3,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carbonitrile | 916454-57-4

• 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: 3,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carbonitrile
• CAS: 916454-57-4
• 化学式: C₁₇H₂₅B₂NO₄S
• 分子量: 361.078
• InChiKey: DURDSXLEHINWJR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.22
• 重原子数：
  25
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  89
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carbonitrile 在 甲醇 、 (1,5-cyclooctadiene)(methoxy)iridium(I) dimer 作用下， 以 二氯甲烷 为溶剂， 反应 5.5h， 以75%的产率得到3-(4,4,5,5-四甲基-1,3,2-二氧杂硼杂环戊烷-2-基)噻吩-2-甲腈
  参考文献：
  名称：

  Harnessing C–H Borylation/Deborylation for Selective Deuteration, Synthesis of Boronate Esters, and Late Stage Functionalization

  摘要：

  Ir-catalyzed deborylation can be used to selectively deuterate aromatic and heteroaromatic substrates. Combined with the selectivities of Ir-catalyzed C-H borylations, uniquely labeled compounds can be prepared. In addition, diborylation/deborylation reactions provide monoborylated regioisomers that complement those prepared by C-H borylation. Comparisons between Ir-catalyzed deborylations and Pd-catalyzed deborylations of diborylated indoles described by Movassaghi are made. The Ir-catalyzed process is more effective for deborylating aromatics and is generally more effective in the monodeborylation of diborylated thiophenes. These processes can be applied to complex molecules such as dopidogrel.

  DOI：

  10.1021/acs.joc.5b01588
• 作为产物：
  描述：

  2-氰基噻吩 、 频那醇硼烷 在 (1,5-cyclooctadiene)(methoxy)iridium(I) dimer 、 4,4'-二叔丁基-2,2'-二吡啶 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 以88%的产率得到3,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carbonitrile
  参考文献：
  名称：

  Process for producing cyano substituted arene boranes and compounds

  摘要：

  描述了一种生产氰基取代芳基硼烷的方法。这些化合物是制备药用化合物的有用中间体，使用氰基作为反应物。

  公开号：

  US20060281939A1

文献信息

• Microwave-Accelerated Iridium-Catalyzed Borylation of Aromatic C−H Bonds
  作者：Peter Harrisson、James Morris、Todd B. Marder、Patrick G. Steel

  DOI：10.1021/ol901306m

  日期：2009.8.20

  accelerates the Ir-catalyzed C−H borylation of aromatic substrates when compared with reactions carried out at the same temperature under standard heating conditions. Application to a one-pot single solvent process for tandem C−H borylation/Suzuki−Miyaura cross-coupling sequences using microwave-accelerated reactions gives fast and efficient access to a wide range of biaryl and heterobiaryl compounds.

  与在标准加热条件下在相同温度下进行的反应相比，微波加热可加速芳族底物的Ir催化CH硼化。通过微波加速反应应用于串联C–H硼酸酯化/ Suzuki-Miyaura交叉偶联序列的一锅单一溶剂工艺，可以快速，有效地获得各种联芳基和杂联芳基化合物。
• Process for producing cyano substituted arene boranes and compounds
  申请人：Smith R. Milton

  公开号：US20060281939A1

  公开（公告）日：2006-12-14

  A process for producing cyano substituted arene boranes is described. The compounds are useful intermediates to pharmaceutical compounds using the cyano group as a reactant.

  描述了一种生产氰基取代芳基硼烷的方法。这些化合物是制备药用化合物的有用中间体，使用氰基作为反应物。
• Harnessing C–H Borylation/Deborylation for Selective Deuteration, Synthesis of Boronate Esters, and Late Stage Functionalization
  作者：Venkata A Kallepalli、Kristin A. Gore、Feng Shi、Luis Sanchez、Ghayoor A. Chotana、Susanne L. Miller、Robert E. Maleczka、Milton R. Smith

  DOI：10.1021/acs.joc.5b01588

  日期：2015.8.21

  Ir-catalyzed deborylation can be used to selectively deuterate aromatic and heteroaromatic substrates. Combined with the selectivities of Ir-catalyzed C-H borylations, uniquely labeled compounds can be prepared. In addition, diborylation/deborylation reactions provide monoborylated regioisomers that complement those prepared by C-H borylation. Comparisons between Ir-catalyzed deborylations and Pd-catalyzed deborylations of diborylated indoles described by Movassaghi are made. The Ir-catalyzed process is more effective for deborylating aromatics and is generally more effective in the monodeborylation of diborylated thiophenes. These processes can be applied to complex molecules such as dopidogrel.