6-methoxy-3-methyl-2H-chromen-2-one | 62399-35-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 6-methoxy-3-methyl-2H-chromen-2-one
• 英文别名: 6-methoxy-3-methylchromen-2-one；6-methoxy-3-methyl-coumarin；6-Methoxy-3-methyl-cumarin；6-Methoxy-3-methylcumarin
• CAS: 62399-35-3
• 化学式: C₁₁H₁₀O₃
• 分子量: 190.199
• InChiKey: DCILGSCUIBKXBX-UHFFFAOYSA-N

物化性质

• 熔点：
  110 °C
• 沸点：
  351.6±37.0 °C(Predicted)
• 密度：
  1.195±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  6-methoxy-3-methyl-2H-chromen-2-one 在 氢碘酸 、 乙酸酐 作用下， 生成 6-hydroxy-3-methyl-coumarin
  参考文献：
  名称：

  Cingolani et al., Gazzetta Chimica Italiana, 1953, vol. 83, p. 647,651

  摘要：

  DOI：
• 作为产物：
  描述：

  6-甲氧基-2H-苯并吡喃-3-甲醛 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazolium chloride 作用下， 以 四氢呋喃 为溶剂， 反应 8.0h， 以64%的产率得到6-methoxy-3-methyl-2H-chromen-2-one
  参考文献：
  名称：

  A novel NHC-catalyzed transformation of 2H-chromene-3-carboxaldehydes to 3-methyl-2H-chromen-2-ones

  摘要：

  报告了在 NHC 介导下，2H-Chromene-3-carboxaldehydes 向香豆素衍生物的意外转化。

  DOI：

  10.1039/c1ob05325f

文献信息

• Synthesis of 3-Alkylcoumarins from Salicylaldehydes and α,β-Unsaturated Aldehydes Utilizing Nucleophilic Carbenes: A New Umpoled Domino Reaction
  作者：Jakob Toräng、Sylvia Vanderheiden、Martin Nieger、Stefan Bräse

  DOI：10.1002/ejoc.200600718

  日期：2007.2

  Starting from salicylaldehydes and α,β-unsaturated aldehydes, a new coumarin synthesis in ionic liquids is presented. The key feature is the generation of N-heterocyclic carbenes (NHC) and an Umpolung reaction. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

  从水杨醛和α,β-不饱和醛开始，提出了一种在离子液体中合成香豆素的新方法。关键特征是生成 N-杂环卡宾 (NHC) 和 Umpolung 反应。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
• Improvement of Fluorescence Characteristics of Coumarins: Syntheses and Fluorescence Properties of 6-Methoxycoumarin and Benzocoumarin Derivatives as Novel Fluorophores Emitting in the Longer Wavelength Region and Their Application to Analytical Reagents
  作者：Chiyomi Murata、Toshinobu Masuda、Yasuko Kamochi、Kenichiro Todoroki、Hideyuki Yoshida、Hitoshi Nohta、Masatoshi Yamaguchi、Akira Takadate

  DOI：10.1248/cpb.53.750

  日期：——

  To improve the fluorescence characteristics, especially emission wavelength, of coumarins, various 3-substituted-6-methoxycoumarin derivatives were synthesized, and then benzocoumarin derivatives were also synthesized in expectation of the shift to the longer wavelength region by the extension of the conjugated system. Their fluorescence properties were investigated spectrophotometrically in acetonitrile and evaluated from the viewpoint of the intramolecular charge transfer (ICT) between push- and pull-substituents in the ground and the excited states. Among them, benzocoumarin derivatives especially fluoresced in the longer wavelength around 540 nm with remarkably large Stokes shifts beyond 10000 cm−1. Using such fluorophores, some novel fluorescence derivatization reagents for carboxylic acids, alcohols, phenols, and amines were preliminarily prepared as an example, and their derivatized products were also found to fluoresce in the longer wavelength region with large Stokes shifts.

  为了改善香豆素的荧光特性，特别是发射波长，合成了多种3取代-6-甲氧基香豆素衍生物，随后又合成了苯香豆素衍生物，期待通过延长共轭体系实现向长波长区域的转移。采用光谱法在乙腈中研究了它们的荧光特性，并从基态和激发态中推送和拉动取代基之间的分子内电荷转移（ICT）角度进行了评估。在这些衍生物中，苯香豆素衍生物特别在540 nm附近的长波长范围内具有显著的荧光，斯托克斯位移超过10000 cm−1。利用这些荧光基团，初步制备了一些新型的荧光衍生化试剂用于羧酸、醇、酚和胺，发现其衍生化产物在长波长区域也具有显著的荧光和较大的斯托克斯位移。
• Exploring Pd/Al2O3 Catalysed Redox Isomerisation of Allyl Alcohol as a Platform to Create Structural Diversity
  作者：Attila Dékány、Enikő Lázár、Bálint Szabó、Viktor Havasi、Gyula Halasi、András Sápi、Ákos Kukovecz、Zoltán Kónya、Kornél Szőri、Gábor London

  DOI：10.1007/s10562-017-2087-4

  日期：2017.7

  catalytic cycle of the Pd/Al2O3 catalyzed redox isomerization of allyl alcohol. We show that the reactivity of allyl alcohol derived acrolein and enol can be involved in further cascade reactions leading to a diverse set of products. While the oxidation product acrolein can react via Michael and oxa-Michael reactions, the isomerization product enol can be readily involved in aldol condensation processes

  我们报告了关于利用 Pd/Al2O3 催化烯丙醇氧化还原异构化的催化循环中存在的不同反应性的结果。我们表明，烯丙醇衍生的丙烯醛和烯醇的反应性可以参与导致一系列不同产品的进一步级联反应。虽然氧化产物丙烯醛可以通过迈克尔和氧杂-迈克尔反应进行反应，但异构化产物烯醇可以很容易地参与羟醛缩合过程。水杨醛能够在其亲电羰基和亲核 OH 基团上分别与烯丙醇衍生的烯醇和丙烯醛反应，用于探索可以控制产物杂环结构的条件。
• Regioselective Coupling Reactions of Coumarins with Aldehydes or Di-<i>tert</i>-butyl Peroxide (DTBP) through a C(sp²)-H Functionalization Process
  作者：Wannian Zhao、Lei Xu、Yingcai Ding、Ben Niu、Ping Xie、Zhaogang Bian、Denghong Zhang、Aihua Zhou

  DOI：10.1002/ejoc.201501251

  日期：2016.1

  have developed two new coupling reactions that involve coumarins and either aldehydes or di-tert-butyl peroxide (DTBP) in the presence of inexpensive copper or iron catalysts. Both of these reactions proceed through a C(sp2)–H functionalization process to regioselectivity generate keto- or methyl-substituted coumarin derivatives in moderate to good yields These coupling reactions will enrich current coumarin

  香豆素衍生物是药物发现中非常有价值的化合物。在此，我们开发了两种新的偶联反应，它们涉及香豆素和醛或二叔丁基过氧化物 (DTBP) 在廉价的铜或铁催化剂存在下。这两个反应都通过 C(sp2)-H 官能化过程进行，以区域选择性生成酮或甲基取代的香豆素衍生物，产率中等至良好。这些偶联反应将丰富当前的香豆素化学。
• Synthesis and pharmacological evaluation of coumarin derivatives as cannabinoid receptor antagonists and inverse agonists
  作者：Andrea Behrenswerth、Nicole Volz、Jakob Toräng、Sonja Hinz、Stefan Bräse、Christa E. Müller

  DOI：10.1016/j.bmc.2009.02.027

  日期：2009.4

  In the present study we synthesized 36 coumarin and 2H-chromene derivatives applying a recently developed umpoled domino reaction using substituted salicylaldehyde and α,β-unsaturated aldehyde derivatives as starting compounds. In radioligand binding studies 5-substituted 3-benzylcoumarin derivatives showed affinity to cannabinoid CB1 and CB2 receptors and were identified as new lead structures. In

  在本研究中，我们使用取代的水杨醛和α，β-不饱和醛衍生物作为起始化合物，利用最近开发的本体化多米诺反应合成了36种香豆素和2 H-色烯衍生物。在放射性配体结合研究中，5取代的3-苄香豆素衍生物显示出对大麻素CB 1和CB 2受体的亲和力，并被确定为新的前导结构。在进一步的GTPγS结合研究中，选定的化合物显示为拮抗剂或反向激动剂。