2-(3-cyanophenyl)-benzo[b]thiophene | 1023489-12-4

• 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-(3-cyanophenyl)-benzo[b]thiophene
• 英文别名: 2-(3-cyanophenyl)benzo[b]thiophene；3-(benzothiophen-2-yl)benzonitrile；3-(1-Benzothiophen-2-yl)benzonitrile
• CAS: 1023489-12-4
• 化学式: C₁₅H₉NS
• 分子量: 235.309
• InChiKey: DRGCWHDTSKRHGS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  52
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3-bromo-2-(3-cyanophenyl)benzo[b]thiophene 在 sodium tetrahydroborate 、 1,1'-双(二苯膦基)二茂铁二氯化钯(II)二氯甲烷复合物 、 四甲基乙二胺 作用下， 以 四氢呋喃 为溶剂， 反应 5.0h， 以95%的产率得到2-(3-cyanophenyl)-benzo[b]thiophene
  参考文献：
  名称：

  Room-Temperature Hydrodehalogenation of Halogenated Heteropentalenes with One or Two Heteroatoms

  摘要：

  The pair NaBH4-TMEDA as a hydride source and catalytic PdCl2(4ppf) in THF prove to be an efficient system for the hydrodehalogenation of bromo(chloro)-heteropentalenes. with one or two heteroatoms, while Pd(OAc)(2)/PPh3 is able to reduce reactive haloheteropentalenes, and PdCl2(tbpf) allows the removal of the 2-chlorine from a thiophene ring. The reaction conditions tolerate various functional groups, allowing highly chemoselective reactions in the presence of halide, ester, alkyne, alkene, and nitrile substituents and also showing good efficiency in the regioselective hydrodehalogenation of a variety of polyhalogenated substrates.

  DOI：

  10.1021/jo3019335

文献信息

• Rh(III)-Catalyzed Decarboxylative <i>ortho</i>-Heteroarylation of Aromatic Carboxylic Acids by Using the Carboxylic Acid as a Traceless Directing Group
  作者：Xurong Qin、Denan Sun、Qiulin You、Yangyang Cheng、Jingbo Lan、Jingsong You

  DOI：10.1021/acs.orglett.5b00532

  日期：2015.4.3

  ortho-heteroarylation of aromatic carboxylic acids with various heteroarenes has been developed through Rh(III)-catalyzed two-fold C–H activation, which exhibits a wide substrate scope of both aromatic carboxylic acids and heteroarenes. The use of naturally occurring carboxylic acid as the directing group avoids troublesome extra steps for installation and removal of an external directing group.

  芳香族羧酸与各种杂芳烃的高选择性脱羧邻杂芳基化反应是通过Rh（III）催化的2倍C–H活化而开发的，这显示了芳香族羧酸和杂芳烃的广泛底物范围。使用天然存在的羧酸作为导向基团避免了麻烦的用于安装和除去外部导向基团的额外步骤。
• Phosphine-free palladium-catalysed direct C2-arylation of benzothiophenes with aryl bromides
  作者：Liqin Zhao、Christian Bruneau、Henri Doucet

  DOI：10.1016/j.tet.2013.06.037

  日期：2013.8

  some electron-rich aryl bromides. The presence of a methyl or a formyl substituent at C3 of benzothiophene has a minor influence on the reactivity, and even a bromo substituents at C3 is tolerated. A wide variety of functional groups on the aryl bromide, such as nitrile, nitro, acetyl, formyl, ester, chloro, fluoro or trifluoromethyl has been employed.

  发现无配体的Pd（OAc）2在低催化剂浓度下非常有效地催化苯并噻吩衍生物的直接C2-芳基化。该反应可使用少至0.5-0.1 mol％的催化剂，具有缺电子和一些富电子的芳基溴化物来进行。苯并噻吩的C3处甲基或甲酰基取代基的存在对反应性的影响很小，甚至C3处的溴取代基也是可以容忍的。已经使用了芳基溴上的各种官能团，例如腈，硝基，乙酰基，甲酰基，酯，氯，氟或三氟甲基。
• Room-Temperature Hydrodehalogenation of Halogenated Heteropentalenes with One or Two Heteroatoms
  作者：Giorgio Chelucci、Salvatore Baldino、Andrea Ruiu

  DOI：10.1021/jo3019335

  日期：2012.11.2

  The pair NaBH4-TMEDA as a hydride source and catalytic PdCl2(4ppf) in THF prove to be an efficient system for the hydrodehalogenation of bromo(chloro)-heteropentalenes. with one or two heteroatoms, while Pd(OAc)(2)/PPh3 is able to reduce reactive haloheteropentalenes, and PdCl2(tbpf) allows the removal of the 2-chlorine from a thiophene ring. The reaction conditions tolerate various functional groups, allowing highly chemoselective reactions in the presence of halide, ester, alkyne, alkene, and nitrile substituents and also showing good efficiency in the regioselective hydrodehalogenation of a variety of polyhalogenated substrates.