乙基3-(3-甲基苯基)-2-丙炔酸酯 | 58686-70-7

• 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: 乙基3-(3-甲基苯基)-2-丙炔酸酯
• 英文名称: ethyl 3-tolylpropiolate
• 英文别名: ethyl 3-(m-tolyl)propiolate；m-tolyl-propynoic acid ethyl ester；ethyl 3-(3-methylphenyl)prop-2-ynoate
• CAS: 58686-70-7
• 化学式: C₁₂H₁₂O₂
• 分子量: 188.226
• InChiKey: DCDJJDUJXYBDAD-UHFFFAOYSA-N

物化性质

• 沸点：
  291.3±19.0 °C(Predicted)
• 密度：
  1.07±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  14
• 可旋转键数：
  3
• 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：

  乙基3-(3-甲基苯基)-2-丙炔酸酯 在 lithium hydroxide monohydrate 作用下， 以 四氢呋喃 、 甲醇 、 水 为溶剂， 反应 3.0h， 以113 mg的产率得到3-(3-methylphenyl)prop-2-ynoic acid
  参考文献：
  名称：

  Structural design and synthesis of arylalkynyl amide-type peroxisome proliferator-activated receptor γ (PPARγ)-selective antagonists based on the helix12-folding inhibition hypothesis

  摘要：

  Peroxisome proliferator-activated receptor gamma (PPAR gamma) antagonists are candidates for treatment of type 2 diabetes, obesity and osteoporosis. However, few rational design strategies are currently available. Here, we utilized the helix12 (H12)-folding inhibition hypothesis, in combination with our previously determined X-ray crystal structure of PPAR gamma agonist MEKT-21 (6) complexed with the PPAR gamma ligand-binding domain, to design and develop a potent phenylalkynyl amide-type PPAR gamma antagonist 9i, focusing initially on pinpoint structural modification of the propanoic acid moiety of 6. Since 9i retained very weak, but distinct, PPAR gamma agonist activity, we next modified the distal benzene ring of 9i, aiming to delete the residual PPAR gamma agonist activity while retaining the antagonist activity. Introduction of a chlorine atom at the 2-position of the distal benzene ring afforded 9p, which exhibited potent, PPAR gamma-selective full antagonist activity without detectable agonist activity. We found that 9p stabilized the corepressor PPAR gamma complex and suppressed basal PPAR gamma activity. This compound showed anti-adipogenesis activity at the cellular level. This agonist antagonist switching concept based on the H12-folding inhibition hypothesis should also be applicable for designing other classes of PPAR gamma full antagonists. (C) 2014 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2014.11.017
• 作为产物：
  描述：

  3-甲基苯甲醛 在 正丁基锂 、 三苯基膦 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 1.67h， 生成 乙基3-(3-甲基苯基)-2-丙炔酸酯
  参考文献：
  名称：

  β-取代的-β-硫代-α，β-不饱和酯的Rh催化的不对称氢化：迅速获得手性有机硫化物

  摘要：

  成功开发了Rh /双官能双膦-硫脲配体（ZhaoPhos）催化的β-取代-β-硫代-α，β-不饱和酯的（Z）-和（E）异构体的不对称加氢反应。这种新的不对称催化方法可以高效地获得手性有机硫化物的两种对映异构体，即β-取代-β-硫代丙酸乙酯，具有优异的效果（（Z）底物的收率可达99％，ee大于99％，99％（E）底物的5 ％收率和ee的98％，TON高达5000），它们是有机合成中的重要中间体。

  DOI：

  10.1021/acs.orglett.8b02339

文献信息

• Palladium-catalyzed cascade carboesterification of norbornene with alkynes
  作者：Wanqing Wu、Can Li、Jianxiao Li、Huanfeng Jiang

  DOI：10.1039/c8ob01799a

  日期：——

  An efficient and convenient palladium-catalyzed cascade carboesterification of norbornenes (NBE) with alkynes has been accomplished to afford functionalized α-methylene γ-lactone and tetrahydrofuran derivatives in good to excellent yields. This new strategy exhibits excellent atom- and step-economy, good functional group tolerance and broad substrate scope. In particular, NBE-palladium species was

  已经完成了高效且方便的降冰片烯（NBE）与炔烃的钯催化的级联碳酯化反应，从而以良好或优异的收率提供了官能化的α-亚甲基γ-内酯和四氢呋喃衍生物。这种新策略具有出色的原子和步阶经济性，良好的官能团耐受性和广泛的底物范围。特别地，提出了NBE-钯物质是催化循环中抑制β-H消除过程的关键中间体。值得注意的是，开发的协议为构建各种含氧杂环骨架提供了直接而实用的工具，说明了在合成化学和药物化学中的有希望的应用。
• Recyclable heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes: Practical access to vicinal tricarbonyls
  作者：Wenli Hu、Bin Huang、Bingbo Niu、Mingzhong Cai

  DOI：10.1016/j.tetlet.2021.152953

  日期：2021.3

  A highly efficient heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes has been developed using 2,6-dichloropyridine N-oxide as the oxidant in dichloromethane (CH2Cl2) at room temperature, providing a novel and practical approach for the construction of diverse vicinal tricarbonyls such as α,β-diketoesters, 1,2,3-triketones, and α,β-diketoamides in good to excellent yields. The heterogeneous

  在室温下，使用2,6-二氯吡啶N-氧化物作为二氯甲烷（CH 2 Cl 2）的氧化剂，开发了一种高效的异质金（I）催化内部酰基炔烃氧化的方法，为构建该结构提供了一种新颖而实用的方法种类繁多的邻位三羰基化合物，如α，β-二酮酸酯，1,2,3-三酮和α，β-二酮酰胺，收率良好。可以通过简单的制备方法容易地从市售试剂中获得非均相金（I）催化剂，并通过过滤反应混合物进行回收并重复使用多达七次，而不会显着降低催化效率。
• Borane-catalyzed cascade Friedel–Crafts alkylation/[1,5]-hydride transfer/Mannich cyclization to afford tetrahydroquinolines
  作者：Bei-Bei Zhang、Shuo Peng、Feiyi Wang、Cuifen Lu、Junqi Nie、Zuxing Chen、Guichun Yang、Chao Ma

  DOI：10.1039/d1sc05629h

  日期：——

  An unprecedented redox-neutral annulation reaction of tertiary anilines with electron-deficient alkynes was developed that proceeds through a cascade Friedel–Crafts alkylation/[1,5]-hydride transfer/Mannich cyclization sequence. Under B(C6F5)3 catalysis, a range of functionalized 1,2,3,4-tetrahydroquinolines were facilely constructed in moderate to good yields with exclusive 3,4-anti-stereochemistry

  开发了叔苯胺与缺电子炔烃的前所未有的氧化还原中性环化反应，该反应通过级联的 Friedel-Crafts 烷基化/[1,5]-氢化物转移/曼尼希环化序列进行。在 B(C 6 F 5 ) 3催化下，一系列功能化的 1,2,3,4-四氢喹啉以中等至良好的产率轻松构建，具有独有的 3,4-反立体化学。催化剂的商业可用性和过程的高原子和步骤经济性，以及无金属和无外部氧化剂的条件，使其成为有机合成中有吸引力的方法。
• Novel palladium-catalyzed cascade carboxylative annulation to construct functionalized γ-lactones in ionic liquids
  作者：Jianxiao Li、Shaorong Yang、Wanqing Wu、Huanfeng Jiang

  DOI：10.1039/c3cc48052f

  日期：——

  A novel palladium-catalyzed, one-pot, four-step cascade method has been developed to afford functionalized gamma-lactones in moderate to good yields. This novel and general methodology represents a rare instance of carbonylation of the C(sp(3))-palladium bond.

  已经开发出新颖的钯催化的一锅四步级联方法，以中等至良好的产率提供官能化的γ-内酯。这种新颖而通用的方法代表了C（sp（3））-钯键羰基化的罕见实例。
• Transition-metal-free C–C bond cleavage and formation: efficient synthesis of 2,3-diarylimidazo[1,2-α]pyridines from 2-aminopyridines and alkynoates
  作者：Zhengwang Chen、Yuelu Wen、Guotian Luo、Min Ye、Qinghao Wang

  DOI：10.1039/c6ra19291b

  日期：——

  A highly efficient transition-metal-free cyclization reaction for the synthesis of 2,3-diarylimidazo[1,2-α]pyridines is described. A variety of substituted 2-aminopyridines and alkynoates are compatible under the standard conditions. This protocol is marked by the cleavage of a C–C bond and the formation of a new Csp2–Csp2 bond under transition-metal-free conditions.

  描述了一种高效的无过渡金属环化反应，用于合成2,3-二芳基咪唑并[1,2-α]吡啶。在标准条件下，各种取代的2-氨基吡啶和炔酸酯是相容的。该方案的特征是在无过渡金属的条件下，CC键断裂并形成新的C sp 2 -C sp 2键。