ethyl dibenzothiophene-1-carboxylate | 34724-71-5

• 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: ethyl dibenzothiophene-1-carboxylate
• 英文别名: dibenzothiophene-1-carboxylic acid ethyl ester；Ethyl-dibenzothiophen-1-carboxylat；Ethyl dibenzo[b,d]thiophene-1-carboxylate
• CAS: 34724-71-5
• 化学式: C₁₅H₁₂O₂S
• 分子量: 256.325
• InChiKey: DCLSBTLRGXLPDR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  54.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  ethyl dibenzothiophene-1-carboxylate 在 sodium tetrahydroborate 、 nickel dichloride 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 1.0h， 以78%的产率得到2-苯基苯甲酸乙酯
  参考文献：
  名称：

  Desulfurization of benzo- and dibenzothiophenes with nickel boride

  摘要：

  Nickel boride, prepared from the reduction of nickel chloride hexahydrate with sodium borohydride in methanol-tetrahydrofuran, reduces benzothiophenes to alkylbenzenes and dibenzothiophenes to biphenyls. The reaction is rapid at or below room temperature and does not require protection from the atmosphere. Best results are obtained when the nickel boride is generated in situ in the presence of the sulfur compound. Hydroxyl, carboxyl, ester, and amino groups are unaffected while chloro, bromo, and nitro substituents are also reduced under these conditions. A short-lived intermediate, possibly a nickel hydride species, appears to be required in the desulfurization. Complexation of the substrate to the nickel boride surface, followed by stepwise reduction of the two C-S bonds, occurs. The faster disappearance of dibenzothiophene containing the lighter S-32 isotope compared to that with S-34 (k(S-32)/k(S-34) = 1.005 to 1.006) suggests that C-S bond cleavage is the rate-determining step.

  DOI：

  10.1021/jo00033a017
• 作为产物：
  描述：

  2-allylbenzo[b]thiophene 、 ethyl dichloroethoxyacetate 生成 ethyl dibenzothiophene-1-carboxylate
  参考文献：
  名称：

  TEDJAMULIA, M. L.;TOMINAGA, YOSHINORI;CASTLE, R. N.;LEE, M. L., J. HETEROCYCL. CHEM., 1983, 20, N 5, 1149-1152

  摘要：

  DOI：

文献信息

• Tedjamulia, Marvin L.; Tominaga, Yoshinori; Castle, Raymond N., Journal of Heterocyclic Chemistry, 1983, vol. 20, p. 1149 - 1152
  作者：Tedjamulia, Marvin L.、Tominaga, Yoshinori、Castle, Raymond N.、Lee, Milton L.

  DOI：——

  日期：——
• Desulfurization of benzo- and dibenzothiophenes with nickel boride
  作者：Thomas G. Back、Kexin Yang、H. Roy Krouse

  DOI：10.1021/jo00033a017

  日期：1992.3

  Nickel boride, prepared from the reduction of nickel chloride hexahydrate with sodium borohydride in methanol-tetrahydrofuran, reduces benzothiophenes to alkylbenzenes and dibenzothiophenes to biphenyls. The reaction is rapid at or below room temperature and does not require protection from the atmosphere. Best results are obtained when the nickel boride is generated in situ in the presence of the sulfur compound. Hydroxyl, carboxyl, ester, and amino groups are unaffected while chloro, bromo, and nitro substituents are also reduced under these conditions. A short-lived intermediate, possibly a nickel hydride species, appears to be required in the desulfurization. Complexation of the substrate to the nickel boride surface, followed by stepwise reduction of the two C-S bonds, occurs. The faster disappearance of dibenzothiophene containing the lighter S-32 isotope compared to that with S-34 (k(S-32)/k(S-34) = 1.005 to 1.006) suggests that C-S bond cleavage is the rate-determining step.
• TEDJAMULIA, M. L.;TOMINAGA, YOSHINORI;CASTLE, R. N.;LEE, M. L., J. HETEROCYCL. CHEM., 1983, 20, N 5, 1149-1152
  作者：TEDJAMULIA, M. L.、TOMINAGA, YOSHINORI、CASTLE, R. N.、LEE, M. L.

  DOI：——

  日期：——