2-ethyl 5-methyl benzo[b]thiophene-2,5-dicarboxylate | 1207537-66-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻吩类
• 英文名称: 2-ethyl 5-methyl benzo[b]thiophene-2,5-dicarboxylate
• 英文别名: 2-O-ethyl 5-O-methyl 1-benzothiophene-2,5-dicarboxylate
• CAS: 1207537-66-3
• 化学式: C₁₃H₁₂O₄S
• 分子量: 264.302
• InChiKey: QKAXVUHMSRWDEO-UHFFFAOYSA-N

物化性质

• 熔点：
  78-79 °C
• 沸点：
  388.1±22.0 °C(Predicted)
• 密度：
  1.287±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  80.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  3-甲醛苯甲酸甲酯 在 N-氯代丁二酰亚胺 、 2-羟基-5-硝基-3-三氟甲基吡啶 、 对三氟甲基苯胺 、 palladium diacetate 、 potassium carbonate 、 三氟乙酸 作用下， 以 1,2-二氯乙烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 26.0h， 生成 2-ethyl 5-methyl benzo[b]thiophene-2,5-dicarboxylate
  参考文献：
  名称：

  单齿瞬态定向基团可实现Pd催化邻位C–H甲氧基化和苯甲醛的氯化反应

  摘要：

  我们通过采用单齿瞬态导向基团（TDGs）作为二齿TDG的替代策略，报告了Pd催化的邻位C-H甲氧基化和苯甲醛的氯化。更重要的是，成功地获得了苯甲醛亚胺邻环钯中间体的单晶，并且通过X射线衍射明确地确定了其结构，这清楚地表明它是由吡啶酮配体桥接的双核钯物种。通过合成天然产物和药物的关键中间体，进一步证明了该方法的实用性。

  DOI：

  10.1021/acs.orglett.9b01158

文献信息

• Substituted Benzothiophene or Benzofuran Derivatives as a Novel Class of Bone Morphogenetic Protein-2 Up-Regulators: Synthesis, Structure−Activity Relationships, and Preventive Bone Loss Efficacies in Senescence Accelerated Mice (SAMP6) and Ovariectomized Rats
  作者：Hui-fang Guo、Hua-yi Shao、Zhao-yong Yang、Si-tu Xue、Xue Li、Zong-ying Liu、Xiao-bo He、Jian-dong Jiang、Yue-qin Zhang、Shu-yi Si、Zhuo-rong Li

  DOI：10.1021/jm901685n

  日期：2010.2.25

  In this work, substituted benzothiophene and benzofuran compounds were found to be a new class of potential anabolic agents by enhancing BMP-2 expression. A series of benzothiophene and benzofuran derivatives have been synthesized, and their activities of up-regulating BMP-2 and bone loss prevention efficacies in SAMP6 mice and OVX rats have been studied. Benzothiophenes 1, 3, 14, 4a, 7a, 8a, and benzofuran analogue 2 showed higher BMP-2 up-regulation rates in vitro. Compound 8111 was found to significantly affect the bone formation rate of tested SAMP6 mice. Compound I showed an improved bone quality in SAMP6 mice and also showed activity in OVX rats. We have demonstrated that Substituted benzothiophene and benzofuran derivatives, especially compounds I and 8a, enhance BMP-2 expression in vitro and in vivo and stimulate bone formation and trabecular connectivity restoration ill vivo. The compounds represent potential leads in the development of a new class of anabolic agents.
• [EN] BENZO 5-MEMBERED UNSATURATED HETEROCYCLIC COMPOUNDS AND PREPARATION METHODS THEREOF<br/>[FR] COMPOSÉS DE BENZO HÉTÉROCYCLIQUES INSATURÉS À 5 ÉLÉMENTS ET PROCÉDÉS POUR LES PRÉPARER
  申请人：INST MED BIOTECHNOLOGY CAMS

  公开号：WO2012068702A1

  公开（公告）日：2012-05-31

  Disclosed are benzo 5-membered unsaturated heterocyclic compounds represented by formula I and their pharmaceutically acceptable salts, preparation methods and uses thereof in the preparation of the drugs for treating osteoporosis, wherein each substituent of formula (I) is defined as the description.
• Monodentate Transient Directing Group Enabled Pd-Catalyzed <i>Ortho</i>-C–H Methoxylation and Chlorination of Benzaldehydes
  作者：Feng Li、Yirong Zhou、Heng Yang、Ziqi Wang、Qinqin Yu、Fang-Lin Zhang

  DOI：10.1021/acs.orglett.9b01158

  日期：2019.5.17

  We report Pd-catalyzed ortho-C–H methoxylation and chlorination of benzaldehydes by employing monodentate transient directing groups (TDGs) as an alternative strategy to bidentate TDGs. More importantly, a single crystal of benzaldehyde imine ortho-cyclopalladium intermediate was successfully obtained, and its structure was unambiguously determined by X-ray diffraction, which clearly showed that it

  我们通过采用单齿瞬态导向基团（TDGs）作为二齿TDG的替代策略，报告了Pd催化的邻位C-H甲氧基化和苯甲醛的氯化。更重要的是，成功地获得了苯甲醛亚胺邻环钯中间体的单晶，并且通过X射线衍射明确地确定了其结构，这清楚地表明它是由吡啶酮配体桥接的双核钯物种。通过合成天然产物和药物的关键中间体，进一步证明了该方法的实用性。