(E)-1-(4-methoxyphenyl)oct-1-en-3-one | 82297-67-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: (E)-1-(4-methoxyphenyl)oct-1-en-3-one
• 英文别名: 1t-(4-methoxy-phenyl)-oct-1-en-3-one；1t-(4-Methoxy-phenyl)-oct-1-en-3-on
• CAS: 82297-67-4
• 化学式: C₁₅H₂₀O₂
• 分子量: 232.323
• InChiKey: FEHOKBROKRBSBF-JXMROGBWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  17
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 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：

  (E)-1-(4-methoxyphenyl)oct-1-en-3-one 在 monoaluminum phosphate 、 silica gel 、 钯 环己烯 作用下， 反应 3.0h， 以100%的产率得到1-(4-methoxyphenyl)octan-3-one
  参考文献：
  名称：

  Alba, A.; Aramendia, A.; Borau, V., Canadian Journal of Chemistry, 1984, vol. 62, p. 917 - 921

  摘要：

  DOI：
• 作为产物：
  描述：

  氢氧化钡 以81%的产率得到
  参考文献：
  名称：

  GARCIA-RASO, A.;SINISTERRA, J. V.;MARINAS, J. M., POL. J. CHEM., 1982, 56, N 10-12, 1435-1445

  摘要：

  DOI：

文献信息

• Palladium-Catalysed Heck Reactions of Alk-1-en-3-ones with Aryl Bromides: A Very Simple Access to (<i>E</i>)-1-Arylalk-1-en-3-ones
  作者：Mhamed Lemhadri、Yacoub Fall、Henri Doucet、Maurice Santelli

  DOI：10.1055/s-0028-1087976

  日期：——

  When appropriate reaction conditions are used, very high yields of (E)-1-arylalk-1-en-3-one derivatives can be obtained by palladium-catalysed reactions of alk-1-en-3-ones with aryl bromides. The tetraphosphine cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane in combination with [Pd(C3H5)Cl]2 was found to be a very efficient catalyst for this reaction. In general, higher reaction rates were observed with electron-poor aryl bromides, but the electron-rich aryl bromides 1-bromo-4-(dimethylamino)benzene and 4-bromoanisole also led to the arylated enones in high yields. Even with sterically very congested aryl bromides such as 9-bromoanthracene, 1-bromo-2,4,6-trimethylbenzene or 1-bromo-2,4,6-triisopropylbenzene, the expected (E)-1-arylalk-1-en-3-ones were obtained in moderate to good yields. These enones appear to be unstable under the reaction conditions, and the addition of a small amount of hydroquinone to the reaction mixture was found to be crucial, especially for the vinylation of electron-deficient aryl bromides. A variety of alk-1-en-3-ones has been employed, and better results in terms of substrate/catalyst ratios were obtained when oct-1-en-3-one or hex-1-en-3-one was used than when but-1-en-3-one or pent-1-en-3-one was used. It should be noted that several reactions can be performed with as little as 0.1-0.001 mol% catalyst.

  在适当的反应条件下，通过钯催化的alk-1-en-3-ones与芳基溴化物的反应，可以获得高产率的(E)-1-芳基烯-1-烯-3-酮衍生物。铑催化剂中发现四膦配体顺，顺，顺-1,2,3,4-四(二苯膦甲基)环戊烷与[Pd(C3H5)Cl]2结合是一种非常高效的催化剂。通常情况下，电子贫乏的芳基溴化物显示出更高的反应速率，但电子富集的芳基溴化物1-溴-4-(二甲基氨基)苯和4-溴苯甲醚也能导致高产率的芳基化烯酮。即使在空间位阻很大的芳基溴化物如9-溴蒽、1-溴-2,4,6-三甲基苯或1-溴-2,4,6-三异丙基苯的情况下，期望的(E)-1-芳基烯-1-烯-3-酮也能在中等至良好的产率下获得。这些烯酮在反应条件下似乎是不稳定的，在反应混合物中加入少量的氢醌被发现是至关重要的，特别是对于电子缺乏的芳基溴化物的乙烯基化。已使用了多种alk-1-en-3-ones，当使用辛-1-烯-3-酮或己-1-烯-3-酮时，相对于底物/催化剂比例，得到了更好的结果，而不是丁-1-烯-3-酮或戊-1-烯-3-酮。值得注意的是，有几种反应可以在仅0.1-0.001 mol%催化剂的情况下进行。
• A Stereoselective and Practical Synthesis of (E)-α,β-Unsaturated Ketones from Aldehydes
  作者：Evita Balducci、Emanuele Attolino、Maurizio Taddei

  DOI：10.1002/ejoc.201001182

  日期：2011.1

  α,β-Unsaturated ketones can be prepared by reaction of differently substituted β-keto acids and aldehydes. The reaction is carried out under organocatalysis (β-alanine, 0.5 equiv.) and generates the enones with high E selectivity (>95 %). This version of the Verley–Doebner modification of the Knoevenagel reaction is a practical alternative to the classic Horner–Wadsworth–Emmons (HWE) reaction without

  α,β-不饱和酮可以通过不同取代的β-酮酸和醛反应制备。该反应在有机催化（β-丙氨酸，0.5 当量）下进行，并生成具有高 E 选择性（> 95 %）的烯酮。这个版本的 Knoevenagel 反应的 Verley-Doebner 修饰是经典 Horner-Wadsworth-Emmons (HWE) 反应的实用替代方案，不会形成高分子量副产物。该过程使用简单的试剂，可在符合原子经济原理的条件下应用于大规模合成。可以制备不同取代的脂肪族、芳香族或杂芳香族 α,β-不饱和酮。还描述了加氢甲酰化/Verley-Doebner Knoevenagel 伸缩过程的一个例子。
• Gallium(III) Chloride Catalyzed Stereoselective Synthesis of <i>E</i>-Configured α,β-Unsaturated Ketones
  作者：J. Yadav、B. Reddy、Manoj Gupta、Uttam Dash、Sushil Pandey

  DOI：10.1055/s-2007-970760

  日期：2007.3

  A simple and highly stereoselective method has been developed for the synthesis of E-configured α,β-unsaturated ketones using gallium(III) chloride as a novel catalyst. This new procedure offers significant advantages such as high conversions, short reaction times and enhanced E-selectivity together with mild reaction conditions.

  已经开发了一种简单且高度立体选择性的方法，用于使用氯化镓 (III) 作为新型催化剂合成 E 构型的 α,β-不饱和酮。这种新方法具有显着的优势，例如高转化率、短反应时间和增强的 E 选择性以及温和的反应条件。
• One single catalyst, Pd(OAc)2, for two sequential very different steps: allylic alcohol oxidation–Heck reaction. Access to functionalised α,β-unsaturated ketones
  作者：Frédéric Batt、Christel Gozzi、Fabienne Fache

  DOI：10.1039/b810538c

  日期：——

  A single addition of the catalyst, Pd(OAc)2, was realised to mediate two transformations as different as allylic alcohol oxidation under O2 and C–C bond formation of the Heck type, to give substituted α,β-unsaturated ketones without intermediate purification.

  催化剂 Pd(OAc)2 的单次添加可介导两种不同的转化，如 O2 下烯丙醇氧化和 Heck 型 C-C 键形成，从而得到取代的 α,β-不饱和酮，而无需中间纯化。
• An Improved Procedure for the Claisen-Schmidt Reaction
  作者：J. V. Sinisterra、A. Garcia-Raso、J. A. Cabello、J. M. Marinas

  DOI：10.1055/s-1984-30882

  日期：——