2,5-dibromo-3-(4-pyridyl)thiophene | 143584-39-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 英文名称: 2,5-dibromo-3-(4-pyridyl)thiophene
• 英文别名: 4-(2,5-Dibromothiophen-3-yl)pyridine
• CAS: 143584-39-8
• 化学式: C₉H₅Br₂NS
• 分子量: 319.019
• InChiKey: YGLXIRBGVBGDTK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  41.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2,5-dibromo-3-(4-pyridyl)thiophene 在 正丁基锂 、 硼酸三乙酯 、 水 、 双氧水 作用下， 反应 0.5h， 生成 4-(4-pyridyl)thiophene-2(5H)-one
  参考文献：
  名称：

  Pyridine-Substituted Hydroxythiophenes. I. Preparation of o-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes.

  摘要：

  2-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes and 4-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes dagger have been prepared by hydrogen peroxide oxidation of the corresponding boronic esters. In the former case the boronic esters were obtained in three steps from 2,3-dibromothiophene via the corresponding 3-bromo-2-pyridylthiophenes synthesized by Pd(0)-catalyzed coupling between 3-bromo-2-trimethylstannylthiophene and the corresponding bromopyridines. In the latter case the known isomeric pyridylthiophenes were converted into the corresponding boronic esters in three steps via tribromo- and 3-bromo-4-pyridylthiophenes successively. 4-(3- and 4-pyridyl)thiophen-2(5H)-ones were also obtained in the syntheses of 4-(3- and 4-pyridyl)-3-hydroxythiophene. They are suggested to arise from rearrangement during the halogen-metal exchange. Spectroscopic investigations by H-1 NMR and IR show that these hydroxythiophene systems exist exclusively as enol forms.

  DOI：

  10.3891/acta.chem.scand.46-0654
• 作为产物：
  描述：

  4-(thiophen-3-yl)pyridine 在 N-溴代丁二酰亚胺(NBS) 作用下， 以 溶剂黄146 为溶剂， 以60%的产率得到2,5-dibromo-3-(4-pyridyl)thiophene
  参考文献：
  名称：

  使用有机场效应晶体管感测烷基化剂

  摘要：

  烷基化剂是简单的反应性分子，通常用于许多领域，例如有机合成，医药和农业。一些高反应性烷基化物质也被用作起泡化学战剂。由于烷基化剂的高反应性和简单的结构，因此检测和鉴定并不是一个简单的问题。在这里，报道了一种新型的能够与烷基化剂反应的聚噻吩衍生物，以及其在使用有机场效应晶体管OFET装置对烷基化剂进行直接电感测中的应用。与烷基化剂反应后，包含新的聚噻吩类似物作为其通道的OFET变为导电性，并且失去了栅极效应。这与OFET对“无害”蒸气的反应形成鲜明对比，如酒精和丙酮。通过跟踪栅极偏置下的漏-源电流，可以轻松地跟踪分析物向聚噻吩通道的吸收过程及其随后的反应。

  DOI：

  10.1002/adfm.200901598

文献信息

• Pyridine-substituted hydroxythiophenes. IV. Preparation of 3- and 4-(2-, 3- and 4-pyridyl)-2-hydroxythiophenes
  作者：Yihua Zhang、Anna-Britta Hörnfeldt、Salo Gronowitz

  DOI：10.1002/jhet.5570320209

  日期：1995.3

  boron tribromide to give 3-(3-pyridyl)-3-thiolene-2-one, which only was stable in ether solution at −20°. The attempted demethylation of 2-methoxy-3-(2-pyridyl)thiophene with trimethylsilane chloride/sodium iodide in refluxing acetonitrile led to a dimer. Demethylation of the 2-methoxy-3-pyridylthiophenes with dibenzyl diselenide and sodium borohydride gave 3-pyridylthiophan-2-ones.

  通过三个异构体溴吡啶与3-三甲基锡烷基-2-甲氧基噻吩的Pd（0）-催化偶合，已经以高收率制备了3-（2-，3-和4-吡啶基）-2-甲氧基噻吩。该化合物是通过3-溴-2-甲氧基噻吩的卤素-金属交换，然后进行甲锡烷基化反应制得的。通过2-甲氧基噻吩的二溴化和α-脱溴制备3-溴-2-甲氧基噻吩。使用各种试剂对2-甲氧基-3-吡啶基噻吩进行脱甲基的大多数尝试均失败了，这可能是由于所需的3-吡啶基-2-羟基噻吩系统的不稳定性和高反应活性。只有2-甲氧基-3-（3-吡啶基）噻吩与三溴化硼反应生成3-（3-吡啶基）-3-噻吩-2-酮，其仅在-20℃的醚溶液中稳定。在回流的乙腈中尝试用三甲基硅烷氯化物/碘化钠使2-甲氧基-3-（2-吡啶基）噻吩脱甲基化导致了二聚体。用二苄基二硒化物和硼氢化钠对2-甲氧基-3-吡啶基噻吩进行脱甲基，得到3-吡啶基噻吩-2-酮。
• Method for identifying electrophiles and nucleophiles in a sample
  申请人：Eichen Yoav

  公开号：US20090258430A1

  公开（公告）日：2009-10-15

  A method and device for identifying a molecule in a sample, the molecule comprising an electrophilic or nucleophilic moiety. The method comprises contacting the sample with a plurality of chemosensors, each of the chemosensors comprising a π-conjugated system and a moiety having a nucleophilic property or an electrophilic property; and measuring an electromagnetic property of each of the chemosensors in the sample; whereby the pattern of changes in the electromagnetic properties of the plurality of chemosensors after chemically reacting with the electrophile or nucleophile of the molecule identifies the molecule in said sample. The device comprises a substrate carrying a plurality of chemosensor molecules having at least one predetermined electromagnetic property, the at least one electromagnetic property being changeable by subjecting the chemosensor molecules to a sample containing at least one electrophile or nuclephile, wherein the pattern of change of the electromagnetic property of the plurality of chemosensor molecules allows the device to identify the electrophile or nuclephile in the sample.

  一种用于识别样品中分子的方法和装置，该分子包括亲电或亲核基团。该方法包括将样品与多个化学传感器接触，每个化学传感器包括一个π-共轭系统和一个具有亲核性或亲电性的基团；并测量样品中每个化学传感器的电磁性质；因此，在化学反应与分子的亲电或亲核基团后，多个化学传感器的电磁性质的变化模式可以识别样品中的分子。该装置包括一个基板，携带多个化学传感器分子，具有至少一个预定的电磁性质，至少一个电磁性质可通过将化学传感器分子暴露于包含至少一个亲电或亲核物质的样品中而改变，多个化学传感器分子的电磁性质的变化模式允许该装置识别样品中的亲电或亲核物质。
• METHOD FOR IDENTIFYING ELECTROPHILES AND NUCLEOPHILES IN A SAMPLE
  申请人：Eichen Yoav

  公开号：US20110281742A1

  公开（公告）日：2011-11-17

  A method and device for identifying a molecule in a sample, the molecule comprising an electrophilic or nucleophilic moiety. The method comprises contacting the sample with a plurality of chemosensors, each of the chemosensors comprising a π-conjugated system and a moiety having a nucleophilic property or an electrophilic property; and measuring an electromagnetic property of each of the chemosensors in the sample; whereby the pattern of changes in the electromagnetic properties of the plurality of chemosensors after chemically reacting with the electrophile or nucleophile of the molecule identifies the molecule in said sample. The device comprises a substrate carrying a plurality of chemosensor molecules having at least one predetermined electromagnetic property, the at least one electromagnetic property being changeable by subjecting the chemosensor molecules to a sample containing at least one electrophile or nuclephile, wherein the pattern of change of the electromagnetic property of the plurality of chemosensor molecules allows the device to identify the electrophile or nuclephile in the sample.

  一种用于鉴定样品中分子的方法和装置，其中该分子包含一个亲电或亲核基团。该方法包括将样品与多个化学传感器接触，每个化学传感器包括一个π共轭系统和一个具有亲核性或亲电性的基团；并测量样品中每个化学传感器的电磁性质；因此，在化学反应后，多个化学传感器的电磁性质变化的模式可以鉴定样品中的分子。该装置包括一个基质，携带有多个化学传感器分子，其中至少有一个预定的电磁性质，通过将化学传感器分子置于至少含有一个亲电或亲核物的样品中，可以改变至少一个电磁性质，多个化学传感器分子的电磁性质变化模式允许该装置鉴定样品中的亲电或亲核物。
• US9518964B2
  申请人：——

  公开号：US9518964B2

  公开（公告）日：2016-12-13
• Pyridine-Substituted Hydroxythiophenes. I. Preparation of o-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes.
  作者：Salo Gronowitz、Yihua Zhang、Anna-Britta Hörnfeldt、Erik Högfeldt、P. Spielbüchler、Jørgen B. Pedersen、Povl Krogsgaard-Larsen

  DOI：10.3891/acta.chem.scand.46-0654

  日期：——

  2-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes and 4-(2-, 3- and 4-pyridyl)-3-hydroxythiophenes dagger have been prepared by hydrogen peroxide oxidation of the corresponding boronic esters. In the former case the boronic esters were obtained in three steps from 2,3-dibromothiophene via the corresponding 3-bromo-2-pyridylthiophenes synthesized by Pd(0)-catalyzed coupling between 3-bromo-2-trimethylstannylthiophene and the corresponding bromopyridines. In the latter case the known isomeric pyridylthiophenes were converted into the corresponding boronic esters in three steps via tribromo- and 3-bromo-4-pyridylthiophenes successively. 4-(3- and 4-pyridyl)thiophen-2(5H)-ones were also obtained in the syntheses of 4-(3- and 4-pyridyl)-3-hydroxythiophene. They are suggested to arise from rearrangement during the halogen-metal exchange. Spectroscopic investigations by H-1 NMR and IR show that these hydroxythiophene systems exist exclusively as enol forms.