5-(difluoromethyl)pyrimidine-2-carbonitrile | 1416821-62-9

• 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: 5-(difluoromethyl)pyrimidine-2-carbonitrile
• 英文别名: 2-Pyrimidinecarbonitrile, 5-(difluoromethyl)-
• CAS: 1416821-62-9
• 化学式: C₆H₃F₂N₃
• 分子量: 155.107
• InChiKey: GRSQZKSPKFYCIG-UHFFFAOYSA-N

物化性质

• 沸点：
  277.3±48.0 °C(Predicted)
• 密度：
  1.37±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  49.6
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  2-氰基嘧啶 在 (1,5-cyclooctadiene)(methoxy)iridium(I) dimer 、 3,4,7,8-四甲基-1,10-菲罗啉 、 potassium carbonate 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 36.0h， 生成 5-(difluoromethyl)pyrimidine-2-carbonitrile
  参考文献：
  名称：

  从Ag到Pd的两种配体转移：在途中（SIPr）Pd（CF2H）（X）的转移及其在一锅CH硼化/二氟甲基化中的应用。

  摘要：

  NHC配体和二氟甲基基团从[（SIPr）Ag（CF2H）]同时转移到PdX2（X = Cl，OAc和OPiv）的过程，用于制备[（SIPr）Pd（CF2H）X描述复合物。这些络合物是空气稳定的，易于通过芳基频哪醇硼酸酯/还原消除进行重金属化，从而以高收率生成ArCF2H。基于这一发现，开发了用于制备二氟甲基化（杂）芳烃的第一个单锅CH硼化和二氟甲基化方法。

  DOI：

  10.1021/acs.joc.9b03296

文献信息

• [EN] DIFLUOROMETHYLATION OF UNSATURATED COMPOUNDS<br/>[FR] DIFLUOROMÉTHYLATION DE COMPOSÉS INSATURÉS
  申请人：SCRIPPS RESEARCH INST

  公开号：WO2013082028A1

  公开（公告）日：2013-06-06

  A reagent for carrying out a difluoromethylation reaction of unsaturated compounds and ring-nitrogen-containing aromatic compounds, a zinc difluoro-methanesulfinate, as well as a method for making the reagent and a method for its use are disclosed.

  一种用于执行不饱和化合物和含环氮芳香化合物的二氟甲基化反应的试剂，以及一种锌二氟甲磺酸酯，以及制造该试剂的方法及其用途。
• Palladium-catalyzed difluoromethylation of heteroaryl chlorides, bromides and iodides
  作者：Changhui Lu、Yang Gu、Jiang Wu、Yucheng Gu、Qilong Shen

  DOI：10.1039/c7sc00691h

  日期：——

  A palladium-catalyzed difluoromethylation of a series of heteroaryl chlorides, bromides and iodides under mild conditions is described. A wide range of heteroaryl halides such as pyridyl, pyrimidyl, pyrazyl, funanyl, thienyl, pyazolyl, imidazolyl, thiazolyl, and oxazolyl halides were efficiently difluoromethylated, thus providing medicinal chemists an alternative choice for the preparation of drug

  描述了在温和条件下一系列杂芳基氯化物，溴化物和碘化物的钯催化的二氟甲基化。各种杂芳基卤化物（例如吡啶基，嘧啶基，吡唑基，呋喃基，噻吩基，吡唑基，咪唑基，噻唑基和恶唑基卤化物）被有效地二氟甲基化，因此为药物化学家提供了制备具有二氟甲基化杂芳基单元的候选药物的替代选择。
• Practical and innate carbon–hydrogen functionalization of heterocycles
  作者：Yuta Fujiwara、Janice A. Dixon、Fionn O’Hara、Erik Daa Funder、Darryl D. Dixon、Rodrigo A. Rodriguez、Ryan D. Baxter、Bart Herlé、Neal Sach、Michael R. Collins、Yoshihiro Ishihara、Phil S. Baran

  DOI：10.1038/nature11680

  日期：2012.12.6

  It is shown that zinc sulphinate salts can be used to transfer alkyl radicals to heterocycles, allowing for the mild, direct and operationally simple formation of medicinally relevant carbon–carbon bonds while reacting in a complementary fashion to other innate carbon–hydrogen functionalization methods. Nitrogen-rich heterocycles feature widely in pharmaceuticals, and their synthesis has been simplified by a series of advances in transition-metal-mediated cross-coupling reactions. However, the development of practical and selective C–H functionalization methods that do not rely upon pre-functionalized starting materials is an underdeveloped area. Here the authors report that zinc sulphinate salts can be used to transfer alkyl radicals to heterocycles, allowing for a mild, direct and operationally simple formation of medicinally relevant C–C bonds while reacting in an orthogonal fashion to other innate C–H functionalization methods. Nitrogen-rich heterocyclic compounds have had a profound effect on human health because these chemical motifs are found in a large number of drugs used to combat a broad range of diseases and pathophysiological conditions. Advances in transition-metal-mediated cross-coupling have simplified the synthesis of such molecules; however, C–H functionalization of medicinally important heterocycles that does not rely on pre-functionalized starting materials is an underdeveloped area1,2,3,4,5,6,7,8,9. Unfortunately, the innate properties of heterocycles that make them so desirable for biological applications—such as aqueous solubility and their ability to act as ligands—render them challenging substrates for direct chemical functionalization. Here we report that zinc sulphinate salts can be used to transfer alkyl radicals to heterocycles, allowing for the mild (moderate temperature, 50 °C or less), direct and operationally simple formation of medicinally relevant C–C bonds while reacting in a complementary fashion to other innate C–H functionalization methods2,3,4,5,6 (Minisci, borono-Minisci, electrophilic aromatic substitution, transition-metal-mediated C–H insertion and C–H deprotonation). We prepared a toolkit of these reagents and studied their reactivity across a wide range of heterocycles (natural products, drugs and building blocks) without recourse to protecting-group chemistry. The reagents can even be used in tandem fashion in a single pot in the presence of water and air.

  研究表明，亚磺酸锌盐可用于将烷基自由基转移到杂环上，从而在与其他固有的碳氢官能化方法互补反应的同时，温和、直接且操作简便地形成具有药物相关性的碳-碳键。含氮杂环在药物中广泛存在，过渡金属介导的交叉偶联反应的一系列进展简化了它们的合成。然而，不依赖预官能化起始材料的实用且选择性的碳氢官能化方法是一个发展不足的领域。在这里，作者报道亚磺酸锌盐可用于将烷基自由基转移到杂环上，从而在与其他固有的碳氢官能化方法正交反应的同时，温和、直接且操作简便地形成具有药物相关性的碳-碳键。含氮杂环化合物对人类健康产生了深远影响，因为这些化学基元存在于大量用于对抗广泛疾病和病理生理条件的药物中。过渡金属介导的交叉偶联的进展简化了这些分子的合成；然而，不依赖预官能化起始材料的具有药物重要性的杂环的碳氢官能化是一个发展不足的领域。不幸的是，杂环的天生特性使其在生物应用中如此受欢迎，例如水溶性和作为配体的能力，这使得它们成为直接化学官能化的具有挑战性的底物。在这里，我们报道亚磺酸锌盐可用于将烷基自由基转移到杂环上，从而在与其他固有的碳氢官能化方法互补反应的同时，温和（中温，50°C或更低）、直接且操作简便地形成具有药物相关性的碳-碳键。我们准备了一套这些试剂，并在不借助于保护基化学的情况下，研究了它们在广泛的杂环（天然产物、药物和构建块）中的反应性。这些试剂甚至可以在有水和空气的情况下单锅串联使用。
• Difluoromethylation Of Unsaturated Compounds
  申请人：The Scripps Research Institute

  公开号：US20150011760A1

  公开（公告）日：2015-01-08

  A reagent for carrying out a difluoromethylation reaction of unsaturated compounds and ring-nitrogen-containing aromatic compounds, a zinc difluoro-methanesulfinate, as well as a method for making the reagent and a method for its use are disclosed.

  本发明公开了一种用于进行不饱和化合物和环氮含芳香化合物的二氟甲基化反应的试剂，即锌二氟甲基磺酰亚胺，以及制备该试剂的方法和使用该试剂的方法。
• DIFLUOROMETHYLATION OF UNSATURATED COMPOUNDS
  申请人：The Scripps Research Institute

  公开号：EP2785723A1

  公开（公告）日：2014-10-08