2-(2-cyclopropylethynyl)pyrazine | 1221793-78-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 2-(2-cyclopropylethynyl)pyrazine
• 英文别名: 2-(cyclopropylethynyl)pyrazine
• CAS: 1221793-78-7
• 化学式: C₉H₈N₂
• 分子量: 144.176
• InChiKey: BPWJCYGPHKTSLT-UHFFFAOYSA-N

物化性质

• 沸点：
  269.4±20.0 °C(Predicted)
• 密度：
  1.17±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(2-cyclopropylethynyl)pyrazine 、 2-甲氧基-1,4-萘醌 以 苯 为溶剂， 以70%的产率得到1-cyclopropyl-2a-methoxy-2-pyrazin-2-yl-8aH-cyclobuta[b]naphthalene-3,8-dione
  参考文献：
  名称：

  Small molecular inhibitors of miR-1 identified from photocycloadducts of acetylenes with 2-methoxy-1,4-naphthalenequinone

  摘要：

  Small molecules which can modulate endogenous microRNAs are important chemical tools to study microRNA regulational network. In this Letter we screened the [2+2] photocycloadducts of 2-methoxy-1,4-naphthalenequinone with a series of aryl acetylenes on their activity to modulate endogenous microRNAs. A potent inhibitor of the muscle-specific miR-1 which is closely related with cardiac development and disease was identified. The small molecular inhibitor was the cyclobutene type product derived from the photocycloaddition of 2-methoxy-1,4-naphthalenequinone with tert-butyl (5-(phenylethynyl) quinolin-8-yl) carbonate. Analogues of the small molecular inhibitor were then prepared using similar photocycloaddition reactions for evaluation on inhibition activity on miR-1 to provide structure-activity relationship of the miR-1 inhibitor. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2013.04.058
• 作为产物：
  描述：

  2-氯吡嗪 、 环丙乙炔 在 copper(l) iodide 、 四(三苯基膦)钯 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 以61%的产率得到2-(2-cyclopropylethynyl)pyrazine
  参考文献：
  名称：

  异喹啉-1,3,4-三酮与炔烃的光诱导串联反应以构建氮杂多环化合物

  摘要：

  异喹啉-1,3,4-三酮（3）与氮杂芳基取代的乙炔（4a - 4o）的光诱导串联反应被描述为构建新型氮杂多环化合物的有效方法。大多数反应是通过光诱导的[2 + 2]环加成反应（Paterno-Büchi反应）-氧杂环丁烯电环开环-己三烯至菲型电环化-氧化脱氢的串联反应顺序。使用异喹啉三酮与被吡啶，嘧啶，吡嗪和喹啉等不同氮杂芳基环取代的乙炔进行的这些光串联反应，我们能够获得各种杂多氮杂多环骨架，其中异喹啉二酮与萘，喹啉或异喹啉，喹唑啉，喹喔啉和苯并菲合，产率分别高达85％。讨论了[2 + 2]光环加成反应的区域选择性和反应顺序中导致形成不同的氮杂-多环系统的电环化反应。

  DOI：

  10.1021/jo100218w

文献信息

• CsF-Mediated in Situ Desilylation of TMS-Alkynes for Sonogashira Reaction
  作者：Joseph S. Capani、John E. Cochran、Jianglin (Colin) Liang

  DOI：10.1021/acs.joc.9b01307

  日期：2019.7.19

  A practical and mild set of conditions for the Sonogashira reaction utilizing CsF-mediated in situ TMS-alkyne desilylation followed by Sonogashira coupling has been developed for the synthesis of a variety of alkynyl benzenes and heteroarenes in good to excellent yields. This methodology demonstrates excellent functional group tolerance and simple purification, which allows large-scale industrial applications

  利用CsF介导的原位TMS-炔基甲硅烷基化和随后的Sonogashira偶联，已为Sonogashira反应开发了一套实用且温和的条件，以良好的收率合成了各种炔基苯和杂芳烃。该方法论证明了出色的官能团耐受性和简单的纯化方法，可用于大规模工业应用。这一一锅协议可避免挑战性的游离炔分离，从而实现高产Sonogashira与挥发性炔的偶联。
• A universal activator of microRNAs identified from photoreaction products
  作者：Xuejiao Chen、Chengmei Huang、Wenjie Zhang、Yihan Wu、Xi Chen、Chen-yu Zhang、Yan Zhang

  DOI：10.1039/c2cc32157b

  日期：——

  A small molecule activator of microRNAs has been identified from photoreaction products of naphthalene-1,4-dione with acetylenes and the universal activation on miRNAs was realized through significant promotion on the processing of precursor microRNAs by the compound.

  从萘-1,4-二酮与乙炔的光反应产物中发现了一种小分子 microRNA 激活剂，通过该化合物对前体 microRNA 处理的显著促进作用，实现了对 miRNA 的普遍激活。
• Photoinduced Tandem Reactions of Isoquinoline-1,3,4-trione with Alkynes To Build Aza-polycycles
  作者：Haitao Yu、Jinbo Li、Zhuangfei Kou、Xuewen Du、Yi Wei、Hoong-Kun Fun、Jianhua Xu、Yan Zhang

  DOI：10.1021/jo100218w

  日期：2010.5.7

  Photoinduced tandem reactions of isoquinoline-1,3,4-triones (3) with azaaryl substituted acetylenes (4a−4o) are described as an efficient method to build novel aza-polycycles. Most of the reactions proceeded via the tandem reaction sequence of photoinduced [2 + 2] cycloaddition (the Paterno−Büchi reaction)-oxetene electrocyclic ring opening-hexatriene to phenanthrene type electrocyclization-oxidative

  异喹啉-1,3,4-三酮（3）与氮杂芳基取代的乙炔（4a - 4o）的光诱导串联反应被描述为构建新型氮杂多环化合物的有效方法。大多数反应是通过光诱导的[2 + 2]环加成反应（Paterno-Büchi反应）-氧杂环丁烯电环开环-己三烯至菲型电环化-氧化脱氢的串联反应顺序。使用异喹啉三酮与被吡啶，嘧啶，吡嗪和喹啉等不同氮杂芳基环取代的乙炔进行的这些光串联反应，我们能够获得各种杂多氮杂多环骨架，其中异喹啉二酮与萘，喹啉或异喹啉，喹唑啉，喹喔啉和苯并菲合，产率分别高达85％。讨论了[2 + 2]光环加成反应的区域选择性和反应顺序中导致形成不同的氮杂-多环系统的电环化反应。
• Small molecular inhibitors of miR-1 identified from photocycloadducts of acetylenes with 2-methoxy-1,4-naphthalenequinone
  作者：Su-Bee Tan、Chengmei Huang、Xuejiao Chen、Yihan Wu、Mi Zhou、Chenyu Zhang、Yan Zhang

  DOI：10.1016/j.bmc.2013.04.058

  日期：2013.10

  Small molecules which can modulate endogenous microRNAs are important chemical tools to study microRNA regulational network. In this Letter we screened the [2+2] photocycloadducts of 2-methoxy-1,4-naphthalenequinone with a series of aryl acetylenes on their activity to modulate endogenous microRNAs. A potent inhibitor of the muscle-specific miR-1 which is closely related with cardiac development and disease was identified. The small molecular inhibitor was the cyclobutene type product derived from the photocycloaddition of 2-methoxy-1,4-naphthalenequinone with tert-butyl (5-(phenylethynyl) quinolin-8-yl) carbonate. Analogues of the small molecular inhibitor were then prepared using similar photocycloaddition reactions for evaluation on inhibition activity on miR-1 to provide structure-activity relationship of the miR-1 inhibitor. (C) 2013 Elsevier Ltd. All rights reserved.