3-ethyl-5-methyl-2(3H)-furanone | 119187-90-5

• 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: 3-ethyl-5-methyl-2(3H)-furanone
• 英文别名: (+/-)-3-ethyl-5-methyl-3H-furan-2-one；(+/-)-3-Aethyl-5-methyl-3H-furan-2-on；3-ethyl-5-methyl-3H-furan-2-one
• CAS: 119187-90-5
• 化学式: C₇H₁₀O₂
• 分子量: 126.155
• InChiKey: QPEILBHRIKTZDG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-ethyl-5-methyl-2(3H)-furanone 在 C₅₄H₆₈ClN₄O₂Si₂⁽¹⁺⁾*Br^(1-) 、 potassium hydroxide 作用下， 以 氯仿 为溶剂， 以90 %的产率得到(-)-(R)-3-ethyl-5-methyl-2(5H)-furanone
  参考文献：
  名称：

  Chiral Betaine-Mediated Efficient Organocatalytic Asymmetric Isomerization of β,γ-Unsaturated Butenolides

  摘要：

  摘要使用一种新开发的甜菜碱催化剂，以 0.2-2 摩尔%的负载量对β,γ-不饱和丁烯内酯进行不对称异构化，改进了现有的使用 0.5-2.0 摩尔%催化剂的方法。

  DOI：

  10.1055/s-0042-1751496
• 作为产物：
  描述：

  ethyl-prop-2-ynyl-malonic acid 在 zinc(II) carbonate 作用下， 生成 3-ethyl-5-methyl-2(3H)-furanone
  参考文献：
  名称：

  Zur Kenntnis der Acetylencarbonsäuren. IX. Mitteilung: Die Bildung ungesättigter Lactone aus Alkinsäuren

  摘要：

  DOI：

  10.1002/ardp.19582910505

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。
• [EN] FLUOROSULFONYL sEH INHIBITORS<br/>[FR] INHIBITEURS DE SEH SUBSTITUÉS PAR FLUOROSULFONYLE
  申请人：SCRIPPS RESEARCH INST

  公开号：WO2015188060A1

  公开（公告）日：2015-12-10

  Fluorosulfonyl-substituted sEH inhibitors are compounds represented by Formula (I): wherein R1 is selected from the group consisting of alkyl, heteroalkyi, C5-C12 cycloalkyi, C5-C12 cycloalkylalkyi, C5-C12 cycloalkylheteroalkyi, arylalkyi, arylheteroalkyi, aryl, and heteroaryl; and R1 can be substituted or unsubstituted; P1 is a primary pharmacophore; P2 is a secondary pharmacophore; P3 is a tertiary pharmacophore; and L1 and L2 are linking groups. The subscript m has a value of 0 or 1; n has a value of 0 or 1; and the compound of Formula (I) includes at least one S02F ("fluorosulfonyl") group covalently bonded thereto.

  氟磺酰基取代的sEH抑制剂是由式(I)代表的化合物：其中R1选自烷基、杂原烷基、C5-C12环烷基、C5-C12环烷基烷基、C5-C12环烷基杂原烷基、芳基烷基、芳基杂原烷基、芳基和杂原芳基组成；R1可以是取代或未取代的；P1是一级药效团；P2是二级药效团；P3是三级药效团；L1和L2是连接基。下标m的值为0或1；n的值为0或1；式(I)的化合物至少包含一个与之共价键合的S02F（"氟磺酰基"）基团。
• Asymmetric Olefin Isomerization of Butenolides via Proton Transfer Catalysis by an Organic Molecule
  作者：Yongwei Wu、Ravi P. Singh、Li Deng

  DOI：10.1021/ja205674x

  日期：2011.8.17

  general olefin isomerization was realized via biomimetic proton transfer catalysis with a new chiral organic catalyst. A broad range of mono- and disubstituted β,γ-unsaturated butenolides were transformed into the corresponding chiral α,β-unsaturated butenolides in high enantioselectivity and yield in the presence of as low as 0.5 mol % catalyst. Mechanistic studies have revealed the protonation as the

  通过使用新型手性有机催化剂的仿生质子转移催化，实现了前所未有的对映选择性和通用烯烃异构化。在低至 0.5 mol% 的催化剂存在下，多种单取代和双取代的 β,γ-不饱和丁烯内酯以高对映选择性和产率转化为相应的手性 α,β-不饱和丁烯内酯。机理研究表明质子化是决定速率的步骤。
• Cis-3,5-disubstituted-dihydro-furan-2-ones and the preparation and use thereof
  申请人：Fagan Joseph Paul

  公开号：US20060030719A1

  公开（公告）日：2006-02-09

  The present invention relates to an improved process to prepare cis-3-dihydrocarbylmethano-5-hydrocarbyidihydro-furan-2-ones. The present invention also relates to novel compositions of matter comprising enantiomerically pure cis-3-dihydrocarbylmethano-5-hydrocarbyldihydro-furan-2-ones, being the (3S,5S), (3R,5R), (3S,5R), or (3R,5S) optically pure isomers, and a new, more cost efficient process to prepare said optically pure isomers.

  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。
• Catalytic Asymmetric Direct Vinylogous Aldol Reaction of Isatins with β,γ-Unsaturated Butenolides
  作者：Qiong Tang、Lili Lin、Jie Ji、Haipeng Hu、Xiaohua Liu、Xiaoming Feng

  DOI：10.1002/chem.201704100

  日期：2017.11.21

  An asymmetric direct vinylogous aldol reaction between isatins and β,γ-unsaturated butenolides has been developed with a N,N’-dioxide-Sc(OTf)3 complex as catalyst. A variety of δ-hydroxy butenolides bearing congested adjacent tetrasubstituted stereocenters were obtained in good yields with high diastereoselectivities and excellent enantioselectivities

  已经开发出一种以N，N'-二氧化物-Sc（OTf）3络合物为催化剂的靛红与β，γ-不饱和丁烯内酯之间的不对称直接乙烯基醇醛醇醛缩合反应。以高收率获得了具有高非对映选择性和出色对映选择性的各种带有拥挤的相邻四取代立体中心的δ-羟基丁烯内酯