3-benzyl-6-methoxychromen-2-one

• 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: 3-benzyl-6-methoxychromen-2-one
• 英文别名: 3-benzyl-6-methoxy-2H-chromen-2-one
• 化学式: C₁₇H₁₄O₃
• 分子量: 266.296
• InChiKey: JKXJVLQFGQBEQF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  20
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  3-苯基丙酸 在 1-butyl-3-methylimidazolium hexafluorophosphate 作用下， 反应 6.5h， 生成 3-benzyl-6-methoxychromen-2-one
  参考文献：
  名称：

  Facile one-pot synthetic access to libraries of diversely substituted 3-aryl (Alkyl)-coumarins using ionic liquid (IL) or conventional base/solvent, and an IL-mediated approach to novel coumarin-bearing diaryl-ethynes

  摘要：

  The in-situ formed carbonylimidazole derivatives of Ar(alkyl)-CH2COOH react at r.t. with substituted salicylaldehydes in [BMIM][PF6] or [BMIM] [BEd as solvent, and [PAIM][NTf (2)] as basic-IL to produce libraries of 3-aryl(alkyl)coumarins. Whereas these reactions can also be performed with similar efficiency in THF by employing DBU, the IL approach offers easier work-up and recycling of the IL solvent. An IL-mediated approach to the synthesis of novel coumarin-bearing diaryl-ethynes by the Sonogshira reaction is also reported, and the potential for recycling/reuse of the IL solvent is shown. (C) 2020 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2020.151854

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)