3,3'-dimethoxy-2,2'-bithiophene | 144852-97-1

• 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: 3,3'-dimethoxy-2,2'-bithiophene
• 英文别名: 5,5'-dimethoxy-2,2'-bithiophene；2-Methoxy-5-(5-methoxythiophen-2-yl)thiophene
• CAS: 144852-97-1
• 化学式: C₁₀H₁₀O₂S₂
• 分子量: 226.32
• InChiKey: OFJKLNXFMRYSCR-UHFFFAOYSA-N

物化性质

• 熔点：
  84-85 °C
• 沸点：
  318.8±37.0 °C(Predicted)
• 密度：
  1.245±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  74.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  5-甲氧基-2-甲基吲哚 、 3,3'-dimethoxy-2,2'-bithiophene 在 indium(III) triflate 作用下， 以 1,4-二氧六环 、 甲苯 为溶剂， 反应 65.0h， 以63%的产率得到5,5'-bis(5-methoxy-2-methyl-1H-indol-3-yl)-2,2'-bithiophene
  参考文献：
  名称：

  通过亲核芳香取代形成的铟催化杂芳基-杂芳基键形成

  摘要：

  独特的性能：在铟催化下，通过亲核芳族取代（S N Ar）制备了二，三和四杂杂芳基。这是基于两个杂芳基底物之间基于S N Ar的催化杂芳基-杂芳基键催化形成的第一个示例，无需活化基团来增强其反应性（参见方案； El =亲电子试剂，In = In（OTf）3或In（ONf）3，Nu ＝亲核试剂）。

  DOI：

  10.1002/anie.201005750
• 作为产物：
  描述：

  3-甲氧基噻吩 在 正丁基锂 、 copper dichloride 作用下， 生成 3,3'-dimethoxy-2,2'-bithiophene
  参考文献：
  名称：

  Structure of 3,3'-dimethoxy-2,2'-bithiophene and comparison with quantum-mechanical calculations

  摘要：

  DOI：

  10.1107/s0108768188002551

文献信息

• Palladium-Catalyzed C–H Homocoupling of Furans and Thiophenes Using Oxygen as the Oxidant
  作者：Na-Na Li、Yan-Lei Zhang、Shuai Mao、Ya-Ru Gao、Dong-Dong Guo、Yong-Qiang Wang

  DOI：10.1021/ol501019y

  日期：2014.5.16

  A general and efficient palladium-catalyzed intermolecular direct C–H homocoupling of furans and thiophenes has been developed. The reaction is characterized by using molecular oxygen as the sole oxidant and complete C5-position regioselectivity. Both C2- and C3-substituted furans or thiophenes are appropriate substrates. The approach provides a straightforward, facile, and economical route to bifurans

  已开发出一种通用且有效的呋喃和噻吩钯催化的分子间直接CH-H均偶联剂。该反应的特征在于使用分子氧作为唯一氧化剂和完全的C5位区域选择性。C 2和C 3取代的呋喃或噻吩都是合适的底物。该方法在温和的反应条件下提供了直接，简便且经济的途径制备双呋喃和联噻吩。
• Pd-catalyzed oxidative cross-coupling between two electron rich heteroarenes
  作者：Chun-Yang He、Zhen Wang、Cai-Zhi Wu、Feng-Ling Qing、Xingang Zhang

  DOI：10.1039/c3sc51278a

  日期：——

  The transition-metal-catalyzed oxidative cross-coupling between two coupling partners with similar structure and electronic characteristics remains a challenge owing to difficulty in suppressing undesired homo-couplings. We herein report a Pd-catalyzed oxidative cross-coupling between two thiophenes under mild reaction conditions. This approach can also be extended to furans. Some notable advantages

  具有相似结构和电子特性的两个偶联配偶之间的过渡金属催化的氧化交叉偶联由于难以抑制不希望的均相偶联而仍然是一个挑战。我们在本文中报道了在温和的反应条件下，两个噻吩之间的Pd催化的氧化交叉偶联。这种方法也可以扩展到呋喃。该反应的一些显着优点在于其合成简单，省去了有毒的锡烷偶联伙伴，并且具有出色的官能团相容性。该协议的特征使其成为构建电子和光电子材料中感兴趣的2,2'-噻吩-噻吩键合的理想策略。
• Synthesis and Solvatochromic Properties of Donor-Acceptor-Substituted Oligothiophenes
  作者：Franz Effenberger、Frank Wuerthner、Felix Steybe

  DOI：10.1021/jo00112a032

  日期：1995.4

  The Pd-catalyzed cross coupling reaction of electron donor-substituted thiophenes 1 with electron acceptor-substituted halothiophenes 2,10 via organozinc intermediates or organotin compounds 5 to give bi-, ter-, and quaterthiophenes 3, 4, 6, 8, 12, 13, and 14 is described. (Dimethylamino)-bithiophenes 8 with acceptor groups of varying reactivity were prepared via 5d in 60-80% yield, whereas bithiophenes 6d,e were obtained as a mixture with phenylthiophenes 7d,e. Symmetrical substituted byproducts 11 were formed in the conversion of 1b with bromothiophenes 10 via organozinc compounds yielding oligothiophenes 6b and 12. The ter- and quaterthiophenes 13 and 14 were isolated in about 50-70% yield. The electronic interactions between donor and acceptor end groups in the conjugated bithiophenes 3, 4, and 8 are expressed in the intensive and markedly solvatochromic CT transitions. The solvatochromic behavior of 3, 4, and 8 was determined by linear regression analyses of absorption maxima in 11 solvents, whereby bithiophene 3d was found to be a very appropriate indicator dye whose absorption wavenumbers ($) over bar nu(max)(3d) in aliphatic and dipolar aprotic and-on consideration of the polarizability correction term d delta-in aromatic and chlorinated solvents excellently correlate with the pi* values defined by Kamlet and Taft.