Methyl 3-oxo-4-pentenoate | 37734-05-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: Methyl 3-oxo-4-pentenoate
• 英文别名: methyl 3-oxopent-4-enoate
• CAS: 37734-05-7
• 化学式: C₆H₈O₃
• 分子量: 128.128
• InChiKey: ZQUPQDCVMAQIKI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  Methyl 3-oxo-4-pentenoate 在 palladium on activated charcoal 盐酸 、 sodium tetrahydroborate 、 1,4-diazabicyclo[5.4.0]-7-undecene 、 硫酸 、 氢气 作用下， 以 甲醇 为溶剂， 70.0 ℃ 、101.33 kPa 条件下， 反应 44.33h， 生成 育亨宾
  参考文献：
  名称：

  Total syntheses of yohimbe alkaloids, with stereoselection for the normal, allo, and 3-epiallo series, based on annelations of 4-methoxy-1,2-dihydropyridones

  摘要：

  N-[2-(1H-3-indolyl)ethyl]-2,3-dihydro-4-pyridone (31) was generated in two steps (77% yield) from tryptamine and N-methyl-4-piperidone methiodide. Its cyclization (90% yield) and oxidation (91% yield) provided the tetracyclic analogue 32. O-Methylation and Robinson-type annelation of these vinylogous lactams (the latter in form of its N(a)-carbamate) furnished the dienones 38 (64%) and 43 (90%). Further elaboration by cyclization and/or reduction reactions selectively provided the 15,16-didehydroyohimbinones 7 or 44. Their reductions then led to yohimbinone (52, 20% overall yield from tryptamine), alloyohimbinone (11, 19% overall yield), and 3-epi-alloyohimbinone (10, 23% overall yield), which led to yohimbine (3), beta-yohimbine (9), 3-epi-alloyohimbine (53), and 3-epi-17-epi-alloyohimbine (54).

  DOI：

  10.1021/jo00008a025
• 作为产物：
  描述：

  3-hydroxypent-4-enoic acid methyl ester 在 chromium(VI) oxide 、 硫酸 作用下， 以 丙酮 为溶剂， 反应 18.0h， 以55%的产率得到Methyl 3-oxo-4-pentenoate
  参考文献：
  名称：

  (+)-Calvine 的简明对映特异性合成

  摘要：

  我们在此报告了从 (R)-表氯醇以九个步骤有效地对映体特异性合成 (+)-calvine。收敛合成基于手性高​​烯丙胺和烯酮的烯烃交叉复分解 (CM) 反应。随后顺式-2,6-二取代哌啶中间体的还原环化和内酯化以良好的产率提供产物。

  DOI：

  10.1055/s-2006-926267

文献信息

• Expedient and Diastereodivergent Assembly of Terpenoid Decalin Subunits having Quaternary Stereocenters through Organocatalytic Robinson Annulation of Nazarov Reagent
  作者：Barbara Berkes、Kristóf Ozsváth、Laura Molnár、Tamás Gáti、Tamás Holczbauer、György Kardos、Tibor Soós

  DOI：10.1002/chem.201604541

  日期：2016.12.12

  report an expedient approach to highly functionalized cis‐ and trans‐decalines that could function as key structural subunits toward the synthesis of various classes of terpenoids. Key to the strategy is an organocatalyzed Robinson annulation reaction of the Nazarov reagent that affords chiral enone building blocks with high enantioselectivities. The quaternary carbon stereogenic center can direct the subsequent

  我们报告了权宜的方法，对高度功能化的顺式和反式十氢化萘可作为合成各种类萜的关键结构亚基。该策略的关键是纳扎罗夫试剂的有机催化罗宾逊环化反应，该反应可提供具有高对映选择性的手性烯酮结构单元。季碳立体成因中心可以指导后续反应，并允许快速，非对映地组装具有连续立体中心的复杂十氢化萘。
• [EN] TOTAL SYNTHESIS OF ARTEMISININ<br/>[FR] SYNTHÈSE TOTALE D'ARTÉMISININE
  申请人：UNIV INDIANA RES & TECH CORP

  公开号：WO2012154906A1

  公开（公告）日：2012-11-15

  The present invention provides a method for manufacturing artemisinin and its congeners from cyclohexenone as a starting material.

  本发明提供了一种从环己烯酮作为起始物质制造青蒿素及其同系物的方法。
• A Three-Component Coupling Approach to Cyclopentanoids
  作者：Barry M. Trost、Anthony B. Pinkerton

  DOI：10.1021/jo010593b

  日期：2001.11.1

  A new approach to 2,3-disubstituted cyclopentenones has been developed. This approach consists of a two-step protocol involving the cyclization of a Z-vinyl bromide under Barbier type conditions to form a cyclopentenol, which is then oxidatively rearranged to generate the cyclopentenone. The Z-vinyl bromide is in turn derived from a ruthenium catalyzed three-component coupling of an alkyne, an enone

  已经开发出一种新的2，3-二取代的环戊烯酮的方法。该方法由两步方案组成，涉及在Barbier型条件下将Z-乙烯基溴化物环化以形成环戊烯醇，然后将其氧化重排以生成环戊烯酮。Z-乙烯基溴化物又衍生自炔烃，烯酮和HBr等价物的钌催化的三组分偶联。已经产生了各种2，3-二取代的环戊烯酮，包括茉莉酮和二氢茉莉酮的短合成。该策略的进一步适用性在四氢二烯酮B，罗沙前列醇和选择性COX-2抑制剂的总合成中显示。
• Bismuth Triflate-Catalyzed Addition of Allylsilanes to N-Alkoxycarbonylamino Sulfones: Convenient Access to 3-Cbz-Protected Cyclohexenylamines
  作者：Thierry Ollevier、Zhiya Li

  DOI：10.1002/adsc.200900710

  日期：2009.12

  Bismuth triflate was found to be an efficient catalyst in the Sakurai reaction of allyltrimethylsilanes with N-alkoxycarbonylamino sulfones. The reaction proceeded smoothly with a low catalyst loading of Bi(OTf)3⋅4 H2O (2–5 mol%) to afford the corresponding protected homoallylic amines in very good yields (up to 96%). A sequential allylation reaction followed by ring-closing metathesis delivers 6–8

  发现三氟甲磺酸铋是烯丙基三甲基硅烷与N-烷氧基羰基氨基砜的Sakurai反应的有效催化剂。该反应的Bi的低催化剂载量（OTF）顺利进行3 ⋅4ħ 2 O（2-5摩尔％），得到相应的保护的高烯丙基胺在非常好的产率（最高至96％）。顺序的烯丙基化反应，然后进行闭环复分解，得到6-8元3-Cbz保护的环烯基胺。
• Enantioselective Annulation Using Nazarov Reagent: Synthesis of (+)-Preoleanatetraene
  作者：Alejandro F. Barrero、Simeón Arseniyadis、José F. Moral、M. Mar Herrador、Antonio Rosellón

  DOI：10.1055/s-2005-864798

  日期：——

  The enantioselective synthesis of preoleanatetraene (1) has been accomplished via a convergent approach of two C-15 synthons. The key step of this synthesis has been an interesting enantio­selective variant of the Robinson annulation using the Nazarov reagent and a chiral enamine to obtain the bicyclic moiety A. This asymmetric methodology opens the access to other irregular triterpene skeletons whose biogenetic implication should not be underestimated.

  预奥利烯四烯（1）的对映选择性合成已通过两种C-15合成单元的汇聚性方法完成。该合成的关键步骤是使用奈萨洛夫试剂和手性烯胺进行的一种有趣的对映选择性罗宾逊环化反应，以获得双环结构A。这种不对称方法学为其他不规则三萜骨架的获取提供了可能，其生物合成的意义不容小觑。