4'-ethynyl-2-methylbiphenyl

• 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: 4'-ethynyl-2-methylbiphenyl
• 英文别名: 4-(o-tolyl)-1-ethynylbenzene；(4-(o-tolyl)phenyl)acetylene；4'-Ethynyl-2-methyl-1,1'-biphenyl；1-ethynyl-4-(2-methylphenyl)benzene
• 化学式: C₁₅H₁₂
• 分子量: 192.26
• InChiKey: VEWQNKABGVYDAZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  4'-ethynyl-2-methylbiphenyl 在 吡啶 、 盐酸羟胺 、 palladium diacetate 、 一氯化碘 、 三(2,6-二甲氧基苯基)磷 、 三苯基膦 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 反应 22.16h， 生成 1-hydroxy-4-methyl-6-(2'-methylbiphenyl-4-yl)pyridin-2(1H)-one
  参考文献：
  名称：

  Discovery of a novel series of N -hydroxypyridone derivatives protecting astrocytes against hydrogen peroxide-induced toxicity via improved mitochondrial functionality

  摘要：

  Astrocytes play a key role in brain homeostasis, protecting neurons against neurotoxic stimuli such as oxidative stress. Therefore, the neuroprotective therapeutics that enhance astrocytic functionality has been regarded as a promising strategy to reduce brain damage. We previously reported that ciclopirox, a well-known antifungal N-hydroxypyridone compound, protects astrocytes from oxidative stress by enhancing mitochondrial function. Using the N-hydroxypyridone scaffold, we have synthesized a series of cytoprotective derivatives. Mitochondrial activity assay showed that N-hydroxypyridone derivatives with biphenyl group have comparable to better protective effects than ciclopirox in astrocytes exposed to H2O2. N-hydroxypyridone derivatives, especially 11g, inhibited membrane-induced deterioration of mitochondrial membrane potential and oxygen consumption rate, and significantly improved cell viability of astrocytes. The results indicate that the N-hydroxypyridone motif can provide a novel cytoprotective scaffold for astrocytes via enhancing mitochondrial functionality. (C) 2017 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2016.12.052
• 作为产物：
  描述：

  (4-溴苯基乙炔基)三甲基硅烷 在 bis-triphenylphosphine-palladium(II) chloride 、 sodium carbonate 、 potassium carbonate 作用下， 以 四氢呋喃 、 甲醇 、 乙二醇二甲醚 、 水 为溶剂， 生成 4'-ethynyl-2-methylbiphenyl
  参考文献：
  名称：

  Discovery of a novel series of N -hydroxypyridone derivatives protecting astrocytes against hydrogen peroxide-induced toxicity via improved mitochondrial functionality

  摘要：

  Astrocytes play a key role in brain homeostasis, protecting neurons against neurotoxic stimuli such as oxidative stress. Therefore, the neuroprotective therapeutics that enhance astrocytic functionality has been regarded as a promising strategy to reduce brain damage. We previously reported that ciclopirox, a well-known antifungal N-hydroxypyridone compound, protects astrocytes from oxidative stress by enhancing mitochondrial function. Using the N-hydroxypyridone scaffold, we have synthesized a series of cytoprotective derivatives. Mitochondrial activity assay showed that N-hydroxypyridone derivatives with biphenyl group have comparable to better protective effects than ciclopirox in astrocytes exposed to H2O2. N-hydroxypyridone derivatives, especially 11g, inhibited membrane-induced deterioration of mitochondrial membrane potential and oxygen consumption rate, and significantly improved cell viability of astrocytes. The results indicate that the N-hydroxypyridone motif can provide a novel cytoprotective scaffold for astrocytes via enhancing mitochondrial functionality. (C) 2017 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2016.12.052

文献信息

• Hydroarylation of terminal alkynes with arylboronic acids catalyzed by low loadings of palladium
  作者：Lei Xu、Shiyu Li、Qi Zhang、Ning Deng、Biao Zhang、Huajian Xu

  DOI：10.1016/j.cclet.2022.05.048

  日期：2023.2

  The hydroarylation reaction of terminal alkynes with arylboronic acids catalyzed by low (400 ppm) loadings of palladium has been developed. The reaction is broad in scope and high-yielding, even on multi-gram scale. It is suitable for the synthesis of alkenes labeled with deuterium, and for the late-stage modification of bioactive molecules.

  已经开发了由低负载量 (400 ppm) 钯催化的末端炔烃与芳基硼酸的加氢芳基化反应。该反应范围广，产量高，甚至在多克规模上也是如此。适用于氘标记烯烃的合成，以及生物活性分子的后期修饰。