(+/-)-2-(4-methoxyphenyl)-2,3-dihydro-5-methoxynaphtho<1,2-b>furan | 139016-15-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 萘并呋喃类
• 英文名称: (+/-)-2-(4-methoxyphenyl)-2,3-dihydro-5-methoxynaphtho<1,2-b>furan
• 英文别名: 2,3-dihydro-5-methoxy-2-(4-methoxyphenyl)naphtha[1,2-b]furan；5-Methoxy-2-(4-methoxyphenyl)-2,3-dihydrobenzo[g][1]benzofuran
• CAS: 139016-15-2
• 化学式: C₂₀H₁₈O₃
• 分子量: 306.361
• InChiKey: QLXYAOLQPGMONS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  4-甲氧基苯乙烯 、 4-甲氧基-1-萘酚 在 μ-oxo-[bis(trifluoroacetoxy)iodo]benzene 作用下， 以 乙腈 为溶剂， 生成 (+/-)-2-(4-methoxyphenyl)-2,3-dihydro-5-methoxynaphtho<1,2-b>furan
  参考文献：
  名称：

  Phenol and Aniline Oxidative Coupling with Alkenes by Using Hypervalent Iodine Dimer for the Rapid Access to Dihydrobenzofurans and Indolines

  摘要：

  A highly reactive hypervalent iodine dimer, [Ph(CF3COO)I]-O-[I(OCOCF3)Ph], is utilized as successful promoter in the oxidative phenolic coupling with styrenes leading to 2-aryldihydrobenzofurans. The extensions of the substrates in this study have led to the development of a new expeditious construction of the pyrroloindoline structure from aniline and enamide derivatives.

  DOI：

  10.3987/com-14-s(k)14

文献信息

• Mechanistic aspects and synthetic applications of the electrochemical and iodobenzene bistrifluoroacetate oxidative 1,3-cycloadditions of phenols and electron-rich styrene derivatives
  作者：Bradley D. Gates、Peter Dalidowicz、Andrew Tebben、Shaopeng Wang、John S. Swenton

  DOI：10.1021/jo00033a040

  日期：1992.3

  Anodic oxidation of p-methoxy-substituted phenols and electron-rich styrene or propenylbenzene derivatives affords in good yield trans-dihydrobenzofurans derived from a formal 1,3-oxidative cycloaddition of the phenol to the styrene derivative. The yield of product in this electrochemical oxidation depends upon the ratio of phenol to styrene derivative, current density, and to a lesser extent the amount of supporting electrolyte. While p-methoxyphenol and 4-methoxy-3-methylphenol give good yields of the dihydrobenzofurans using 1:1 molar ratio of reactants, 3,4-dimethoxyphenol requires a 3-4 molar excess of the styrene derivative for a comparable yield of product. Although 4-methoxy-1-naphthol shows yields comparable to p-methoxyphenol in the anodic cycloaddition reaction, 1- and 2-naphthol gave very low yields of product. Qualitatively, trans- and cis-1,2-dimethoxy-4-propenylbenzene show similar yields in the cycloaddition reaction. Many of these same substrates were examined using iodobenzene bis(trifluoroacetate) as oxidant, and the same products were formed as in the electrochemical oxidations noted above. However, for the reaction of 2-naphthol and 1,2-dimethoxy-4-propenylbenzene the iodobenzene bis(trifluoroacetate) oxidation gave a much better yield of the product. A mechanism involving reaction of a phenoxy radical-styrene radical cation pair is considered and discussed.