(E)-2-亚苄基环辛酮 | 69202-72-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: (E)-2-亚苄基环辛酮
• 英文名称: (E)-2-benzylidene-cyclooctanone
• 英文别名: (2E)-2-benzylidenecyclooctan-1-one
• CAS: 69202-72-8
• 化学式: C₁₅H₁₈O
• 分子量: 214.307
• InChiKey: ADVRWTWVDZKNFF-WYMLVPIESA-N

物化性质

• 熔点：
  75-76 °C(Solv: ethanol (64-17-5))
• 沸点：
  361.9±22.0 °C(Predicted)
• 密度：
  1.039±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (E)-2-亚苄基环辛酮 在 ((4S)-2-(2-(diphenylphosphino)phenyl)-4-tert-butyl-4,5-dihydrooxazole)-(η4-1,5-cyclooctadiene)iridium(I) tetrakis(3,5-bis(trifluoromethyl)phenyl)borate 、 氢气 作用下， 以 甲苯 为溶剂， 20.0 ℃ 、200.0 kPa 条件下， 反应 3.0h， 以94%的产率得到(S)-2-benzylcyclooctanone
  参考文献：
  名称：

  铱催化的不对称加氢反应对光学活性酮的高度对映选择性合成。

  摘要：

  DOI：

  10.1002/anie.200803709
• 作为产物：
  描述：

  (1SR,4RS,5SR)-3-methyl-2-oxa-4-phenyl-3-azabicyclo<6.3.0>undecane 在 sodium hydroxide 作用下， 以 四氢呋喃 为溶剂， 反应 27.0h， 生成 (E)-2-亚苄基环辛酮
  参考文献：
  名称：

  Ring-opening of isoxazolidine nucleus: Competitive formation of α,β-enones and tetrahydro-1,3-oxazines

  摘要：

  Treatment of isoxazolidine derivatives with methyl iodide, followed by simple heating with aqueous NaOH, gives rise to a competitive formation of alpha,beta-enones and tetahydro-1,3-oxazines. The ring-opening process is controlled by the stereochemistry of H-5 which represents the driving factor of two competitive reaction routes.

  DOI：

  10.1016/0040-4020(95)00030-c

文献信息

• A Simple Iron-Catalyst for Alkenylation of Ketones Using Primary Alcohols
  作者：Motahar Sk、Ashish Kumar、Jagadish Das、Debasis Banerjee

  DOI：10.3390/molecules25071590

  日期：——

  acceptor-less dehydrogenative coupling (ADC) of alcohols resulted in the synthesis of a series of important α,β-unsaturated functionalized ketones, having aryl, heteroaryl, alkyl, nitro, nitrile and trifluoro-methyl, as well as halogen moieties, with excellent yields and selectivity. Initial mechanistic studies, including deuterium labeling experiments, determination of rate and order of the reaction, and quantitative

  在此，我们开发了一种简单的铁催化系统，用于使用伯醇对酮进行 α-烯基化。这种醇的无受体脱氢偶联 (ADC) 合成了一系列重要的 α,β-不饱和官能化酮，具有芳基、杂芳基、烷基、硝基、腈和三氟甲基，以及卤素部分，与优良的产率和选择性。进行了初步的机理研究，包括氘标记实验、反应速率和顺序的测定以及 H2 气体的定量测定。整个转化过程产生水和氢作为副产品。
• Expedient synthesis of unsaturated amide alkaloids from <i>Piper</i> spp: Exploring the scope of recent methodology
  作者：George M. Strunz、Heather J. Finlay

  DOI：10.1139/v96-046

  日期：1996.3.1

  The Sakai aryl aldehyde – cyclic ketone aldol – Grob fragmentation sequence was extended to cinnamaldehyde and cyclohexanone, and the product was elaborated to analogues of the alkaloid piperstachine. The effects of substituents on the reaction involving cinnamaldehyde were studied. The aldol-fragmentation sequence failed with benzaldehyde when cyclooctanone or cyclobutanone was substituted for cyclohexanone or cyclopentanone, and the reasons for this failure were examined. Four-carbon Wittig homologation of the piperonal–cyclobutanone aldol-fragmentation product, a hypothetical route to alkaloids such as retrofractamide A, was thus not viable. Instead, three-carbon homologation of the readily available piperonal–cyclopentanone product, using alkyne chemistry recently disclosed by Lu and Trost, afforded these alkaloids in excellent overall yield. The alkyne isomerization was also used to effect efficient syntheses of pellitorine and several other non-aromatic 2E,4E-dienoic Piper amide alkaloids. Key words: Piper, amides, alkaloids, insecticides, aldol, fragmentation, cinnamaldehydes, alkyne, redox, isomerization.

  Sakai芳基醛-环酮Aldol-Grob断裂序列被扩展到肉桂醛和环己酮，并将产物改造为吡啶碱类似物。研究了涉及肉桂醛的反应中取代基的影响。当环辛酮或环丁酮替代环己酮或环戊酮时，苯甲醛无法进行Aldol-断裂序列，对此失败的原因进行了研究。对吡哆醛-环丁酮Aldol-断裂产物进行了四碳Wittig同系化，这是通往碱类如retrofractamide A的假设路线，但该方法并不可行。相反，利用Lu和Trost最近披露的炔化学，对易得的吡哆醛-环戊酮产物进行了三碳同系化，以极高的总产率制备了这些碱类。炔异构化还被用于高效合成辣椒碱和几种其他非芳香2E,4E-二烯酸Piper酰胺类碱类。关键词：Piper、酰胺、碱类、杀虫剂、Aldol、断裂、肉桂醛、炔、氧化还原、异构化。
• A New Lewis Acid System Palladium/TMSCl for Catalytic Aldol Condensation of Aldehydes with Ketones
  作者：Yulin Zhu、Yuanjiang Pan

  DOI：10.1246/cl.2004.668

  日期：2004.6

  catalyzed the aldol condensation reactions of different ketones with aldehydes in the presence of trimethylsilyl chloride (TMSCI). The following reactions were investigated: (1) aromatic aldehydes with cycloalkanones, (2) aromatic aldehydes with aromatic ketones, (3) cycloalkanones with aliphatic aldehydes, and (4) the self-condensation reactions of aliphatic aldehydes and cycloalkanones.

  在三甲基氯硅烷 (TMSCI) 存在下，钯炭有效地催化了不同酮与醛的羟醛缩合反应。研究了以下反应：（1）芳香醛与环烷酮，（2）芳香醛与芳香酮，（3）环烷酮与脂肪醛，以及（4）脂肪醛和环烷酮的自缩合反应。
• Regioselective Synthesis of <i>rac</i>-(1R,4R,6<i>R</i>,6a<i>R</i>)-6′-phenyl-7′,8′-dihydro-1″<i>H</i>,2′<i>H</i>,6′<i>H</i>-dispiro[cycloalkane-1,5′-pyrrolo[1,2-<i>c</i>][1,3]thiazole-4′,3″-indole]-2,2″-diones through 3 + 2 cycloaddition Reaction
  作者：Mahalingam Poornachandran、Mathesan Jayagobi、Raghavachary Raghunathan

  DOI：10.3184/030823409x430158

  日期：2009.4

  Synthesis of a series of novel rac-(1 R,4 R,6 R,6a R)-6′-phenyl-7′,8′-dihydro-1″ H,2′ H,6′ H-dispiro[cycloalkane-1,5′-pyrrolo[1,2- c][1,3]thiazole-4′,3″-indole]-2,2″-diones by cycloaddition reaction is described. The nonstabilised azomethine ylide generated by the reaction of isatin and thiazolidine-2-carboxylic acid has been regioselectively trapped by various substituted benzylidene cycloalkanones.

  一系列新型 rac-(1R,4R,6R,6aR)-6′-苯基-7′,8′-二氢-1″H,2′H,6′H-二螺[环烷-1、5′-吡咯并[1,2-c][1,3]噻唑-4′,3″-吲哚]-2,2″-二酮的环化反应。通过异靛红和噻唑烷-2-羧酸反应生成的非稳定偶氮甲亚胺已被各种取代的亚苄基环烷酮进行了区域选择性俘获。
• Pd(II)-Catalyzed Synthesis of Alicyclic[<i>b</i>]-Fused Pyridines via C(sp²)–H Activation of <i>α,β</i>-Unsaturated <i>N</i>-Acetyl Hydrazones with Vinyl Azides
  作者：Biao Nie、Wanqing Wu、Chuanfei Jin、Qingyun Ren、Ji Zhang、Yingjun Zhang、Huanfeng Jiang

  DOI：10.1021/acs.joc.1c02086

  日期：2022.1.7

  A new synthetic protocol for alicyclic[b]-fused pyridines with complete regioselectivity from α,β-unsaturated N-acetyl hydrazones and vinyl azides via Pd(II)-catalyzed C–H activation/cyclization/aromatization strategy has been described. A series of five- to eight-membered alicyclic[b]-fused pyridines were prepared in a one-step manner with wide substrate scope and good functional group tolerance.

  已经描述了一种通过 Pd(II) 催化的 C-H 活化/环化/芳构化策略从α,β-不饱和N-乙酰腙和乙烯基叠氮化物具有完全区域选择性的脂环族[ b ]-稠合吡啶的新合成方案。一步法制备了一系列具有广泛底物范围和良好官能团耐受性的五至八元脂环[ b ]-稠合吡啶。