5-ethyl-3-(2-furyl)-2,5-dihydrofuran-2-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢呋喃
• 英文名称: 5-ethyl-3-(2-furyl)-2,5-dihydrofuran-2-one
• 英文别名: 5'-ethyl-5'H-[2,3']bifuranyl-2'-one；2-ethyl-4-(furan-2-yl)-2H-furan-5-one
• 化学式: C₁₀H₁₀O₃
• 分子量: 178.188
• InChiKey: RXXQSOQNGJNGFF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  39.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  (E)-2-(5-ethyl-2-oxotetrahydrofuran-3-ylidene)tetrahydrofuran 在 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 1,4-二氧六环 为溶剂， 反应 48.0h， 以42%的产率得到5-ethyl-3-(2-furyl)-2,5-dihydrofuran-2-one
  参考文献：
  名称：

  Efficient Synthesis of Furan-2-ylacetates, 7-(Alkoxycarbonyl)benzofurans, and 7-(Alkoxycarbonyl)-2,3-dihydrobenzofurans Based on Cyclization Reactions of Free and Masked Dianions:  A “Cyclization/Dehydrogenation” Strategy

  摘要：

  A variety of furan-2-ylacetates have been prepared by dehydrogenation of monocyclic 2-alkylidene-tetrahydrofurans, which are readily available by cyclizations of open-chained 1,3-dicarbonyl dianions with 1-bromo-2-chloroethane. 5'H-[2,3']Bifuranyl-2'-ones are available based on sequential "cyclization/dehydrogenation" reactions of alpha-acetyl-gamma-butyrolactones. A variety of 7-(alkoxycarbonyl)-benzofarans and 7-(alkoxycarbonyl)-2,3-dihydrobenzofurans were prepared by a cyclization/ dehydrogenation strategy. These reactions rely on cyclizations of 2-oxocycloalkane-1-carboxylate/derived 1,3-dicarbonyl dianions ("free dianions") or 1,3-bis-silyl enol ethers ("masked dianions") with various 1,2-dielectrophiles.

  DOI：

  10.1021/jo051767i

文献信息

• Synthesis and Antifungal Activity Evaluation of 3-Hetaryl-2,5-dihydrofuran-2-ones. An Unusual Fragmentation of the Oxazole Ring via 2,3-Selenoxide Shift
  作者：Jiří Kuneš、Vojtěch Balšánek、Milan Pour、Vladimír Buchta

  DOI：10.1135/cccc20011809

  日期：——

  In continuing the studies on the synthesis and evaluation of antifungal activity of the analogues of (-)incrustoporine, the replacement of the phenyl moiety at C3 of the furanone ring with a hetaryl substituent was considered. Thus, a series of 5-alkyl-3-hetaryl-2,5-dihydrofuran-2-ones with the thienyl, furyl and thiazolyl moieties attached to C3 was synthesized, and the compounds subjected to antifungal activity screening. In the preparation of compounds containing the oxazolyl fragment, the [2,3]-sigmatropic rearrangement led to the fragmentation of the oxazole ring, resulting in the formation of 3-(1-benzamido-2-oxoethylidene)-5-methyltetrahydrofuran-2-one. Somewhat surprisingly, the antifungal efficiency of the derivatives was lower in comparison with analogues containing a substituted phenyl at C3.

  在继续对(-)incrustoporine的类似物进行合成和抗真菌活性评估的研究中，考虑了在呋喃酮环的C3位置用杂环取代基取代苯基的替换。因此，合成了一系列连接到C3的噻吩基、呋喃基和噻唑基的5-烷基-3-杂环-2,5-二氢呋喃-2-酮，并对这些化合物进行了抗真菌活性筛选。在含有噁唑基片段的化合物制备过程中，[2,3]-sigmatropic重排导致噁唑环的断裂，形成了3-(1-苯甲酰胺基-2-氧乙烯基)-5-甲基四氢呋喃-2-酮。令人惊讶的是，与含有取代苯基的类似物相比，这些衍生物的抗真菌效果较低。
• Efficient Synthesis of Furan-2-ylacetates, 7-(Alkoxycarbonyl)benzofurans, and 7-(Alkoxycarbonyl)-2,3-dihydrobenzofurans Based on Cyclization Reactions of Free and Masked Dianions:  A “Cyclization/Dehydrogenation” Strategy
  作者：Esen Bellur、Peter Langer

  DOI：10.1021/jo051767i

  日期：2005.11.1

  A variety of furan-2-ylacetates have been prepared by dehydrogenation of monocyclic 2-alkylidene-tetrahydrofurans, which are readily available by cyclizations of open-chained 1,3-dicarbonyl dianions with 1-bromo-2-chloroethane. 5'H-[2,3']Bifuranyl-2'-ones are available based on sequential "cyclization/dehydrogenation" reactions of alpha-acetyl-gamma-butyrolactones. A variety of 7-(alkoxycarbonyl)-benzofarans and 7-(alkoxycarbonyl)-2,3-dihydrobenzofurans were prepared by a cyclization/ dehydrogenation strategy. These reactions rely on cyclizations of 2-oxocycloalkane-1-carboxylate/derived 1,3-dicarbonyl dianions ("free dianions") or 1,3-bis-silyl enol ethers ("masked dianions") with various 1,2-dielectrophiles.