2-(benzofuran-2-yl)-4,6-dimethoxypyrimidine | 1251914-08-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 2-(benzofuran-2-yl)-4,6-dimethoxypyrimidine
• 英文别名: 2-(benzofuran-2-yl)-4,6-dimethoxyprymidine；2-(1-Benzofuran-2-yl)-4,6-dimethoxypyrimidine
• CAS: 1251914-08-5
• 化学式: C₁₄H₁₂N₂O₃
• 分子量: 256.261
• InChiKey: BQTIDXLJBKHIQF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  57.4
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  苯并呋喃-2-硼酸 、 2-氯-4,6-二甲氧基嘧啶 在 [(η³-1-^tBu-indenyl)Pd(1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene)(Cl)] 、 potassium carbonate 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 3.0h， 生成 2-(benzofuran-2-yl)-4,6-dimethoxypyrimidine
  参考文献：
  名称：

  用于 Suzuki-Miyaura 反应的烯丙基钯预催化剂的性能差异

  摘要：

  钯 (II) 预催化剂被广泛用于促进交叉偶联反应，因为它们在工作台上稳定且具有高活性。因此，诸如 Buchwald 的钯环、Organ 的 PEPPSI 物种、Nolan 的基于烯丙基的配合物和耶鲁的 1-叔丁基茚基的配合物等预催化剂都可以在市场上买到。比较不同类别的预催化剂的性能具有挑战性，因为它们通常在不同的条件下使用，部分原因是它们通过不同的途径还原为活性物质。然而，在特定类别的预催化剂中，比较性能更容易，因为它们通过相似的途径激活并在相同的条件下使用。在这里，我们评估了不同烯丙基预催化剂的活性，3 -烯丙基）的PdCl（L），（η 3 -crotyl）的PdCl（L），（η 3 -cinnamyl）的PdCl（L），和（η 3 -1-叔-butylindenyl）的PdCl（L）在铃木-宫浦反应。具体来说，我们评估了预催化剂的性能，因为辅助配体（NHC 或膦）、反应条件和底物各不相

  DOI：

  10.1002/adsc.202000987

文献信息

• [EN] NOVEL PRECATALYST SCAFFOLDS FOR CROSS-COUPLING REACTIONS, AND METHODS OF MAKING AND USING SAME<br/>[FR] NOUVEAUX SUPPORTS DE PRÉ-CATALYSEURS POUR RÉACTIONS À COUPLAGE MUTUEL, ET LEURS PROCÉDÉS DE FABRICATION ET D'UTILISATION
  申请人：UNIV YALE

  公开号：WO2016057600A1

  公开（公告）日：2016-04-14

  The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.

  本发明提供了新型过渡金属前催化剂，可用于制备活性偶联催化剂。在某些实施例中，本发明的前催化剂具有空气稳定性和湿度稳定性。本发明还提供了制备和使用本发明的前催化剂的方法。
• [EN] CROSS-COUPLING REACTION CATALYSTS, AND METHODS OF MAKING AND USING SAME<br/>[FR] CATALYSEURS DE RÉACTION À COUPLAGE CROISÉ, LEURS PROCÉDÉS DE PRODUCTION ET D'UTILISATION
  申请人：UNIV YALE

  公开号：WO2018183328A1

  公开（公告）日：2018-10-04

  The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.

  本发明提供了新型的过渡金属配体前催化剂，可用于制备活性偶联催化剂。在某些实施例中，本发明的前催化剂具有空气稳定性和耐潮湿性。本发明还提供了制备和使用本发明前催化剂的方法。
• Precatalyst scaffolds for cross-coupling reactions, and methods of making and using same
  申请人：YALE UNIVERSITY

  公开号：US10894802B2

  公开（公告）日：2021-01-19

  The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.

  本发明提供了可用于制备活性偶联催化剂的新型过渡金属前催化剂。在某些实施方案中，本发明的前催化剂具有空气稳定性和湿度稳定性。本发明进一步提供了制造和使用本发明前催化剂的方法。
• A New Palladium Precatalyst Allows for the Fast Suzuki−Miyaura Coupling Reactions of Unstable Polyfluorophenyl and 2-Heteroaryl Boronic Acids
  作者：Tom Kinzel、Yong Zhang、Stephen L. Buchwald

  DOI：10.1021/ja1073799

  日期：2010.10.13

  Boronic acids which quickly deboronate under basic conditions, such as polyfluorophenylboronic acid and five-membered 2-heteroaromatic boronic acids, are especially challenging coupling partners for Suzuki-Miyaura reactions. Nevertheless, being able to use these substrates is highly desirable for a number of applications. Having found that monodentate biarylphosphine ligands can promote these coupling processes, we developed a precatalyst that forms the catalytically active species under conditions where boronic acid decomposition is slow. With this precatalyst, Suzuki-Miyaura reactions of a wide range of (hetero)aryl chlorides, bromides, and triflates with polyfluorophenyl, 2-furan, 2-thiophene, and 2-pyrroleboronic acids and their analogues proceed at room temperature or 40 degrees C in short reaction times to give the desired products in excellent yields.
• Design of a Versatile and Improved Precatalyst Scaffold for Palladium-Catalyzed Cross-Coupling: (η³-1-^tBu-indenyl)₂(μ-Cl)₂Pd₂
  作者：Patrick R. Melvin、Ainara Nova、David Balcells、Wei Dai、Nilay Hazari、Damian P. Hruszkewycz、Hemali P. Shah、Matthew T. Tudge

  DOI：10.1021/acscatal.5b00878

  日期：2015.6.5

  We describe the development of (eta(3)-1-Bu-t-indenyl)(2)(mu-Cl)(2)Pd-2, a versatile precatalyst scaffold for Pd-catalyzed cross-coupling. Our new system is more active than commercially available (eta(3)-cinnamyl)(2)(mu-Cl)(2)Pd-2 and is compatible with a range of NHC and phosphine ligands. Precatalysts of the type (eta(3)-1-Bu-t-indenyl)Pd(Cl)(L) can either be isolated through the reaction of (eta(3)-1-Bu-t-indenyl)(2)(mu-Cl)(2)Pd-2 with the appropriate ligand or generated in situ, which offers advantages for ligand screening. We show that the (eta(3)-1-Bu-t-indenyl)(2)(mu-Cl)(2)Pd-2 scaffold generates highly active systems for a number of challenging cross-coupling reactions. The reason for the improved catalytic activity of systems generated from the (eta(3)-1-Bu-t-indenyl)(2)(mu-Cl)(2)Pd-2 scaffold compared to (eta(3)-cinnamyl)(2)(mu-Cl)(2)Pd-2 is that inactive Pd-I dimers are not formed during catalysis.