3-(2-hydroxy-2-methyl-propylidene)-3H-isobenzofuran-1-one | 147454-71-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异香豆素
• 英文名称: 3-(2-hydroxy-2-methyl-propylidene)-3H-isobenzofuran-1-one
• 英文别名: (3Z)-3-(2-hydroxy-2-methylpropylidene)-2-benzofuran-1-one
• CAS: 147454-71-5
• 化学式: C₁₂H₁₂O₃
• 分子量: 204.225
• InChiKey: IKOCXGHQSXPVBF-YFHOEESVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-(2-hydroxy-2-methyl-propylidene)-3H-isobenzofuran-1-one 在 一氯化碘 作用下， 生成 3-(1'-iodo-2'-hydroxy-2'-methylpropylidene) phthalide
  参考文献：
  名称：

  Synthesis of phthalides through palladium-catalysed heteroannulation of acetylenic compounds

  摘要：

  邻碘苯甲酸与各种乙炔化合物在钯催化剂的存在下反应，主要生成酞烯 [1-(3H)异苯并呋喃-3-酮]，少量生成异香豆素。

  DOI：

  10.1039/c39930000086
• 作为产物：
  描述：

  2-(3-Hydroxy-3-methyl-but-1-ynyl)-benzoic acid 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 三乙胺 作用下， 以 苯 为溶剂， 反应 20.0h， 生成 3-(2-hydroxy-2-methyl-propylidene)-3H-isobenzofuran-1-one
  参考文献：
  名称：

  Synthesis of phthalides through palladium-catalysed heteroannulation of acetylenic compounds

  摘要：

  邻碘苯甲酸与各种乙炔化合物在钯催化剂的存在下反应，主要生成酞烯 [1-(3H)异苯并呋喃-3-酮]，少量生成异香豆素。

  DOI：

  10.1039/c39930000086

文献信息

• An Unusual Conversion of 2‐(Alkynonyl)Alkynylbenzenes to Isocoumarins by a Retro‐Favorskii‐like Degradation
  作者：Jampani Santhi、Beeraiah Baire

  DOI：10.1002/asia.201900745

  日期：2019.9.16

  We report the discovery of an anomalous reaction of 2-(alkynonyl)alkynylbenzenes under AgI catalysis for the selective formation of isocoumarins. This reaction is previously undocumented for 2-(alkynonyl)alkynylbenzenes in terms of the reaction mechanism and the product formed. Water (H2 O18 ) labeling studies suggested a possible mechanistic pathway in which the initial formation of a pyrylium ion

  我们报告了2-（炔基）炔基苯在AgI催化下选择性形成异香豆素的反常反应的发现。就反应机理和形成的产物而言，对于2-（炔基）炔基苯，该反应以前没有记载。水（H2 O18）标记研究表明，可能的机理途径是，首先形成吡咯鎓离子，然后进行水合脱羰基化反应，即水掺入和炔烃排出，这与法维斯基逆反应相似。
• Palladium-catalysed heteroannulation with terminal alkynes: synthesis of phthalides 1
  作者：Nitya G. Kundu、Manojit Pal、Bidisha Nandi

  DOI：10.1039/a705450e

  日期：——

  The palladium–copper-catalysed heteroannulation of o-iodobenzoic acid 3 with terminal alkynes 4–18 leads to the synthesis of (Z)-3-alkylidenephthalides 19–33 as the major products. In certain cases, the formation of isocoumarins 34–37 is also observed.

  钯-铜催化的o-碘苯甲酸3与末端炔烃4-18的杂环化反应主要合成得到(Z)-3-烷亚基苯并呋喃19-33。在某些情况下，也会观察到异香豆素34-37的形成。
• Synthesis of phthalides via Pd/CNTs-catalyzed reaction of terminal alkynes and o-iodobenzoic acid under copper- and ligand-free conditions
  作者：Lei Zhou、Huan-Feng Jiang

  DOI：10.1016/j.tetlet.2007.09.170

  日期：2007.11

  A phosphine- and copper-free protocol for the synthesis of phthalides via Pd/CNTs-catalyzed tandem coupling-cyclization process has been developed. The palladium immobilized on CNTs showed high catalytic activity, and the reactions with a variety of terminal alkynes and o-iodobenoic acid proceeded smoothly to give phthalides in moderate to good yields catalyzed by 0.1% mmol Pd/CNTs. (c) 2007 Elsevier Ltd. All rights reserved.
• Pd/C-mediated synthesis of (Z)-3-alkylidenephthalides of potential pharmacological interest
  作者：D. Rambabu、G. Pavan Kumar、Barange Deepak Kumar、Ravikumar Kapavarapu、M.V. Basaveswara Rao、Manojit Pal

  DOI：10.1016/j.tetlet.2013.03.121

  日期：2013.6

  The coupling of o-bromobenzoic acid with terminal alkynes using 10% Pd/C-Et3N-CuI-PPh3 as a catalyst system leads to the synthesis of (Z)-3-alkylidenephthalides as the major product along with the traces of isocoumarin when the reaction was performed in 1,4-dioxane. The methodology afforded a range of compounds including (Z)-3-(4-(methylsulfonyl)benzylidene)isobenzofuran-1(3H)-one of potential pharmacological interest. (C) 2013 Elsevier Ltd. All rights reserved.
• Synthesis of Isocoumarins via Pd/C-Mediated Reactions of <i>o</i>-Iodobenzoic Acid with Terminal Alkynes
  作者：Venkataraman Subramanian、Venkateswara Rao Batchu、Deepak Barange、Manojit Pal

  DOI：10.1021/jo050440e

  日期：2005.6.1

  The coupling reaction of o-iodobenzoic acid with terminal alkynes by using a catalyst system of 10% Pd/C-Et3N-CuI-PPh3 has been studied in a variety of solvents. 3-Substituted isocoumarins were formed in good yields and with good regioselectivity when the reaction was performed in EtOH.