2-(4-氯苯基)戊-4-烯酸甲酯 | 67031-09-8

• 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: 2-(4-氯苯基)戊-4-烯酸甲酯
• 英文名称: methyl 2-(4-chlorophenyl)pent-4-enoate
• CAS: 67031-09-8
• 化学式: C₁₂H₁₃ClO₂
• 分子量: 224.687
• InChiKey: ZGKILKOCBCCCPD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  15
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(4-氯苯基)戊-4-烯酸甲酯 在 硫酸 、 碘 作用下， 以 二甲基亚砜 为溶剂， 反应 0.5h， 以71%的产率得到对氯苯乙酸甲酯
  参考文献：
  名称：

  First Iodine-Catalyzed Deallylation of Reactive Allyl Methylene Esters

  摘要：

  C-Allyl cleavage has been developed using the inexpensive and mild reagent iodine in dimethylsulfoxide. A variety of compounds with active methylene groups were C-deallylated using this reagent. This method is efficient and operationally simple in comparison to the methods using transition-metal complexes. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.

  DOI：

  10.1080/00397911.2012.682245
• 作为产物：
  描述：

  对氯苯乙酸 在 lithium diisopropyl amide 作用下， 生成 2-(4-氯苯基)戊-4-烯酸甲酯
  参考文献：
  名称：

  3-Phenyl-5-methyl-2H,5H-furan-2-ones: tuning antifungal activity by varying substituents on the phenyl ring

  摘要：

  A series of racemic 3-phenyl-5-methyl-2H,5H-furan-2-ones related to a natural product, (-)incrustoporine, was synthesized, and their antifungal activity evaluated. The key structural feature, furanone ring, was closed via H2SO4-mediated cyclization of 3-phenylpent-4-enoic acids. The compounds displayed antifungal activity, especially against filamentous fungi. Expressed as the minimum inhibition concentration (MIC) in mu mol/L, the activity of the most promising derivative against Absidia corymbifera matched that of ketoconazole (31.25 mu mol/L). In terms of mu g/mL, the substance was more active (7.6 mu g/mL) than this standard antifungal drug (16.6 mu g/mL). (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0960-894x(00)00376-0

文献信息

• Development of an O-Vinylation–Ring-Closing Metathesis Strategy to Access 3,3′-3,4-Dihydropyrans
  作者：Anne-Marie Dechert-Schmitt、Shawn Cabral、Daniel Kung

  DOI：10.1055/s-0036-1588615

  日期：——

  Dihydropyrans are common structural motifs that appear in both natural products and pharmaceuticals and are intermediates for the synthesis of tetrahydropyrans. Currently, no reports exist in the literature for the synthesis of 3,3′-differentially disubstituted-3,4-dihydro-2-pyrans. We describe an approach employing abundant esters as starting materials that allows access to these heterocyclic scaffolds

  二氢吡喃是常见的结构基序，出现在天然产物和药物中，是合成四氢吡喃的中间体。目前，文献中没有关于合成 3,3'-差异二取代-3,4-dihydro-2-pyrans 的报道。我们描述了一种使用丰富的酯作为起始材料的方法，该方法允许通过独特的 O-乙烯基化-RCM 序列访问这些杂环支架。
• Trialkylamine-Mediated Intramolecular Acylation of Akenes with Carboxylic Acid Chlorides
  作者：Jun-ichi Matsuo、Takaya Hoshikawa、Shun Sasaki、Hiroyuki Ishibashi

  DOI：10.1248/cpb.58.591

  日期：——

  Trialkylamine-mediated intramolecular cyclization of pent-4-enoyl chlorides was studied. Substitution with a tertiary alkyl group at the 2-position gave cyclopent-2-en-1-ones, while substitution with an aromatic group gave enol esters, which were formed by O-acylation of initially formed 3-chlorocyclopentanones with ketenes.

  研究了三烷基胺介导的戊-4-烯酰氯分子内环化。在 2 位用叔烷基取代可得到环戊-2-烯-1-酮，而用芳香基取代可得到烯醇酯，烯醇酯是由最初形成的 3-氯环戊酮与烯酮发生 O-酰化反应而形成的。
• Isomerization of Olefins Triggered by Rhodium-Catalyzed CH Bond Activation: Control of Endocyclic β-Hydrogen Elimination
  作者：Stephanie Y. Y. Yip、Christophe Aïssa

  DOI：10.1002/anie.201500596

  日期：2015.6.1

  Five‐membered metallacycles are typically reluctant to undergo endocyclic β‐hydrogen elimination. The rhodium‐catalyzed isomerization of 4‐pentenals into 3‐pentenals occurs through this elementary step and cleavage of two CH bonds, as supported by deuterium‐labeling studies. The reaction proceeds without decarbonylation, leads to trans olefins exclusively, and tolerates other olefins normally prone

  五元金属环通常不愿进行环内β-氢消除。在氘标记研究的支持下，铑的催化将4-戊烯醛异构化为3-戊烯醛，这是通过该基本步骤和两个CH键的裂解而实现的。反应在不进行脱羰基的情况下进行，仅产生反式烯烃，并耐受通常易于异构化的其他烯烃。还可以在外消旋混合物的对映发散反应中控制环内β-氢的消除。
• Evidence for a Non-Concerted, Dissoziative Mechanism of the Palladium-Catalyzed “Enolate Claisen Rearrangement” of Allylic Esters
  作者：Manfred Braun、Panos Meletis、Wolfgang Schrader

  DOI：10.1002/ejoc.201000874

  日期：——

  In an enolate Claisen rearrangement, deprotonated allyl phenylacetate undergoes a smooth conversion at –78 °C to 2-phenyl-4-pentenoic acid under palladium(0) catalysis. By using labelled starting materials in crossover experiments, the reaction is shown to follow a dissoziative, non-concerted, non-[3,3]-sigmatropic mechanism that involves palladium complexes and carboxylic-acid dianions as intermediates

  在烯醇克莱森重排中，去质子化的苯乙酸烯丙酯在 –78 °C 下在钯 (0) 催化下顺利转化为 2-苯基-4-戊烯酸。通过在交叉实验中使用标记的起始材料，显示反应遵循解离、非协调、非 [3,3]-σ 机制，涉及钯配合物和羧酸二价阴离子作为中间体。
• 3-Phenyl-5-methyl-2H,5H-furan-2-ones: tuning antifungal activity by varying substituents on the phenyl ring
  作者：Milan Pour、Marcel Špulák、Vojtěch Balšánek、Jiřı́ Kuneš、Vladimı́r Buchta、Karel Waisser

  DOI：10.1016/s0960-894x(00)00376-0

  日期：2000.8

  A series of racemic 3-phenyl-5-methyl-2H,5H-furan-2-ones related to a natural product, (-)incrustoporine, was synthesized, and their antifungal activity evaluated. The key structural feature, furanone ring, was closed via H2SO4-mediated cyclization of 3-phenylpent-4-enoic acids. The compounds displayed antifungal activity, especially against filamentous fungi. Expressed as the minimum inhibition concentration (MIC) in mu mol/L, the activity of the most promising derivative against Absidia corymbifera matched that of ketoconazole (31.25 mu mol/L). In terms of mu g/mL, the substance was more active (7.6 mu g/mL) than this standard antifungal drug (16.6 mu g/mL). (C) 2000 Elsevier Science Ltd. All rights reserved.