potassium 4-(4-methoxyphenyl)-2-oxo-but-3-enoate

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: potassium 4-(4-methoxyphenyl)-2-oxo-but-3-enoate
• 英文别名: potassium;(E)-4-(4-methoxyphenyl)-2-oxobut-3-enoate
• 化学式: C₁₁H₉O₄*K
• 分子量: 244.288
• InChiKey: LZJDSZFDJYZVOA-KQGICBIGSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  -2.97
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  66.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  potassium 4-(4-methoxyphenyl)-2-oxo-but-3-enoate 在 盐酸 、 草酰氯 、 N,N-二甲基甲酰胺 作用下， 以 水 、 二氯甲烷 为溶剂， 反应 8.0h， 生成 (E)-4-(4-methoxyphenyl)-2-oxobut-3-enoyl chloride
  参考文献：
  名称：

  双金属催化不对称级联反应合成手性双螺四氢呋喃吲哚

  摘要：

  通过协同双核锌-AzePhenol催化剂描述了一种对映选择性构建双螺四氢呋喃羟吲哚的新的有效途径。在温和的条件下，通过β，γ-不饱和α-酮酰胺和2-羟基-1-茚满酮的级联迈克尔/半缩酮化/弗里德-克拉夫茨反应，合成了多种具有优良立体选择性的双螺四氢呋喃恶吲哚。该反应可以以克级进行，催化剂负载量低（2mol％），而不会影响其效率。

  DOI：

  10.1021/acs.orglett.9b00386
• 作为产物：
  描述：

  sodium pyruvate 、 4-甲氧基苯甲醛 在 potassium hydroxide 作用下， 以 甲醇 为溶剂， 以98%的产率得到potassium 4-(4-methoxyphenyl)-2-oxo-but-3-enoate
  参考文献：
  名称：

  Structure–Activity Relationship Studies of α-Ketoamides as Inhibitors of the Phospholipase A and Acyltransferase Enzyme Family

  摘要：

  The phospholipase A and acyltransferase (PLAAT) family of cysteine hydrolases consists of five members, which are involved in the Ca2+-independent production of N-acylphosphatidylethanolamines (NAPEs). NAPEs are lipid precursors for bioactive N-acylethanolamines (NAEs) that are involved in various physiological processes such as food intake, pain, inflammation, stress, and anxiety. Recently, we identified alpha-ketoamides as the first pan-active PLAAT inhibitor scaffold that reduced arachidonic acid levels in PLAAT3-overexpressing U2OS cells and in HepG2 cells. Here, we report the structure-activity relationships of the alpha-ketoamide series using activity-based protein profiling. This led to the identification of LEI-301, a nanomolar potent inhibitor for the PLAAT family members. LEI-301 reduced the NAE levels, including anandamide, in cells overexpressing PLAAT2 or PLAAT5. Collectively, LEI-301 may help to dissect the physiological role of the PLAATs.

  DOI：

  10.1021/acs.jmedchem.0c00522

文献信息

• Bimetallic Catalytic Asymmetric Tandem Reaction of β‐Alkynyl Ketones to Synthesize 6,6‐Spiroketals
  作者：Shulin Ge、Weidi Cao、Tengfei Kang、Bowen Hu、Hang Zhang、Zhishan Su、Xiaohua Liu、Xiaoming Feng

  DOI：10.1002/anie.201812842

  日期：2019.3.18

  The enantioselective tandem reaction of β,γ‐unsaturated α‐ketoesters with β‐alkynyl ketones was realized by a bimetallic catalytic system of achiral AuΙΙΙ salt and chiral N,N′‐dioxide‐MgΙΙ complex. The cycloisomerization of β‐alkynyl ketone and asymmetric intermolecular [4+2] cycloaddition with β,γ‐unsaturated α‐ketoesters subsequently occurred, providing an efficient and straightforward access to

  β的对映选择性串联反应，具有β -炔基酮γ不饱和α酮酯是由非手性Au的双金属催化剂体系实现ΙΙΙ盐和手性Ñ，Ñ '二氧化物-镁ΙΙ复杂。随后发生了β-炔基酮的环异构化和不对称分子间[4 + 2]与β，γ-不饱和α-酮酸酯的加成反应，可高效，直接地获得手性多功能6,6-螺缩酮，产率高达97％，94 ％ee和> 19/1 dr此外，基于控制实验的结果，提出了一个催化循环。
• Asymmetric Construction of α-Substituted β-Hydroxy Lactones via Ni Catalyzed Decarboxylative Addition Reaction
  作者：Lingchen He、Ebrahim-Alkhalil M. A. Ahmed、Hongxin Liu、Xingen Hu、Hong-ping Xiao、Juan Li、Jun Jiang

  DOI：10.1021/acs.joc.0c02854

  日期：2021.3.19

  We described a Ni-bidentate oxazoline catalyzed highly enantio- and diastereoselective decarboxylative aldol reaction of 2-oxotetrahydrofuran-3-carboxylic acid/2-oxochromane-3-carboxylic acid derivatives with different kinds of carbonyls. Under optimal reaction conditions, α-substituted β-hydroxy butyrolactones and dihydrocoumarins with an all-carbon quaternary stereocenter have been generated with

  我们描述了Ni-双齿恶唑啉催化的2-氧代四氢呋喃-3-羧酸/ 2-氧代苯并-3-羧酸衍生物与不同种类的羰基的高度对映体和非对映体选择性脱羧羟醛反应。在最佳反应条件下，已生成具有全官能团四价立体中心的α-取代的β-羟基丁内酯和二氢香豆素。此外，还描述了产物的充分转化，其中通过氢化和开环反应分别顺利地构建了脂肪族叔醇和多取代的1,4-二醇。
• Facile synthesis of substituted diaryl sulfones <i>via</i> a [3 + 3] benzannulation strategy
  作者：Xiang-zheng Tang、Lang Tong、Hua-ju Liang、Jie Liang、Yong Zou、Xue-jing Zhang、Ming Yan、Albert S. C. Chan

  DOI：10.1039/c8ob00662h

  日期：——

  base-mediated [3 + 3] benzannulation strategy for the conversion of 1,3-bis(sulfonyl)propenes and β,γ-unsaturated α-ketoesters to diaryl sulfones has been developed. This method provides facile, metal-free and efficient access to highly substituted diaryl sulfones in good to excellent yields. In addition, the sulfonyl group could be easily removed or converted to other functional groups via an organostannane

  已开发出一种由碱介导的[3 + 3]苯环芳构化策略，可将1,3-双（磺酰基）丙烯和β，γ-不饱和α-酮酸酯转化为二芳基砜。该方法可以轻松，无金属且高效地获得高取代的二芳基砜，且收率良好。另外，磺酰基可通过有机锡烷中间体容易地除去或转化为其他官能团。
• Features of two- and multicomponent heterocyclization reactions involving 3,4-disubstituted 5-aminopyrazoles and alkyl pyruvates
  作者：Yana I. Sakhno、Anton V. Kozyryev、Sergey M. Desenko、Svetlana V. Shishkina、Vladimir I. Musatov、Dmytro O. Sysoiev、Valentin A. Chebanov

  DOI：10.1016/j.tet.2017.12.031

  日期：2018.2

  Three-component heterocyclizations of pyruvic acids and their esters with 5-aminopyrazoles and aromatic aldehydes, in addition to the sequential versions of these reactions, under different activating conditions were studied. Under conventional heating, pyrazolopyrimidine derivatives containing a hydroxyl group in the 6-position were formed in both two- and three-component treatments. Whereas the application

  除了这些反应的顺序形式以外，还研究了丙酮酸及其酯与5-氨基吡唑和芳族醛的三组分杂环在不同的活化条件下。在常规加热下，在两组分和三组分处理中均形成了在6-位含有羟基的吡唑并嘧啶衍生物。惰性气氛的使用不会影响这些反应的结果，而超声辐射的使用导致在多组分反应中形成7-羟基-四氢吡唑并嘧啶，在逐步操作的情况下导致6-羟基-二氢吡唑并嘧啶步骤方法。通过常规加热将后一种处理的产物进一步转化成杂芳化的6-羟基-吡唑并嘧啶。
• Potassium 2-oxo-3-enoates as Effective and Versatile Surrogates for α, β-Unsaturated Aldehydes in NHC-Catalyzed Asymmetric Reactions
  作者：Yaru Gao、Yafei Ma、Chen Xu、Lin Li、Tianjian Yang、Guoqing Sima、Zhenqian Fu、Wei Huang

  DOI：10.1002/adsc.201701413

  日期：2018.2.1

  to be effective and versatile surrogates for α,β‐unsaturated aldehydes in NHC‐catalyzed asymmetric reactions. Promoted by chiral N‐heterocyclic carbenes combined with LiCl, these easy‐to‐handle solid salts could release of CO2 and then undergo asymmetric reactions via homoenolate and α, β‐unsaturated acyl azolium intermediate. The reactions have broad substrate scopes with high enantioselectivities.

  2-羟基-3-烯酸钾很容易大规模制备并易于储存，已被发现是NHC催化的不对称反应中α，β-不饱和醛的有效且多用途的替代物。这些易处理的固体盐在手性N-杂环卡宾与LiCl的共同作用下可以释放出CO 2，然后通过同烯酸酯和α，β-不饱和酰基偶氮中间体发生不对称反应。反应具有高对映选择性的广泛的底物范围。