ethyl 2-oxo-4-phenylbut-3-ynoate | 1619-73-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl 2-oxo-4-phenylbut-3-ynoate
• 英文别名: ethyl 2-oxo-4-phenyl-3-butynoate
• CAS: 1619-73-4
• 化学式: C₁₂H₁₀O₃
• 分子量: 202.21
• InChiKey: XFVPFMQSFVCXOQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 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：

  ethyl 2-oxo-4-phenylbut-3-ynoate 以 乙醚 为溶剂， 生成 4-phenyl-4-phenylamino-buten-3-saeure
  参考文献：
  名称：

  Chauvelier,J., Bulletin de la Societe Chimique de France, 1966, p. 1721 - 1726

  摘要：

  DOI：
• 作为产物：
  描述：

  Ethyl 2-(benzotriazol-1-yl)-2-ethoxy-4-phenyl-3-butynoate 在 盐酸 作用下， 以 丙酮 为溶剂， 反应 0.33h， 以90%的产率得到ethyl 2-oxo-4-phenylbut-3-ynoate
  参考文献：
  名称：

  Novel and Convenient Routes to Functionalized Alkynyl Ketones from 1-(Benzotriazol-1-yl)propargyl Ethyl Ethers

  摘要：

  1-(Benzotriazol-1-yl)propargyl ethyl ethers, readily accessible from propargyl aldehyde diethyl acetals and benzotriazole, undergo smooth Lithiation at the methine carbon and subsequent reactions with alkyl halides, aldehydes, ketones, imines, esters, trialkylsilyl chlorides, dialkyl carbonates, and isocyanates to yield the corresponding substituted ethers. Hydrolysis of these intermediates under acidic conditions affords a wide variety of alkynyl ketones bearing hydroxy, amino, acyl, trimethylsilyl, alkoxycarbonyl, and (alkylamino)carbonyl substituents at the alpha-position in good to excellent overall yields.

  DOI：

  10.1021/jo00128a038

文献信息

• Cationic Chiral Pd-Catalyzed “Acetylenic” Diels-Alder Reaction: Computational Analysis of Reversal in Enantioselectivity
  作者：Kazuya Honda、Shun Ohkura、Yoshihiro Hayashi、Susumu Kawauchi、Koichi Mikami

  DOI：10.1002/asia.201801035

  日期：2018.10.4

  The highly enantioselective Diels–Alder reaction of acetylenic dienophiles is shown to be effectively catalyzed by cationic chiral palladium complexes. Not only the degree but also the sense of enantioselectivity critically depends on the steric demand of ligands. Computational analyses indicate that the steric demand does not affect the endo/exo‐selectivity but the enantioface selectivity of dienes

  乙二烯亲二烯体的高对映选择性Diels-Alder反应被阳离子手性钯配合物有效催化。不仅程度，而且对映选择性的感觉也严格取决于配体的空间需求。计算分析表明，空间需求量不会影响二烯的内/外选择性，但会影响二烯的对映体选择性。
• Asymmetric “Acetylenic” [3+2] Cycloaddition of Nitrones Catalyzed by Cationic Chiral Pd^II Lewis Acid
  作者：Kazuya Honda、Koichi Mikami

  DOI：10.1002/asia.201801016

  日期：2018.10.4

  Highly enantioselective [3+2] cycloaddition of ynones and nitrones has been developed. Very bulky ligand, DTBM‐SEGPHOS, was used for an effective asymmetric induction over distal reaction centers on the linear ynone dipolarophile and for prevention of PdII catalyst deactivation by coordination of the nitrones. The reaction has wide scope of substrates in both ynones and nitrones.

  已经开发出对映体和硝酮的高度对映选择性的[3 + 2]环加成反应。很大体积的配体DTBM-SEGPHOS用于在线性乙炔双极性亲和体的远端反应中心进行有效的不对称诱导，并通过硝酮的配位防止Pd II催化剂失活。该反应在炔酮和硝酮中具有广泛的底物范围。
• Synthesis of α-(4-Oxazolyl)amino Esters via Brønsted Acid Catalyzed Tandem Reaction
  作者：Ansoo Lee、Seohee Oh、Hyunwoo Kim

  DOI：10.1021/acs.orglett.8b01212

  日期：2018.6.1

  A one-step, Brønsted acid catalyzed tandem reaction for the synthesis of α-(4-oxazolyl)amino esters was developed. 4-Nitrobenzenesulfonic acid was found to be an efficient catalyst for the coupling of ethyl 2-oxobut-3-ynoates with amides to provide various α-(4-oxazolyl)amino esters. The experimental and X-ray crystallographic data suggest that a series of bond-forming reactions including imine formation

  开发了一步一步布朗斯台德酸催化串联反应合成α-（4-恶唑基）氨基酯的方法。发现4-硝基苯磺酸是使2-氧代丁-3-炔酸乙酯与酰胺偶联以提供各种α-（4-恶唑基）氨基酯的有效催化剂。实验和X射线晶体学数据表明，包括亚胺形成，分子间迈克尔加成和分子内迈克尔加成在内的一系列成键反应涉及生成恶唑和氨基酸官能团。
• Cationic Rhodium(I)/H₈-binap Complex Catalyzed [2+2+2] Cycloadditions of 1,6- and 1,7-Diynes with Carbonyl Compounds
  作者：Yousuke Otake、Rie Tanaka、Ken Tanaka

  DOI：10.1002/ejoc.200900185

  日期：2009.6

  catalyzes [2+2+2] cycloadditions of a variety of 1,6- and 1,7-diynes with both electron-deficient and electron-rich carbonyl compounds, leading to dienones in high yield under mild reaction conditions. In the reactions with acyl phosphonates, the reactivity of 1,6- and 1,7-diynes was highly dependent on their own structures. The addition of chelating diethyl oxalate effectively promoted the [2+2+2] cycloadditions

  我们已经确定阳离子铑 (I)/H8-binap 络合物可催化各种 1,6- 和 1,7-二炔与缺电子和富电子羰基化合物的 [2+2+2] 环加成，导致在温和的反应条件下高产率的二烯酮。在与酰基膦酸酯的反应中，1,6- 和 1,7- 二炔的反应性高度依赖于它们自身的结构。螯合草酸二乙酯的添加有效地促进了涉及酰基膦酸酯的 [2+2+2] 环加成，这可能是由于二炔和酰基膦酸酯之间通过简单的配体交换平衡形成了所需的二炔和酰基膦酸酯的 1:1 铑配合物。弱配位的草酸二乙酯。在涉及双功能羰基化合物或不对称 1,6-二炔的反应中，观察到高化学或区域选择性。
• Cationic Rhodium(I)/Bisphosphane Complex-Catalyzed Isomerization of Secondary Propargylic Alcohols to α,β-Enones
  作者：Ken Tanaka、Takeaki Shoji、Masao Hirano

  DOI：10.1002/ejoc.200700071

  日期：2007.6

  alcohols to α,β-enones. A kinetic resolution of secondary propargylic alcohols proceeded with moderate selectivity with [Rh((R)-BINAP)]OTf as a catalyst. Mechanistic studies revealed that the isomerization proceeds through intramolecular 1,3- and 1,2-hydrogen migration pathways. The isomerization of propargylic diol derivatives was also investigated, which revealed that 1,4-diketones, furans, and α,β-enones

  我们已经确定氢化阳离子 Rh(I)/双膦配合物是用于将仲炔醇异构化为 α,β-烯酮的高活性催化剂。仲炔醇的动力学拆分以 [Rh((R)-BINAP)]OTf 作为催化剂以中等选择性进行。机理研究表明，异构化通过分子内 1,3- 和 1,2- 氢迁移途径进行。还研究了炔二醇衍生物的异构化，结果表明 1,4-二酮、呋喃和 α,β-烯酮是从 2-butyn-1,4-diol、1-methoxy-2-butyn-4- ol 和 1-acetoxy-2-butyn-4-ol 衍生物，分别。此外，研究了炔二醇异构化的化学选择性，并观察到炔丙基羟基的优先氧化。