4-苄基噻吩-2-羧酸 | 27921-49-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 中文名称: 4-苄基噻吩-2-羧酸
• 英文名称: 4-Benzylthiophen-2-carbonsaeure
• 英文别名: 4-benzyl-thiophene-2-carboxylic acid；4-Benzylthiophene-2-carboxylic acid
• CAS: 27921-49-9
• 化学式: C₁₂H₁₀O₂S
• 分子量: 218.276
• InChiKey: CVTUZGDJYOVVOT-UHFFFAOYSA-N

物化性质

• 沸点：
  389.8±30.0 °C(Predicted)
• 密度：
  1.277±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  65.5
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 海关编码：
  2934999090

反应信息

• 作为反应物：
  描述：

  4-苄基噻吩-2-羧酸 在 铜 作用下， 以 喹啉 为溶剂， 反应 1.0h， 以85%的产率得到3-苄基噻吩
  参考文献：
  名称：

  3-Alkyl or Aryl Thiophenes from Malonaldehyde Derivatives

  摘要：

  A synthesis of 3-alkyl or aryl thiophenes is described starting from malonaldehydes.

  DOI：

  10.1080/00397919408010175
• 作为产物：
  描述：

  2-benzyl-1,3-propanedione 在 盐酸 、 sodium hydroxide 、 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 0.75h， 生成 4-苄基噻吩-2-羧酸
  参考文献：
  名称：

  3-Alkyl or Aryl Thiophenes from Malonaldehyde Derivatives

  摘要：

  A synthesis of 3-alkyl or aryl thiophenes is described starting from malonaldehydes.

  DOI：

  10.1080/00397919408010175

文献信息

• Golf ball
  申请人：Dunlop Sports Co. Ltd.

  公开号：US10188910B2

  公开（公告）日：2019-01-29

  An object of the present invention is to provide a golf ball having an excellent flight performance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover covering the spherical core, wherein a hardness difference D1 (H75−H0) between a hardness H75 at a point located at a distance of 75% of a core radius from a center of the spherical core and a center hardness H0 of the spherical core is 15 or more and 35 or less in Shore C hardness, a hardness difference D2 (Hs−H75) between a surface hardness Hs of the spherical core and the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core is −1 or more and 3.5 or less in Shore C hardness, and a hardness difference D3 ((H0+H75)/2−H37.5) between a hardness of (the center hardness H0 of the spherical core+the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core)/2 and a hardness H37.5 at a point located at a distance of 37.5% of the core radius from the center of the spherical core is 0.5 or more and 6.5 or less in Shore C hardness.

  本发明的目的是提供一种在发球木杆击球时具有优异飞行性能的高尔夫球。本发明提供了一种高尔夫球，它包括一个球形芯和至少一个覆盖在球形芯上的盖，其中位于球形芯中心距离球形芯半径 75% 处的硬度 H75 与球形芯中心硬度 H0 之间的硬度差 D1（H75-H0）为 15 或以上，邵氏 C 硬度为 35 或以下、球形芯表面硬度 Hs 与位于距球形芯中心 75% 的芯半径处的硬度 H75 之间的硬度差 D2（Hs-H75）为-1 或以上且 3.硬度差 D3（(H0+H75)/2-H37.5）为 0.5 或 0.5 以上且 6.5 或 6.5 以下（邵氏 C 硬度）。
• GOLF BALL
  申请人：Dunlop Sports Co. Ltd.

  公开号：US20160144241A1

  公开（公告）日：2016-05-26

  An object of the present invention is to provide a golf ball showing a low spin rate on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a carboxylic acid having a heterocyclic ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.
• US9283439B2
  申请人：——

  公开号：US9283439B2

  公开（公告）日：2016-03-15
• US9533195B2
  申请人：——

  公开号：US9533195B2

  公开（公告）日：2017-01-03
• 3-Alkyl or Aryl Thiophenes from Malonaldehyde Derivatives
  作者：G. Kirsch、D. Prim

  DOI：10.1080/00397919408010175

  日期：1994.6

  A synthesis of 3-alkyl or aryl thiophenes is described starting from malonaldehydes.