1,3-dichloro-2-propyl 2-thiophencarboxylate | 1160850-08-7

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: 1,3-dichloro-2-propyl 2-thiophencarboxylate
• CAS: 1160850-08-7
• 化学式: C₈H₈Cl₂O₂S
• 分子量: 239.122
• InChiKey: KSIUOVRGPMEIDR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.75
• 重原子数：
  13.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  2-噻吩甲酸 、 甘油 在 三甲基氯硅烷 作用下， 反应 48.0h， 以88%的产率得到1,3-dichloro-2-propyl 2-thiophencarboxylate
  参考文献：
  名称：

  From glycerol to chlorohydrin esters using a solvent-free system. Microwave irradiation versus conventional heating

  摘要：

  Esterification-chlorination of glycerol provides chlorohydrin esters in high yields. A ratio of reagents close to equivalence can be used, so that atom economy of the reaction is optimized. The reaction can be carried out using either classical or microwave heating, and no solvent is required. 2-Chloro-1-(chloromethyl)ethyl esters can be obtained in high regioisomeric relationship when either low or moderate temperature is used. In contrast, microwave irradiation allows the use of higher reaction temperatures that render mixtures of both regioisomers in variable relationships. Kinetic control of the process is proposed for classical heating, and experimental results are analyzed with the aid of ab initio calculated values. Non-thermal phenomena can be used to explain the high efficiency of microwave irradiation at low temperature. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.10.048

文献信息

• Combining AlCl3·6H2O and an ionic liquid to prepare chlorohydrin esters from glycerol
  作者：Gemma Villorbina、Albert Tomàs、Marc Escribà、Mireia Oromí-Farrús、Jordi Eras、Mercè Balcells、Ramon Canela

  DOI：10.1016/j.tetlet.2009.03.183

  日期：2009.6

  We describe here the first example in which glycerol has been transformed into chlorohydrin esters using an ionic liquid and hydrated aluminium chloride. The method avoids using Crown-18 ether, which was needed to obtain a similar yield when KCl was used. Alkyl and aryl acids can be used, although yields are very dependent on the carboxylic acid used.

  我们在这里描述第一个例子，其中使用离子液体和水合氯化铝将甘油转化为氯醇酯。该方法避免了使用Crown-18醚，而使用KCl时需要使用Crown-18醚才能获得相似的收率。可以使用烷基和芳基酸，尽管产率非常取决于所用的羧酸。