9-benzyl-6,8-diphenyl-9H-purine

• 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: 9-benzyl-6,8-diphenyl-9H-purine
• 英文别名: 9-benzyl-6,8-diphenylpurine
• 化学式: C₂₄H₁₈N₄
• 分子量: 362.434
• InChiKey: ZLYKOEJCSKSVEH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  28
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.04
• 拓扑面积：
  43.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  9-benzyl-6-phenyl-9H-purine 在 四(三苯基膦)钯 、 copper(I) 2-hydroxy-3-methylbenzoate 、 lithium tert-butoxide 作用下， 以 四氢呋喃 、 1,4-二氧六环 为溶剂， 反应 130.0h， 生成 9-benzyl-6,8-diphenyl-9H-purine
  参考文献：
  名称：

  嘌呤和脱氮嘌呤的直接C–H亚磺酰化†

  摘要：

  已经开发了一种用芳基或烷基二硫化物进行铜催化的嘌呤，7-脱氮-和9-脱氮嘌呤的CH 3 H-亚磺酰基化的通用方法。在嘌呤中，反应在位置8发生，在7-脱氮嘌呤在7位发生，在9-脱氮嘌呤在9位发生，产生嘌呤或脱氮嘌呤碱的新的有趣的芳基硫烷基衍生物。所得的8-芳基硫烷基嘌呤与芳基斯坦酮或硼酸进行李贝克-Srogl偶联，而（芳基硫烷基）脱氮嘌呤在这些条件下不具有反应性。

  DOI：

  10.1039/c3ob40881g

文献信息

• Nickel-catalyzed sp2 C–H bonds arylation of N-aromatic heterocycles with Grignard reagents at room temperature
  作者：Gui-Rong Qu、Peng-Yang Xin、Hong-Ying Niu、Dong-Chao Wang、Rui-Fang Ding、Hai-Ming Guo

  DOI：10.1039/c1cc14558d

  日期：——

  A novel protocol for nickel-catalyzed direct sp(2) C-H bond arylation of purines has been developed. This new reaction proceeded efficiently at room temperature using Grignard reagent as the coupling partner within 5 hours in good to high yields. This approach provides a new access to a variety of C8-arylpurines which are potentially of great importance in medicinal chemistry.

  已开发了镍催化嘌呤的直接sp（2）CH键芳基化的新协议。使用格氏试剂作为偶联伴侣，该新反应在室温下有效地进行了5个小时，反应良好，收率很高。这种方法提供了对各种C8-芳基嘌呤的新途径，这些C8-芳基嘌呤可能在药物化学中具有重要的意义。
• Direct C−H Arylation of Purines:  Development of Methodology and Its Use in Regioselective Synthesis of 2,6,8-Trisubstituted Purines
  作者：Igor Čerňa、Radek Pohl、Blanka Klepetářová、Michal Hocek

  DOI：10.1021/ol062324j

  日期：2006.11.9

  [GRAPHICS]Direct C-H arylation of purines to position 8 by diverse aryl iodides was achieved with Pd catalysis in the presence of CuI and Cs2CO3. The methodology is general and efficient and was applied in the consecutive regioselective synthesis of 2,6,8-trisubstituted purines bearing three different C-substituents in combination with two cross-coupling reactions.
• Regiochemistry in the Pd-Mediated Coupling between 6,8-Dihalopurines and Organometallic Reagents.
  作者：Jens M. J. Nolsøe、Lise-Lotte Gundersen、Frode Rise、Uffe Anthoni、Per H. Nielsen、Carsten Christophersen、Hong-Gen Wang、Xin-Kan Yao、Hong-Gen Wang、J. -P. Tuchagues、Mattias Ögren

  DOI：10.3891/acta.chem.scand.53-0366

  日期：——

  The regiochemistry in the Pd-mediated coupling between 6,8-dihalopurines and organometallic reagents has been examined. When 6,8-dichloropurines were reacted. highly selective coupling in the purine 6-position was obtained and the regiochemical outcome was completely reversed when a better leaving group (Br or I) was introduced at C-8.