4-(1,3,2-dioxaborolan-2-yl)benzonitrile

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-(1,3,2-dioxaborolan-2-yl)benzonitrile
• 英文别名: 2-(4-Cyanophenyl)-1,3,2-dioxaborolane；4-cyanophenylboronic acid ethylene glycol ester
• 化学式: C₉H₈BNO₂
• 分子量: 172.979
• InChiKey: VHDDPRSTDANHBU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.3
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  42.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-(1,3,2-dioxaborolan-2-yl)benzonitrile 、 5-已烯-2-酮 在 氧气 、 palladium diacetate 、 copper(II) bis(trifluoromethanesulfonate) 作用下， 以 N,N-二甲基乙酰胺 为溶剂， 反应 48.0h， 以71%的产率得到(E)-4-(5-oxohex-1-en-1-yl)benzonitrile
  参考文献：
  名称：

  Covalent Organic Framework as a Heterogeneous Ligand for the Regioselective Oxidative Heck Reaction

  摘要：

  A simple imine-based covalent organic framework (COF) as heterogeneous ligand for Pd-II-promoted Hcck reaction is reported. Good regioselectivity for a wide range of electronically unbiased olefins is obtained (linear/branched >100:1 in most cases). Related tests and density functional theory calculations are used to explore the reason underlying the high selectivity. This research opens a route for COF as an intriguing platform to control regioselectivity catalysis.

  DOI：

  10.1021/acs.orglett.0c00061

文献信息

• Thiophene-Alkyne-Based CMPs as Highly Selective Regulators for Oxidative Heck Reaction
  作者：Ren-Hao Li、Zong-Cang Ding、Cun-Yao Li、Jun-Jia Chen、Yun-Bing Zhou、Xiao-Ming An、Yun-Jie Ding、Zhuang-Ping Zhan

  DOI：10.1021/acs.orglett.7b01858

  日期：2017.9.1

  as ligands for PdII-promoted organic reactions are reported for the first time. These ligands were utilized as catalytic sites and integrated into the skeleton of conjugated microporous polymers. By employing these CMP materials as selective regulators, oxidative Heck reactions between arylboronic esters and electronically unbiased alkenes provide highly selective linear products.

  首次报道了含有相邻的C≡C基团作为Pd II促进的有机反应的配体的噻吩。这些配体被用作催化位点并整合到共轭微孔聚合物的骨架中。通过将这些CMP材料用作选择性调节剂，芳基硼酸酯与电子无偏烯烃之间的氧化Heck反应可提供高度选择性的线性产物。
• Conjugated Microporous Polymer as Heterogeneous Ligand for Highly Selective Oxidative Heck Reaction
  作者：Yun-Bing Zhou、Yu-Qing Wang、Li-Chao Ning、Zong-Cang Ding、Wen-Long Wang、Cheng-Ke Ding、Ren-Hao Li、Jun-Jia Chen、Xin Lu、Yun-Jie Ding、Zhuang-Ping Zhan

  DOI：10.1021/jacs.7b00643

  日期：2017.3.22

  catalytic ligand for the PdII-catalyzed oxidative Heck reaction with high linear selectivity. The linear selectivity of CMP-1 is about 30 times higher than that of bipyridine-based monomer ligand. This work opens a new front of using CMP as an intriguing platform for developing highly efficient catalysts in controlling the regioselectivity in organic reactions.

  设计并合成了一系列含有 C≡C 键的吡啶型配体用于选择性氧化 Heck 反应。这些配体被用作功能单元并整合到共轭微孔聚合物的骨架中。6,6'-二碘-2,2'-联吡啶和1,3,5-三乙炔苯通过Sonogashira交叉偶联策略缩聚得到CMP-1材料。所得的 CMP-1 用作 PdII 催化的氧化 Heck 反应的多相催化配体，具有高线性选择性。CMP-1 的线性选择性比基于联吡啶的单体配体高约 30 倍。这项工作开辟了使用 CMP 作为开发高效催化剂控制有机反应区域选择性的有趣平台的新前沿。
• Catalytic Cross-Coupling Reaction of Esters with Organoboron Compounds and Decarbonylative Reduction of Esters with HCOONH₄:  A New Route to Acyl Transition Metal Complexes through the Cleavage of Acyl−Oxygen Bonds in Esters
  作者：Hiroto Tatamidani、Kazuhiko Yokota、Fumitoshi Kakiuchi、Naoto Chatani

  DOI：10.1021/jo0492719

  日期：2004.8.1

  ketones. Acyl−alkyl coupling to dialkyl ketones is also achieved by the use of 9-alkyl-9-BBN in place of boronates. The Ru3(CO)12-catalyzed decarbonylative reduction of esters with ammonium formate (HCOONH4) leading to hydrocarbons is also described. No expected aldehydes are produced, and controlled experiments indicate that aldehydes are not intermediate for the transformation. A hydrosilane can also be

  描述了Ru 3（CO）12催化的酯与有机硼化合物的交叉偶联反应，生成酮。在反应条件下可以耐受多种官能团。芳族硼酸盐起偶联伙伴的作用，得到芳基酮。通过使用9-烷基-9-BBN代替硼酸盐也可以实现偶联至二烷基酮的酰基-烷基。在Ru 3（CO）12 -催化decarbonylative还原甲酸铵酯（HCOONH 4也描述了导致碳氢化合物的）。没有产生预期的醛，并且受控实验表明醛不是该转化的中间体。氢化硅烷也可以代替HCOONH 4用作还原剂。两种官能团均兼容。这两个催化反应的关键步骤都是酯中的酯基碳氧键的导向基团促进裂解，从而导致酰基过渡金属烷氧基络合物的生成。
• Palladium-Catalyzed Hydroarylation of 1,3-Dienes with Boronic Esters via Reductive Formation of π-Allyl Palladium Intermediates under Oxidative Conditions
  作者：Longyan Liao、Matthew S. Sigman

  DOI：10.1021/ja105010t

  日期：2010.8.4

  A palladium-catalyzed reductive cross-coupling of 1,3-dienes with boronic esters in which a pi-allyl Pd species is generated directly from a 1,3-diene via a Pd-catalyzed aerobic alcohol oxidation is reported. Both the scope of the process and the origin of a highly selective 1,2-addition are discussed.

  报道了钯催化的 1,3-二烯与硼酸酯的还原交叉偶联，其中 pi-烯丙基 Pd 物种通过 Pd 催化的有氧醇氧化直接从 1,3-二烯生成。讨论了该过程的范围和高选择性 1,2-加成的起源。
• Chlorodifluoromethane-triggered formation of difluoromethylated arenes catalysed by palladium
  作者：Zhang Feng、Qiao-Qiao Min、Xia-Ping Fu、Lun An、Xingang Zhang

  DOI：10.1038/nchem.2746

  日期：2017.9

  represents the ideal and most straightforward difluoromethylating reagent, but introduction of the difluoromethyl group (CF2H) from ClCF2H into aromatics has not been reported. Here, we describe a direct palladium-catalysed difluoromethylation method for coupling ClCF2H with arylboronic acids and esters to generate difluoromethylated arenes with high efficiency. The reaction exhibits a remarkably broad substrate

  二氟甲基化的芳族化合物在制药，农用化学品和材料中的重要性日益增加。氯二氟甲烷（ClCF 2 H）是一种廉价，丰富且广泛使用的工业原料，是理想且最直接的二氟甲基化试剂，但尚未见到将ClCF 2 H中的二氟甲基（CF 2 H）引入芳族化合物的报道。在这里，我们描述了偶联ClCF 2的直接钯催化的二氟甲基化方法H与芳基硼酸和酯生成高效二氟甲基化的芳烃。该反应表现出非常广泛的底物范围，包括杂芳基硼酸，并且被用于一系列药物和生物活性化合物的二氟甲基化。初步的机理研究表明，该反应涉及钯二氟卡宾中间体。尽管已经制备了许多金属-二氟卡宾配合物，但涉及金属-二氟卡宾配合物的二氟甲基化或二氟甲基化化合物的催化合成并未受到太大关注。因此，这一新反应也为理解金属-二氟卡宾络合物催化的反应打开了大门。