6-methyl-4-octyl-2-pyrone

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 6-methyl-4-octyl-2-pyrone
• 英文别名: 6-Methyl-4-octylpyran-2-one
• 化学式: C₁₄H₂₂O₂
• 分子量: 222.327
• InChiKey: PHBVZSWTIYRPBU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  16
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  4-羟基-6-甲基-2-吡喃酮 在 N-甲基吡咯烷酮 、 三乙胺 、 iron(II) chloride 作用下， 以 四氢呋喃 、 氯仿 为溶剂， 反应 1.0h， 生成 6-methyl-4-octyl-2-pyrone
  参考文献：
  名称：

  铁催化的链烯基乙酸酯的交叉偶联

  摘要：

  稳定的CO键通常在交叉偶联反应中没有反应性，而交叉偶联反应通常使用更多的亲电子卤化物或活化的酯（三氟甲磺酸酯，甲苯磺酸酯）。乙酸盐价格便宜，易于获得亲电试剂，但由于其强大的CO键和极高的参与不希望的乙酰化和去质子化的能力，因此并未用于交叉偶联中。本文报道了多种乙酸烯基酯的选择性铁催化交叉偶联，它在温和的反应条件下（0°C，2 h）与不含配体的催化剂（1-2 mol％）一起运行。

  DOI：

  10.1002/anie.201504524

文献信息

• Bioactive 4-substituted-6-methyl-2-pyrones with promising cytotoxicity against A2780 and K562 cell lines
  作者：Lester R. Marrison、Julia M. Dickinson、Ian J.S. Fairlamb

  DOI：10.1016/s0960-894x(02)00824-7

  日期：2002.12

  Bioactive synthetic 4-substituted-6-methyl-2-pyrones are reported. Various 4-substitutents have been incorporated using Pd-catalysed carbon-carbon bond coupling procedures. Preliminary screening of the 2-pyrones against human ovarian carcinoma (A2780) and human chronic myelogenous leukaemia (K562) cell lines show that 4-alkynyl-6-methyl-2-pyrones have excellent potential as anticancer agents. The pyrones demonstrate broad spectrum antimicrobial activities. (C) 2002 Elsevier Science Ltd. All rights reserved.
• 2-Pyrones possessing antimicrobial and cytotoxic activities
  作者：Ian J.S Fairlamb、Lester R Marrison、Julia M Dickinson、Feng-Ju Lu、Jan Peter Schmidt

  DOI：10.1016/j.bmc.2004.01.051

  日期：2004.8.1

  The 2-pyrone sub-unit is found in a number of natural products possessing broad spectrum biological activity. Such compounds are validated as being capable of binding to specific protein domains and able to exert a remarkable range of biological effects. In an effort to identify synthetic 2-pyrones with interesting biological effects, herein we report the synthesis and biological evaluation of 4-substituted-6-methyl-2-pyrones. Synthetic routes to 4-alkyl/alkenyl/aryl/alkynyl-6-methyl-2-pyrones have been developed utilising Sonogashira, Suzuki and Negishi cross-coupling starting from readily available 4-bromo-6-methyl-2-pyrone. Specific conditions for each organometallic protocol were required for successful cross-coupling. In particular, a triethylamine/acetonitrile-base/solvent mixture was crucial to Sonogashira alkynylation of 4-bromo-6-methyl-2-pyrone, whereas thallium carbonate was a mandatory base for the Suzuki cross-coupling of trialkylboranes. The 2-pyrones demonstrate potent inhibitory activity against Bacillus subtilis, Escherichia coli, Staphylococcus aureus, Schizosaccharomyces pombe and Botrytis cinerea. The growth inhibitory activities of selected 2-pyrones were determined in A2780 human ovarian carcinoma and K562 human chronic myelogenous leukaemia cell lines using an in vitro cell culture system (MTT assay). These studies demonstrate that 4-phenylethynyl-, 4-tetrahydropyranylpropargyl ether- and 4-ethynyl-6-methyl-2-pyrones have excellent potential as a new class of anticancer agents. (C) 2004 Elsevier Ltd. All rights reserved.
• Iron-Catalyzed Cross-Coupling of Alkenyl Acetates
  作者：Dominik Gärtner、André Luiz Stein、Sabine Grupe、Johannes Arp、Axel Jacobi von Wangelin

  DOI：10.1002/anie.201504524

  日期：2015.9.1

  unreactive in cross‐coupling reactions which mostly employ more electrophilic halides or activated esters (triflates, tosylates). Acetates are cheap and easily accessible electrophiles but have not been used in cross‐couplings because the strong CO bond and high propensity to engage in unwanted acetylation and deprotonation. Reported herein is a selective iron‐catalyzed cross‐coupling of diverse alkenyl

  稳定的CO键通常在交叉偶联反应中没有反应性，而交叉偶联反应通常使用更多的亲电子卤化物或活化的酯（三氟甲磺酸酯，甲苯磺酸酯）。乙酸盐价格便宜，易于获得亲电试剂，但由于其强大的CO键和极高的参与不希望的乙酰化和去质子化的能力，因此并未用于交叉偶联中。本文报道了多种乙酸烯基酯的选择性铁催化交叉偶联，它在温和的反应条件下（0°C，2 h）与不含配体的催化剂（1-2 mol％）一起运行。