methyl 4-(4-methoxyphenyl)-4-oxobut-2-ynoate

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl 4-(4-methoxyphenyl)-4-oxobut-2-ynoate
• 英文别名: Methyl 3-(4-methoxybenzoyl)propiolate
• 化学式: C₁₂H₁₀O₄
• 分子量: 218.209
• InChiKey: JKGUUADORVKPOJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  methyl 4-(4-methoxyphenyl)-4-oxobut-2-ynoate 在 二乙胺基三氟化硫 作用下， 以 乙醇 为溶剂， 反应 6.0h， 以25%的产率得到methyl 4,4-difluoro-4-(4-methoxyphenyl)but-2-ynoate
  参考文献：
  名称：

  具有宝石二氟化侧链的新型γ-内酰胺的合成

  摘要：

  已经设计了一种短而有效的方法来合成新的 γ-内酰胺，其特征是位置 4 的双氟侧链。关键步骤包括硝基烷阴离子在亲电双氟烯烃上的 1,4-加成，然后是级联反应硝基还原-杂环化。这种灵活的策略还允许在 3 位或 5 位轻松引入取代基。

  DOI：

  10.1055/s-0039-1690715
• 作为产物：
  描述：

  methyl 4-hydroxy-4-(4-methoxyphenyl)but-2-ynoate 在 Jones reagent 作用下， 以 丙酮 为溶剂， 以93%的产率得到methyl 4-(4-methoxyphenyl)-4-oxobut-2-ynoate
  参考文献：
  名称：

  具有宝石二氟化侧链的新型γ-内酰胺的合成

  摘要：

  已经设计了一种短而有效的方法来合成新的 γ-内酰胺，其特征是位置 4 的双氟侧链。关键步骤包括硝基烷阴离子在亲电双氟烯烃上的 1,4-加成，然后是级联反应硝基还原-杂环化。这种灵活的策略还允许在 3 位或 5 位轻松引入取代基。

  DOI：

  10.1055/s-0039-1690715

文献信息

• Propiolophenone derivatives
  申请人：Hoffman-La Roche Inc.

  公开号：US04929741A1

  公开（公告）日：1990-05-29

  Propiolophenone derivatives of the formula ##STR1## wherein R.sup.6 is hydrogen, lower alkyl or a group of the formula ##STR2## as well as corresponding hydroxy compounds of the formula ##STR3## wherein R.sup.6' is hydrogen, lower alkyl, a group of formula (a), (b), (c), (d) or (e) or a group of the formula --C(R.sup.14)(R.sup.15)OR.sup.16' (f'): exhibit mucosa-protective and/or gastric acid secretion-inhibiting properties, such that they can be used for the control or prevention of illnesses of the gastrointestinal tract, especially against gastric ulcers and/or duodenal ulcers.

  Propiolophenone衍生物的化学式为##STR1##其中R.sup.6是氢、较低的烷基或化学式##STR2##的基团，以及相应的羟基化合物的化学式##STR3##其中R.sup.6'是氢、较低的烷基、化学式(a)、(b)、(c)、(d)或(e)的基团或化学式--C(R.sup.14)(R.sup.15)OR.sup.16' (f')：表现出保护粘膜和/或抑制胃酸分泌的特性，因此可以用于控制或预防消化道疾病，特别是对抗胃溃疡和/或十二指肠溃疡。
• Development and Application of Pyridinium 1,4-Zwitterionic Thiolates: Synthesis of Polysubstituted Thiophenes
  作者：Bin Cheng、Xiaoguang Duan、Yuntong Li、Xinping Zhang、Hui Li、Fufang Wu、Yun Li、Taimin Wang、Hongbin Zhai

  DOI：10.1002/ejoc.202000165

  日期：2020.3.31

  Pyridinium 1,4‐zwitterionic thiolates as a class of sulfur‐containing synthons were applied to a [3+2] cascade cyclization reaction with activated alkynes, affording a library of polysubstituted thiophenes with excellent regioselectivities, especially those bearing multifarious fluorine‐containing groups.

  1,4-两性离子硫醇吡啶鎓盐作为一类含硫合成子被用于与活化炔烃的[3 + 2]级联环化反应，从而提供了具有良好区域选择性的多取代噻吩文库，尤其是那些带有多个含氟基团的噻吩。
• Multicatalytic, asymmetric Michael/Stetter reaction of salicylaldehydes and activated alkynes
  作者：Claire M. Filloux、Stephen P. Lathrop、Tomislav Rovis

  DOI：10.1073/pnas.1002830107

  日期：2010.11.30

  We report the development of a multicatalytic, one-pot, asymmetric Michael/Stetter reaction between salicylaldehydes and electron-deficient alkynes. The cascade proceeds via amine-mediated Michael addition followed by an N -heterocyclic carbene-promoted intramolecular Stetter reaction. A variety of salicylaldehydes, doubly activated alkynes, and terminal, electrophilic allenes participate in a one-step or two-step protocol to give a variety of benzofuranone products in moderate to good yields and good to excellent enantioselectivities. The origin of enantioselectivity in the reaction is also explored; E / Z geometry of the reaction intermediate as well as the presence of catalytic amounts of catechol additive are found to influence reaction enantioselectivity.

  我们报道了一种多催化剂、一锅法、不对称的Michael/Stetter反应，用于将水杨醛和电子不足的炔烃进行级联反应。该反应级联进行，首先通过胺介导的Michael加成，然后通过一种N-杂环卡宾促进的分子内Stetter反应。多种水杨醛、双重活化的炔烃和末端亲电性烯烃参与了一步或两步的反应，产率中等至良好，对映选择性良好至优异，得到了多种苯并呋喃酮产物。还探讨了反应对映选择性的起源；反应中间体的E/Z几何构型以及催化量的邻苯二酚添加剂的存在被发现会影响反应的对映选择性。
• PROCESS FOR PRODUCING LIGNAN COMPOUND
  申请人：SHIONOGI & CO., LTD.

  公开号：EP0646570A1

  公开（公告）日：1995-04-05

  A process for regioselectively producing a lignan compound of general formula (I) by reacting a lactone compound of general formula (II) with a compound of the formula: R⁷Cl (R⁷ being a tri(lower alkyl)silyl group) in the presence of a base, effecting the addition reaction of an acetylene compound of general formula (III) with the resultant compound, and reducing the product. In said formulas R¹ represents alkyl, cycloalkyl, cycloalkyl-lower alkyl, aralkyl, etc.: R² and R³ each represent lower alkoxy, etc.; R⁴ represents lower alkoxy or hydrogen; and R⁵ and R⁶ each represent lower alkyl.

  一种通过通式(II)的内酯化合物与通式为R⁷Cl（R⁷为三（低级烷基）硅烷基）在碱存在下反应，使通式（III）的炔化合物与生成的化合物发生加成反应，并还原产物。在所述通式中，R¹代表烷基、环烷基、环烷基-低级烷基、芳基等：R²和R³各自代表低级烷氧基等；R⁴代表低级烷氧基或氢；R⁵和R⁶各自代表低级烷基。
• Synthesis of Fluorenone and Anthraquinone Derivatives from Aryl- and Aroyl-Substituted Propiolates
  作者：Florian Pünner、Justin Schieven、Gerhard Hilt

  DOI：10.1021/ol4023276

  日期：2013.9.20

  Fluorenone derivatives were generated from aryl-substituted propiolates via a cobalt-catalyzed Diels-Alder reaction/DDQ-oxidation and Friedel-Crafts-type cyclization. Several functional groups are tolerated, and good to excellent overall yields (up to 89%) could be achieved. For the synthesis of anthraquinone derivatives, aroyl-substituted propiolates were applied in a zinc iodide catalyzed Die Is Alder reaction with 1,3-dienes. The subsequent DDQ oxidation and Friedel-Crafts-type cyclization led to symmetrical as well as some unsymmetrical anthraquinones in good to excellent yields of up to 87% over the three-step reaction sequence.