3-(ethoxycarbonyl)methyl-7-methoxyphthalide | 83465-31-0

• 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: 3-(ethoxycarbonyl)methyl-7-methoxyphthalide
• 英文别名: ethyl 2-(4-methoxy-3-oxo-1,3-dihydroisobenzofuran-1-yl)acetate；ethyl 2-(4-methoxy-3-oxo-1H-2-benzofuran-1-yl)acetate
• CAS: 83465-31-0
• 化学式: C₁₃H₁₄O₅
• 分子量: 250.251
• InChiKey: JSRKACCDNUXYDQ-UHFFFAOYSA-N

物化性质

• 沸点：
  401.7±45.0 °C(Predicted)
• 密度：
  1.225±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  3-(ethoxycarbonyl)methyl-7-methoxyphthalide 在 三氯化铝 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以93%的产率得到3-carboethoxymethyl-7-hydroxyphthalide
  参考文献：
  名称：

  Yeola, Suresh N.; Mali, R. S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1986, vol. 25, p. 804 - 806

  摘要：

  DOI：
• 作为产物：
  描述：

  ethyl (2E)-2-(4-methoxy-3-oxo-2-benzofuran-1-ylidene)acetate 生成 3-(ethoxycarbonyl)methyl-7-methoxyphthalide
  参考文献：
  名称：

  ALLAHDAD, AHMAD;KNIGHT, D. W., J. CHEM. SOC. PERKIN TRANS., 1982, N 8, 1855-1863

  摘要：

  DOI：

文献信息

• One-Pot Sequential N-Heterocyclic Carbene/Rhodium(III) Catalysis: Synthesis of Fused Polycyclic Isocoumarins
  作者：So Won Youn、Huen Ji Yoo

  DOI：10.1002/adsc.201700072

  日期：2017.7.3

  A one‐pot sequential N‐heterocyclic carbene–rhodium (NHC‐Rh) catalysis is described, demonstrating the compatibility of NHC and Rh catalysts. N‐Heterocyclic carbene‐catalyzed aerobic oxidation of benzaldehydes and subsequent rhodium(III)‐catalyzed oxidative coupling/annulation with multiple bonds enabled the formation of two C–O bonds and one C–C bond in a single pot. This operationally easy, one‐pot

  描述了一个单锅顺序N-杂环卡宾-铑（NHC-Rh）催化，证明了NHC和Rh催化剂的相容性。N-杂环卡宾催化的苯甲醛好氧氧化，以及随后铑（III）催化的具有多个键的氧化偶联/环化反应，可在一个锅中形成两个C-O键和一个C-C键。这种易于操作的单罐协议在空气中提供了访问各种有价值的稠合多环异香豆素的途径。
• Synthesis of Phthalides through Tandem Rhodium-Catalyzed C-H Olefination and Annulation of Benzamides
  作者：Neeraj Kumar Mishra、Jihye Park、Miji Choi、Satyasheel Sharma、Hyeim Jo、Taejoo Jeong、Sangil Han、Saegun Kim、In Su Kim

  DOI：10.1002/ejoc.201600368

  日期：2016.6

  The rhodium(III)-catalyzed tandem C–H olefination and cyclization of benzamides with various alkenes is described. This protocol provides direct access to highly substituted phthalides, which are known as crucial frameworks of biologically active compounds. In particular, the amide directing group containing a benzimidazole group facilitates the activation of aromatic ortho-C–H bonds leading to olefination

  描述了铑 (III) 催化的串联 C-H 烯化和苯甲酰胺与各种烯烃的环化。该协议提供了对被称为生物活性化合物的关键框架的高度取代的苯酞的直接访问。特别是，含有苯并咪唑基团的酰胺导向基团促进芳族邻-C-H键的活化，导致烯化中间体，并迅速转化为酸部分，可以进一步进行分子内环化过程。
• Urea‐Substituted Tetramethylcyclopentadienyl Ligands for Supramolecularly Accelerated Rh ^III ‐Catalyzed <i>ortho</i> ‐C−H Olefination of Benzoic Acid Derivatives
  作者：David Maurer、Bernhard Breit

  DOI：10.1002/chem.202005130

  日期：2021.2.5

  Through kinetic studies and NMR titration experiments, the catalysts’ substrate recognition ability mediated by hydrogen bonding was identified to be the reason for this effect. Introduction of pyridone‐phosphine ligands capable of forming additional H‐bond interactions increased the catalytic performance even further. By unveiling a proportionality between reaction rate and relative complex formation

  空气稳定且易于结晶的Rh III的设计与合成据报道，用脲部分取代的环戊二烯基催化剂能够促进苯甲酸衍生物的CHH烯化反应。通过动力学研究和NMR滴定实验，确定了氢键介导的催化剂底物识别能力是造成这种效应的原因。能够形成额外的H键相互作用的吡啶酮-膦配体的引入进一步提高了催化性能。通过揭示反应速率和相对复杂的形成焓之间的比例关系，支持了超分子催化剂预形成的假设。它在多种基材上的应用证明了催化剂体系的优势，与广泛使用[RhCp * Cl 2 ]的结果相比，通常可以提高收率。2。
• Ruthenium-Catalyzed Oxidative C–H Bond Alkenylations in Water: Expedient Synthesis of Annulated Lactones
  作者：Lutz Ackermann、Jola Pospech

  DOI：10.1021/ol201563r

  日期：2011.8.19

  Ruthenium-catalyzed cross-dehydrogenative C-H bond alkenylations occurred efficiently in environmentally benign water, which was exploited for an oxidative phthalide synthesis with ample scope. Mechanistic studies provided strong evidence for the oxidative alkenylation to proceed by an irreversible C-H bond metalation via acetate assistance.
• Recyclable and Reusable [RuCl₂(<i>p</i>-cymene)]₂/Cu(OAc)₂/PEG-400/H₂O System for Oxidative C–H Bond Alkenylations: Green Synthesis of Phthalides
  作者：Hong Zhao、Tinli Zhang、Tao Yan、Mingzhong Cai

  DOI：10.1021/acs.joc.5b01388

  日期：2015.9.4

  [RuCl2(p-cymene)](2) in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be an extremely efficient catalyst for the cross-dehydrogenative C-H bond alkenylation reaction between benzoic acids and alkenes. The reaction could be conducted at 80 degrees C using Cu(OAc)(2). H2O as oxidant, yielding a variety of phthalide derivatives in good to excellent yields. More importantly, both [RuCl2(p-cymene)](2) and Cu(OAc)(2) in the PEG-400/H2O system could be easily recycled and reused six times without any loss of catalytic activity.