1-(3,4-dimethoxyphenyl)-6,7-dimethoxyisochroman | 861144-96-9

• 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: 1-(3,4-dimethoxyphenyl)-6,7-dimethoxyisochroman
• 英文别名: 1-(3,4-dimethoxyphenyl)-6,7-dimethoxy-3,4-dihydro-1H-isochromene
• CAS: 861144-96-9
• 化学式: C₁₉H₂₂O₅
• 分子量: 330.381
• InChiKey: MIQMHRTWBUVAQL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  46.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  吡咯 、 1-(3,4-dimethoxyphenyl)-6,7-dimethoxyisochroman 在 葡糖酸 作用下， 以 水 为溶剂， 反应 11.0h， 以46%的产率得到2-[(3,4-dimethoxyphenyl)(4,5-dimethoxy-2-(2-hydroxyethyl)phenyl)methyl]-1H-pyrrole
  参考文献：
  名称：

  Gluconic acid aqueous solution: a task-specific bio-based solvent for ring-opening reactions of dihydropyrans

  摘要：

  Gluconic acid aqueous solution (GAAS) that is a largely available bio-based chemical was proved to be an effective task-specific medium for ring-opening reactions of dihydropyrans. In the presence of nucleophiles, such as indoles, 1,3-cyclohexanediones, N,N-dimethylaniline, N-methylaniline, 2-naphthol, and resorcin, a series of 2-substituted 1, 3-dicarbonyl compounds were synthesized in good to excellent yields. The first example of ring-opening of oxa-Pictet-Spengler product with nucleophiles was also described. These results not only demonstrate the feasibility of using GAAS as a sustainable solvent, but also offer an effective way for the ring-opening reactions of dihydropyrans with nucleophiles. Because these reactions proceeded with excellent atom-economy in a sustainable bio-based solvent, the present method was thus characterized by many properties of green chemistry, such as green solvent, atom-economy, and utilization of bio-based chemicals. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.11.076
• 作为产物：
  描述：

  3,4-二甲氧基苯甲醛 在 sodium tetrahydroborate 、 三氟乙酸酐 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 20.34h， 生成 1-(3,4-dimethoxyphenyl)-6,7-dimethoxyisochroman
  参考文献：
  名称：

  三氟乙酸酐介导的羧基-皮克特-斯彭格勒反应一锅法合成1-芳基异色满-3-酮

  摘要：

  在本文中，通过（CF 3 CO）2 O（三氟乙酸酐，TFAA）介导的分子间（4 + 2）描述了一种新颖且开放的途径，用于简便地合成1-芳基异色烷-3-酮在温和的反应条件下，用芳基醛或酮对含氧的芳基丙烯酸进行环氧化。本文提出并讨论了一种合理的机制。研究了在环境友好的一锅式羧基-Pictet-Spengler反应下进行有效转化的各种反应条件。

  DOI：

  10.1021/acs.joc.9b01605

文献信息

• Oxa-Pictet–Spengler reaction in water. Synthesis of some (±)-1-aryl-6,7-dimethoxyisochromans
  作者：Aamer Saeed

  DOI：10.1016/j.cclet.2009.11.009

  日期：2010.3

  Abstract An acid catalyzed oxa-Pictet–Spengler reaction ‘on water’ leading to the synthesis of a variety of 1-aryl-6,7-dimethoxyisochromans is described. The aqueous chemistry is a much cleaner, efficient, cheaper and simple method for synthesis. The scope of reactions was extended to thia-Pictet–Spengler reaction to afford the some isothiochromans.

  摘要描述了一种酸催化的“ oxa-Pictet-Spengler反应在水上”反应，该反应导致合成各种1-芳基-6,7-二甲氧基异色满。水性化学物质是一种更清洁，有效，便宜且简单的合成方法。反应范围扩大到了硫杂-皮格特-斯宾格勒反应，得到了一些异硫氰酸盐。
• Synthesis of isochromans via Fe(OTf)2-catalyzed Oxa-Pictet–Spengler cyclization
  作者：Jimei Zhou、Chao Wang、Dong Xue、Weijun Tang、Jianliang Xiao、Chaoqun Li

  DOI：10.1016/j.tet.2018.10.028

  日期：2018.12

  Fe(OTf)2 has been found to be an efficient catalyst for the Oxa-Pictet–Spengler cyclization reaction leading to isochromans. A series of substituted isochromans were obtained with good to excellent isolated yields by coupling β-arylethanols with aldehydes or ketals under the catalysis of 1 mol% of Fe(OTf)2 at 70 °C. Using a cheap, less-toxic catalyst with water as the only byproduct, this iron-catalyzed

  已发现Fe（OTf）2是导致异色团的Oxa-Pictet-Spengler环化反应的有效催化剂。通过 在70℃下1摩尔％的Fe（OTf）2催化下，将β-芳基乙醇与醛或缩酮偶联，可以得到一系列具有良好分离效果的取代异色满。使用廉价的，毒性较小的催化剂，水是唯一的副产物，这种铁催化的Oxa-Pictet-Spengler反应可以被认为对环境友好且经济实惠。