4-oxo-heptanal | 74327-28-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-oxo-heptanal
• 英文别名: 4-Oxoheptanal
• CAS: 74327-28-9
• 化学式: C₇H₁₂O₂
• 分子量: 128.171
• InChiKey: RDNQSMOUXRNNSI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  9
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-oxo-heptanal 在 sodium hydroxide 作用下， 以 乙醚 为溶剂， 反应 72.0h， 以89%的产率得到2-乙基-环戊-2-烯酮
  参考文献：
  名称：

  Synthesis of 2-Alkyl-2-cyclopenten-1-ones. A Versatile Kinetic Alkylation-Ozonolysis Procedure for the Preparation of γ-Ketoaldehydes

  摘要：

  一系列2-烷基-2-环戊烯-1-酮类化合物，包括前列腺素前体2-(6-甲氧羰基己基)-2-环戊烯-1-酮和茉莉酮前体2-[(Z)-2-戊烯基]-2-环戊烯-1-酮，已通过一条简短的合成路径制备。该路径始于6-甲基-5-庚烯-2-酮，并通过动力学烷基化-臭氧化过程生成关键的1,4-酮醛中间体。

  DOI：

  10.1055/s-1989-27330
• 作为产物：
  描述：

  丙位庚内酯 在 lithium aluminium tetrahydride 、 pyridinium chlorochromate 作用下， 生成 4-oxo-heptanal
  参考文献：
  名称：

  Synthesis and Occurrence of Oxoaldehydes in Used Frying Oils

  摘要：

  As part of our efforts to identify volatile decomposition products in used frying oils, a series of 4- and 5-oxoaldehydes were synthesized, purified, and characterized by gas chromatography, gas chromatography-mass spectrometry, gas chromatography-Fourier transform infrared spectrometry, and nuclear magnetic resonance spectrometry. Oxoaldehydes have been proposed as possible precursors of alkylfurans, which have potential anticancer effects. In a model reaction 4-oxononanal was refluxed in hexane for 40 days and only trace amounts of 2-pentylfuran were produced, suggesting that it is not a major precursor of the furan. The volatile constituents of used frying oils obtained from commercial food processors were studied, and 4-oxohexanal, 4-oxooctanal, 4-oxononanal, and 4-oxodecanal were identified.

  DOI：

  10.1021/jf00049a006

文献信息

• Neighboring group participation in Lewis acid-promoted [3 + 4] and [3 + 5] annulations. The synthesis of oxabicyclo[3.n.1]alkan-3-ones
  作者：Gary A. Molander、Kimberly O. Cameron

  DOI：10.1021/ja00056a002

  日期：1993.2

  2-(alkoxycarbon)-m-oxabicyclo[3.n.1]alkan-3-ones can be constructed by this process in which two new carbon-carbon bonds are generated. Unusually high regioncontrol is observed, and good to excellent stereochemical control can be achieved at virtually every position on the new carbocycles. Intramolecular neighboring group participation is proposed to explain the unusually high selectivities attained in the annulation

  路易斯酸用作 1,4- 和 1,5- 二羰基亲电试剂与 β-二酮和 β-酮酯的双（三甲基甲硅烷基）烯醇醚环化的催化剂。多种 2-(烷氧基碳)-m-氧杂双环[3.n.1]alkan-3-ones 可以通过该过程构建，其中产生两个新的碳-碳键。观察到异常高的区域控制，并且几乎可以在新碳环的每个位置实现良好到出色的立体化学控制。提出分子内相邻基团参与来解释在环化反应中获得的异常高的选择性
• Milieux hyperbasiques
  作者：M. Larchevêque、G. Valette、Th. Cuvigny

  DOI：10.1016/0040-4020(79)88003-5

  日期：1979.1

  Substituted γ and δ-ketoaldehydes may be conveniently synthesized in two steps from imine carbanions, which are obtained by reaction with hyperbasic media. These anions are stable at low temperature (−30°); they react with functional electrophiles to afford masked ketoaldehydes which may be cyclised into various cyclopentenones or cyclohexenones.

  取代的γ和δ-酮醛可以方便地从亚胺碳负离子分两步合成，亚胺碳负离子是通过与高碱性介质反应而获得的。这些阴离子在低温（−30°）下稳定；它们与功能性亲电试剂反应，得到被掩蔽的酮醛，可以将其环化成各种环戊烯酮或环己烯酮。
• A New and Convenient Method of Synthesis of γ-Ketoaldehydes
  作者：O. G. Kulinkovich、I. G. Tischenko、V. L. Sorokin

  DOI：10.1055/s-1985-31427

  日期：——

  A new synthesis of 4-oxoalkanals starting from acid chlorides and allyl chloride proceeding via alkyl 2,3-dichloropropyl ketones, alkyl 3-chloropropenyl ketones, alkyl 3-chloro-2-methoxypropyl ketones, and 1-alkanoyl-2-methoxycyclopropanes is described.

  描述了一种从酸氯化物和烯丙基氯出发的新合成方法，生成4-氧烷醛，该过程涉及烷基2,3-二氯丙酮、烷基3-氯丙烯酮、烷基3-氯-2-甲氧基丙酮以及1-烷酰基-2-甲氧基环丙烷的中间体。
• A General Synthesis of (±)-γ-Substituted γ-Butyrolactones Using a Kinetic Alkylation-Ozonolysis Procedure
  作者：Dermot J. Gavin、Niall W. A. Geraghty

  DOI：10.1080/00397919408011738

  日期：1994.5

  Abstract A synthesis of (±)-γ-substituted γ-butyrolactones is described in which the key intermediates, γ-ketoesters, are prepared from the readily available 6-methyl-5-hepten-2-one using a kinetic alkylation-ozonolysis procedure; the method allows terminal ester and Z-alkene groups to be incorporated into the side-chain and thus can be used for the synthesis of (±)-γ-jasmolactone as well as other

  摘要描述了 (±)-γ-取代的 γ-丁内酯的合成，其中关键中间体 γ-酮酯是使用动力学烷基化 - 臭氧分解程序从容易获得的 6-methyl-5-hepten-2-one 制备的; 该方法允许将末端酯和 Z-烯烃基团并入侧链，因此可用于合成 (±)-γ-茉莉酮内酯以及其他天然存在的内酯。
• Excellent Aldehyde and Ketone Selectivity in Chromium(II)-Mediated Reformatsky Reactions
  作者：Ludger Wessjohann、Harry Wild

  DOI：10.1055/s-1997-3239

  日期：1997.6

  The chromium Reformatsky reaction allows the highly chemoselective addition of ester enolates to aldehydes or methyl ketones at room temperature. Aldehyde selectivities of ≥ 50:1 vs. methyl ketones and ≥ 200:1 vs. larger ketones and other electrophiles can be achieved in most cases. Methyl ketones are preferred with similar effectivity against higher ketones. Effects of solvents, lithium iodide and substituents are discussed.

  铬 Reformatsky 反应允许在室温下将酯烯醇化物高度化学选择性地加成到醛或甲基酮上。在大多数情况下，与甲基酮相比，醛选择性≥ 50:1，与较大酮和其他亲电试剂相比，醛选择性≥ 200:1。优选甲基酮，其对高级酮具有相似的功效。讨论了溶剂、碘化锂和取代基的影响。