized 2-benzylfurans are described for azido-, alkoxy-, hydroxyl-, amide-, and tetrazolyl adducts.

  DOI：

  10.1021/acs.joc.5b02204

文献信息

• Palladium-catalyzed Tsuji–Trost-type reaction of benzofuran-2-ylmethyl acetates with nucleophiles
  作者：Antonio Arcadi、Giancarlo Fabrizi、Andrea Fochetti、Francesca Ghirga、Antonella Goggiamani、Antonia Iazzetti、Federico Marrone、Giulia Mazzoccanti、Andrea Serraiocco

  DOI：10.1039/d0ra09601f

  日期：——

  palladium-catalyzed benzylic-like nucleophilic substitution of benzofuran-2-ylmethyl acetate with N, S, O and C soft nucleophiles has been investigated. The success of the reaction is dramatically influenced by the choice of catalytic system: with nitrogen based nucleophiles the reaction works well with Pd2(dba)3/dppf, while with sulfur, oxygen and carbo-nucleophiles [Pd(η3-C3H5)Cl]2/XPhos is more efficient

  研究了钯催化的苯并呋喃-2-基甲基乙酸酯与 N、S、O 和 C 软亲核试剂的类苄基亲核取代反应。反应的成功很大程度上取决于催化体系的选择：对于氮基亲核试剂，反应与 Pd2(dba)3/dppf 反应良好，而对于硫、氧和碳亲核试剂 [Pd(η3-C3H5)Cl] 2/XPhos 效率更高。区域化学结果表明，亲核取代仅发生在 η3-(苯并呋喃基)甲基配合物的苄位上。高至优异的产率和实验程序的简单性使该方案成为制备 2-取代苯并[b]呋喃的通用合成工具。
• Palladium-catalyzed intermolecular coupling of 3-substituted propargylic carbonates with phenols: Synthesis of 2-substituted benzofuran derivatives
  作者：Hirotaka Watanabe、Masataka Okubo、Kouichi Watanabe、Takumi Udagawa、Motoi Kawatsura

  DOI：10.1016/j.tetlet.2017.06.023

  日期：2017.7

  accomplished the synthesis of 2-substituted benzofuran derivatives by the palladium-catalyzed reaction of 3-substituted propargylic carbonates with phenols. The 2-substituted benzofuran derivatives were obtained through the intermolecular coupling of the 3-substituted propargylic carbonates with phenols, and sequential intramolecular cyclization reaction.

  我们通过3-取代的炔丙基碳酸酯与酚的钯催化反应完成了2-取代的苯并呋喃衍生物的合成。通过3-取代的炔丙基碳酸酯与苯酚的分子间偶联和随后的分子内环化反应获得2-取代的苯并呋喃衍生物。
• Benzofuran and indole synthesis via Cu(<scp>i</scp>)-catalyzed coupling of N-tosylhydrazone and o-hydroxy or o-amino phenylacetylene
  作者：Tiebo Xiao、Xichang Dong、Lei Zhou

  DOI：10.1039/c2ob26867a

  日期：——

  A general and practical method to synthesize 2-substituted benzofurans and indoles is described. This method employs easily accessible N-tosylhydrazones and o-hydroxy or o-amino phenylacetylenes as substrates. The reaction proceeds through a CuBr-catalyzed coupling–allenylation–cyclization sequence under ligand-free conditions.

  描述了合成2-取代的苯并呋喃和吲哚的一般和实用的方法。该方法采用容易获得的N-甲苯磺酰hydr和邻羟基或邻氨基苯基乙炔作为底物。反应在无配体条件下通过CuBr催化的偶联-烯基化-环化序列进行。
• CuBr-Catalyzed Coupling of <i>N-</i>Tosylhydrazones and Terminal Alkynes: Synthesis of Benzofurans and Indoles
  作者：Lei Zhou、Yi Shi、Qing Xiao、Yizhou Liu、Fei Ye、Yan Zhang、Jianbo Wang

  DOI：10.1021/ol103009n

  日期：2011.3.4

  A new method for the synthesis of benzofurans or indoles via ligand-free CuBr-catalyzed coupling/cyclization of terminal alkynes with N-tosylhydrazones derived from o-hydroxy- or o-aminobenzaldehydes has been developed. A wide range of functional groups were found that are able to tolerate the reaction conditions.

  已经开发了通过无配体的CuBr催化的末端炔与衍生自邻羟基或邻氨基苯甲醛的N-甲苯磺酰hydr的偶联/环化反应来合成苯并呋喃或吲哚的新方法。发现能够耐受反应条件的各种各样的官能团。
• US3947470A
  申请人：——

  公开号：US3947470A

  公开（公告）日：1976-03-30