4-(5'-formyl-2,2'-bithiophenyl-5-yl)benzonitrile | 1268709-35-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 双噻吩和低聚噻吩
• 英文名称: 4-(5'-formyl-2,2'-bithiophenyl-5-yl)benzonitrile
• 英文别名: 4-(5'-formyl-2,2'-bithiophen-5-yl)benzonitrile
• CAS: 1268709-35-8
• 化学式: C₁₆H₉NOS₂
• 分子量: 295.386
• InChiKey: HDKTZGFNKZPZJL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.83
• 重原子数：
  20.0
• 可旋转键数：
  3.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  40.86
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  4-(5'-formyl-2,2'-bithiophenyl-5-yl)benzonitrile 、 3,4-二氨基苯甲腈 在 sodium hydrogensulfite 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以74%的产率得到2-[5'-(4-cyanophenyl)-2,2'-bithiophen-5-yl]-1H-benzimidazole-6-carbonitrile
  参考文献：
  名称：

  Synthesis of Novel Bithiophene-Substituted Heterocycles Bearing Carbonitrile Groups

  摘要：

  Symmetrical and unsymmetrical bithiophene-substituted heterocycles bearing carbonitriles including imidazo[1,2-a]pyridine, benzimidazole, and pyridine derivatives have been synthesized via different synthetic protocols. The bithiophene bis-imidazo[1,2-a] pyridine derivatives 3a,b were achieved in three steps starting from 2-acetyl-5-bromothiophene. Suzuki coupling reaction of 2a with 5-formylthiophen-2-ylboronic acid forms the formyl derivative 5, which by condensation with 3,4-diaminobenzonitrile in the presence of sodium bisulfite furnishes the unsymmetrical bithiophene derivative6. The bis-benzimidazole derivative 8 was obtained via hexabutylditin-mediated homocoupling of 5-bromothiophene-2-carboxaldehyde, while the benzimidazole derivatives 12a,b were prepared via the formyl derivatives 11a,b, a product of Velsmier formylation reaction of 10a,b. Two synthetic protocols for the aryl/hetaryl-2,2'-bithiophene derivative 14 have also been presented. In addition, the guanyl hydrazones of bithiophenes, 16 and 17, were prepared from bis(tri-n-butylstannyl)-2,2'-bithiophene through a Stille coupling reaction followed by a condensation step.

  DOI：

  10.1080/00397910903537364
• 作为产物：
  描述：

  2-(tri-n-butyl)stannyl-5,2'-bithiophene 在 四(三苯基膦)钯 、 三氯氧磷 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 生成 4-(5'-formyl-2,2'-bithiophenyl-5-yl)benzonitrile
  参考文献：
  名称：

  Synthesis of Novel Bithiophene-Substituted Heterocycles Bearing Carbonitrile Groups

  摘要：

  Symmetrical and unsymmetrical bithiophene-substituted heterocycles bearing carbonitriles including imidazo[1,2-a]pyridine, benzimidazole, and pyridine derivatives have been synthesized via different synthetic protocols. The bithiophene bis-imidazo[1,2-a] pyridine derivatives 3a,b were achieved in three steps starting from 2-acetyl-5-bromothiophene. Suzuki coupling reaction of 2a with 5-formylthiophen-2-ylboronic acid forms the formyl derivative 5, which by condensation with 3,4-diaminobenzonitrile in the presence of sodium bisulfite furnishes the unsymmetrical bithiophene derivative6. The bis-benzimidazole derivative 8 was obtained via hexabutylditin-mediated homocoupling of 5-bromothiophene-2-carboxaldehyde, while the benzimidazole derivatives 12a,b were prepared via the formyl derivatives 11a,b, a product of Velsmier formylation reaction of 10a,b. Two synthetic protocols for the aryl/hetaryl-2,2'-bithiophene derivative 14 have also been presented. In addition, the guanyl hydrazones of bithiophenes, 16 and 17, were prepared from bis(tri-n-butylstannyl)-2,2'-bithiophene through a Stille coupling reaction followed by a condensation step.

  DOI：

  10.1080/00397910903537364

文献信息

• Palladium‐Catalysed Direct Monoarylation of Bithiophenyl Derivatives or Bis(thiophen‐2‐yl)methanone with Aryl Bromides
  作者：Karima Si Larbi、Safia Djebbar、Henri Doucet

  DOI：10.1002/ejic.201100294

  日期：2011.8

  Arylated bithiophenes, which are useful compounds due to their coordination and/or physical properties, can be easily prepared by palladium-catalysed C–H bond activation of heteroaromatics followed by arylation using electron-deficient aryl bromides. A variety of 5-arylated 2,2′-bithiophenyl derivatives have been prepared. Good yields were generally obtained by using the air-stable [PdCl(dppb)(C3H5)]

  芳基化联噻吩由于其配位和/或物理性质而成为有用的化合物，可以通过钯催化的杂芳烃的 C-H 键活化，然后使用缺电子的芳基溴化物进行芳基化来轻松制备。已经制备了多种 5-芳基化 2,2'-联噻吩衍生物。通过使用空气稳定的 [PdCl(dppb)(C3H5)] 配合物作为催化剂，通常可以获得良好的产率。芳基溴上的一系列官能团，例如乙酰基、甲酰基、酯、腈、三氟甲基、氟和羟烷基，是可以容忍的。