ethyl 3-hydroperoxy-2-methylenebutanoate | 100841-11-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl 3-hydroperoxy-2-methylenebutanoate
• 英文别名: Ethyl 3-hydroperoxy-2-methylidenebutanoate
• CAS: 100841-11-0
• 化学式: C₇H₁₂O₄
• 分子量: 160.17
• InChiKey: VOAPBZHLMURUON-UHFFFAOYSA-N

物化性质

• 沸点：
  58-62 °C(Press: 0.08 Torr)
• 密度：
  1.091±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  55.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl 3-hydroperoxy-2-methylenebutanoate 在 过氧化乙酸叔丁酯 、 对甲苯磺酸 作用下， 以 苯 为溶剂， 反应 12.0h， 生成 ethyl 2,3-epoxy-2-(2-methylpropyl)butanoate
  参考文献：
  名称：

  Intramolecular Homolytic Displacements. 24. Simple Access to Glycidic Esters via Induced Decomposition of Peroxyketals Derived from Ethyl 2-(1-Hydroperoxyethyl)propenoate

  摘要：

  The synthetic potential of the homolytic-induced decomposition of peroxyketals peroxyketals derived from ethyl 2-(1-hydroperoxyethyl)propenoate to access glycidic esters was demonstrated. The propagation step of this free radical chain reaction proceeds via the addition of an alkyl radical to the double bond followed by S(H)i on the peroxidic bond with the production of an oxy radical, regenerating rapidly by beta-elimination the alkyl radical responsible for the induced reaction, These reactions of elimination produce two fragments, an alkyl radical and an ester molecule, from linear ''acetalic'' radical, or they could be isomerizations in the case of cyclanyloxy radicals. In these last cases, the isomerization creates an ester function corresponding to a new protected functionality as aldehyde, acid, or alcohol.

  DOI：

  10.1021/jo00096a018
• 作为产物：
  描述：

  惕各酸乙酯 在 tetraphenylporphyrin 、 二甲基硫 作用下， 以 氘代氯仿 为溶剂， 反应 12.0h， 生成 ethyl 3-hydroperoxy-2-methylenebutanoate
  参考文献：
  名称：

  单线态氧的烯-二烯传递性环加成反应：乙烯基宝石效应及其在二烯多氧官能化中的应用

  摘要：

  将模型化合物1b – d的单重态氧反应性和区域选择性与双（选择性）钛酸乙酯（1a）的单线态氧反应性和区域选择性进行了比较。tiglate / angelate系统1a / 1a'的动力学顺式效应为k E / k Z = 5.2，而高宝石区域选择性没有变化。与乙烯基的进一步缀合使得能够进行模式选择过程，即，[4 + 2]环加成对烯反应。对于二烯1e – g，研究了甲基化对烯键反应的模式选择性和区域选择性的位点特异性影响。。分别对γ，δ-二甲基化和α，γ，δ-三甲基化的底物1h和1i观察到乙烯基类宝石效应。相应的苯基化底物1j - 1显示出相似的模式选择性，因为单甲基化1j仅表现出[4 + 2]反应性，而串联产物12和14分别从二甲基化和三甲基化底物1k和1l中分离出来。乙烯基类宝石效应有利于从底物形成1,3-二烯，因此，观察到二次单线态氧的添加产生了氢过氧-1,2-二氧六环19和20以烯-二

  DOI：

  10.1021/jo5000434

文献信息

• Regioselective Synthesis of 2-Hydroperoxy-2-methylenebutanoic Acid Derivatives via Photooxygenation of Tiglic Acid Derivatives
  作者：Waldemar Adam、Axel Griesbeck

  DOI：10.1055/s-1986-31871

  日期：——

  Photooxygenation of (E)-2-methyl-2-butenoic acid derivatives (tiglic acid derivatives) in tetrachloromethane in the presence of catalytic amounts of tetraphenylporphine affords 3-hydroperoxy-2-methylenebutanoic derivatives in generally high yields. Acid-catalyzed cyclodehydration of the 3-hydroperoxy-2-methylenebutanoic acid thus obtained readily gives 5-methyl-4-methylene-3-oxo-1,2-dioxolane, a peroxylactone, in 61% yield. The analogous cyclodehydration of 3-hydroperoxy-2-methylenebutanal [generated in situ by oxygenation of (E)-2-methyl-2-butenal] leads to the formation of 3-hydroxy-5-methyl-4-methylene-1, 2-dioxolane.

  在四苯基卟啉催化剂存在下，将(E)-2-甲基-2-丁烯酸衍生物（虎尾草酸衍生物）在四氯化碳中进行光氧化反应，通常可以高产率地得到3-羟基过氧-2-亚甲基丁酸衍生物。通过酸催化的环脱水反应，所获得的3-羟基过氧-2-亚甲基丁酸容易生成5-甲基-4-亚甲基-3-氧代-1,2-二氧杂环戊烷（一种过氧内酯），产率为61%。类似地，通过将(E)-2-甲基-2-丁烯醛就地氧化生成的3-羟基过氧-2-亚甲基丁醛进行环脱水反应，则生成3-羟基-5-甲基-4-亚甲基-1,2-二氧杂环戊烷。
• Singlet Oxygen Photo-Oxygenation in Water/Pluronic F-127 Hydrogels: Increased Reaction Efficiency Coupled with a Switch in Regioselectivity
  作者：Axel G. Griesbeck、Johannes Uhlig、Thomas Sottmann、Lhoussaine Belkoura、Reinhard Strey

  DOI：10.1002/chem.201202296

  日期：2012.12.7

  efficient microenvironments for photochemical reactions, as demonstrated for singlet oxygen reactions of monoalkenes. Nonpolar substrates are localized in the nanosized polymer compartment, which can be visualized by neutron scattering. The efficiency of 1O2 reactions is strongly increased for tiglate derivatives and the regioselectivity of the ene reaction of trisubstituted alkenes is completely switched

  Pluronic F-127水凝胶是光化学反应的高效微环境，正如单烯烃的单线态氧反应所证明的那样。非极性基质位于纳米级聚合物隔室中，可以通过中子散射将其可视化。tiglate衍生物的1 O 2反应效率大大提高，与溶液相相比，三取代烯烃的烯反应的区域选择性完全切换，与沸石内光氧合相比，其区域选择性完全反转。
• Synthesis of methacrylic-type peroxidic compounds and study of their homolytic induced decomposition in solution
  作者：Daniel Colombani

  DOI：10.1016/s0040-4020(96)01180-5

  日期：1997.2

  unsaturated peroxidic compounds have been prepared, characterized and inductively decomposed in various solvents to afford the corresponding oxiranes. The reaction proceeded by a radical chain mechanism and was initiated either by thermolysis of added t-butyl peracetate at 110°C or AIBN at 80°C, or by autoxidation of BEt3 at 20°C. The studied peroxyderivatives were designed to generate oxyl radicals reacting

  已经制备了各种不饱和的过氧化物，对其进行了表征并在各种溶剂中进行了感应分解，从而提供了相应的环氧乙烷。该反应通过自由基链机理进行，并且通过添加的过乙酸叔丁基酯在110℃或AIBN在80℃下热解或在20℃下BEt 3的自氧化来引发。所研究的过氧衍生物被设计为产生羟基，该羟基通过异构化反应（例如分子内1，5-氢原子转移，环状结构的环化或β断裂），断裂或氢原子转移至溶剂中而生成官能烷基。
• Sustainable photochemistry: solvent-free singlet oxygen-photooxygenation of organic substrates embedded in porphyrin-loaded polystyrene beadsDedicated to Professor Waldemar Adam on the occasion of his 65th birthday and his retirement from the stage of photooxygenation chemistry.
  作者：Axel G. Griesbeck、Anna Bartoschek

  DOI：10.1039/b204017d

  日期：2002.7.11

  A solvent-free photooxygenation process that uses organic substrates embedded in porphyrin-loaded polystyrene beads as solid support is described and applied for ene- and [4+2]-cycloaddition reactions involving singlet oxygen (1Δg).

  描述了一种无溶剂的光氧化过程，该过程使用嵌入铝卟啉负载聚苯乙烯珠的有机底物作为固体支撑，并应用于涉及单态氧 (1Δg) 的烯烃反应和 [4+2] 环加成反应。
• A Family of New 1,2,4-Trioxanes by Photooxygenation of Allylic Alcohols in Sensitizer-Doped Polymers and Secondary Reactions
  作者：Axel G. Griesbeck、Anna Bartoschek、Tamer T. El-Idreesy、Lars-Oliver Höinck、Johann Lex、Claus Miara、Jörg M. Neudörfl

  DOI：10.1055/s-2005-872103

  日期：——

  Type II photooxygenation (singlet oxygen) is described as a synthetically useful way for the preparation of allylic hydro­peroxides and endoperoxides using sensitizer-adsorbed or covalently sensitizer-doped polymeric (macro- or nanosized) containers. Facilitated product separation and purification as well as increased reactivity are advantages of these techniques in comparison with solution-phase photochemistry. The products generated by Type II photooxygenation have been used for the syntheses of numerous polycyclic peroxides with a common 1,2,4-trioxane core as exhibited in the natural antimalarial artemisinin.

  II型光氧化（单重态氧）被描述为一种合成上有用的方法，用于通过感光剂吸附或共价掺杂感光剂的聚合物（宏观或纳米尺寸）容器合成烯丙基过氧化氢和端过氧化物。这些技术相比于溶液相光化学的优点在于可以促进产物的分离和纯化，并提高反应活性。通过II型光氧化生成的产物已被用于合成众多具有共同1,2,4-三氧烯核心的多环过氧化物，这在天然抗疟药青蒿素中得到了体现。