(Z)-α-pentylidene-γ-valerolactone

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: (Z)-α-pentylidene-γ-valerolactone
• 英文别名: (Z)-3-pentylidene-5-methyl-dihydro-furan-2-one；(3Z)-5-methyl-3-pentylideneoxolan-2-one
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: BEUIZLAUWLZVEB-TWGQIWQCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.7
• 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：

  methyloxalyl-γ-methyl-γ-butyrolactone sodium salt 、 正戊醛 以 乙醇 为溶剂， 反应 5.0h， 生成 (Z)-α-pentylidene-γ-valerolactone 、 (E)-α-pentylidene-γ-valerolactone
  参考文献：
  名称：

  Cis-3,5-disubstituted-dihydro-furan-2-ones and the preparation and use thereof

  摘要：

  本发明涉及一种改进的工艺，用于制备顺式-3-双烷基甲基甲烷-5-羟基双烷基二氢呋喃-2-酮。本发明还涉及包含对映纯顺式-3-双烷基甲基甲烷-5-羟基二氢呋喃-2-酮的新型物质组合，即（3S,5S）、（3R,5R）、（3S,5R）或（3R,5S）光学纯异构体，并且提供了一种新的、更具成本效益的工艺用于制备这些光学纯异构体。

  公开号：

  US20060030719A1

文献信息

• HYDROFLUOROCARBON REFRIGERANT COMPOSITIONS AND USES THEREOF
  申请人：MINOR HAVILAND BARBARA

  公开号：US20070289317A1

  公开（公告）日：2007-12-20

  Disclosed herein are hydrofluorocarbon refrigerant or heat transfer fluid compositions that are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.

  本文披露了一种在制冷或空调设备中有用的氢氟碳制冷剂或传热流体组合物。本发明的组合物还适用于采用双级压缩机或单板、单通道换热器的离心压缩机设备。
• Stereoselective Synthesis of (<i>E</i>)- or (<i>Z</i>)-α-Alkylidene-γ-butyrolactone from γ-Butyrolactone and Bis[ethoxy(thiocarbonyl)] Disulfide and Mechanistic Studies of the Effect of Metal Complexes on the Stereoselection
  作者：Syuichi Matsui

  DOI：10.1246/bcsj.60.1853

  日期：1987.5

  with an aldehyde to afford exclusively (E)-α-alkylidene-γ-butyrolactone. Interestingly, when the reaction was quenched below −20 °C or when it was carried out in the presence of metal complex such as zinc chloride, copper(I) iodide, or tributyltin chloride, (Z)-α-alkylidene-γ-butyrolactone was obtained as the major product. The stereoselectivity of this reaction was sensitive to the reaction temperature

  在 2.2 当量二异丙基氨基锂 (LDA) 存在下，用双 [乙氧基（硫代羰基）] 二硫化物处理 γ-丁内酯，生成 O-乙基 S-（四氢-2-氧代-3-呋喃基）二硫代碳酸酯的烯醇锂，其反应用醛生成仅 (E)-α-亚烷基-γ-丁内酯。有趣的是，当反应在 -20 °C 以下猝灭或在金属络合物（如氯化锌、碘化铜（I）或氯化三丁基锡、（Z）-α-亚烷基-γ-丁内酯）存在下进行时作为主要产品获得。该反应的立体选择性对反应温度和所用金属阳离子敏感。
• COMPOSITIONS COMPRISING 3,3,4,4,5,5,6,6,6-NONAFLUORO-1-HEXENE
  申请人：Nappa Mario Joseph

  公开号：US20090056349A1

  公开（公告）日：2009-03-05

  Disclosed herein are 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene compositions for use in refrigeration and air conditioning systems, particularly in centrifugal compressor systems. Also disclosed are 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene in combination with at least one bromofluorocarbon, ketones, alcohols, chlorocarbons, ethers, esters, 4-chloro-1,1,2,3,3,4-hexafluorobutene, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof, which are azeotropic or near azeotropic.

  本文揭示了用于制冷和空调系统的3,3,4,4,5,5,6,6,6-九氟-1-己烯组合物，特别是用于离心压缩机系统。还揭示了3,3,4,4,5,5,6,6,6-九氟-1-己烯与至少一种溴氟碳化合物、酮类、醇类、氯碳化合物、醚类、酯类、4-氯-1,1,2,3,3,4-六氟丁烯、N-(二氟甲基)-N,N-二甲基胺或其混合物的组合物，这些是共沸或接近共沸的。
• Compositions comprising a fluoroolefin
  申请人：E. I. Du Pont de Nemours and Company

  公开号：EP1985681A2

  公开（公告）日：2008-10-29

  The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

  本发明涉及用于制冷、空调和热泵系统的组合物，其中组合物包括氟烯烃和至少一种其他成分。本发明的组合物可用于产生冷却或热量的工艺中，也可用作导热液体、泡沫发泡剂、气溶胶推进剂以及灭火剂和灭火剂。
• Compositions Comprising Fluoroolefins and Uses Thereof
  申请人：E. I. du Pont de Nemours and Company

  公开号：EP2295518A2

  公开（公告）日：2011-03-16

  The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential.

  本发明涉及氟烯烃组合物。本发明的氟烯烃组合物可用作制冷剂或传热流体，也可用于产生冷却或热量的工艺中。此外，本发明的氟烯烃组合物可用来替代目前使用的全球变暖潜能值较高的制冷剂或导热油组合物。