N-(4-methylbenzyl)-3-phenyl-2-pyridinamine | 1416556-03-0

• 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: N-(4-methylbenzyl)-3-phenyl-2-pyridinamine
• 英文别名: N-(4-methylbenzyl)-3-phenylpyridin-2-amine
• CAS: 1416556-03-0
• 化学式: C₁₉H₁₈N₂
• 分子量: 274.365
• InChiKey: PODWJLBTXARCEU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.67
• 重原子数：
  21.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  24.92
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  N-(4-methylbenzyl)-3-phenyl-2-pyridinamine 、 甲苯 在 nickel(II) triflate 、 七氟-2-碘代丙烷 、 碳酸氢钠 、 三苯基膦 作用下， 以12%的产率得到N-(4-methylbenzyl)-N-benzyl-3-phenyl-2-pyridinamine
  参考文献：
  名称：

  甲苯及其衍生物作为仲胺的原子高效苄基化剂

  摘要：

  甲苯作为常见 N-苄基化试剂（如苄基溴）的替代品，可以成为一种原子效率高的替代试剂。在镍催化和温和的氧化条件下，可以有效地活化甲苯并将其直接用于不同2-氨基吡啶的苄基化反应。转化不仅限于简单的甲苯，而且取代的衍生物也能以良好的产率得到所需的产物。给出了吡啶部分的有效裂解。

  DOI：

  10.1055/s-0037-1610342
• 作为产物：
  描述：

  4-甲基苄胺 在 palladium diacetate 、 potassium carbonate 、 R-(+)-1,1'-联萘-2,2'-双二苯膦 、 2-二环己基磷-2,4,6-三异丙基联苯 作用下， 以 甲苯 为溶剂， 反应 32.0h， 生成 N-(4-methylbenzyl)-3-phenyl-2-pyridinamine
  参考文献：
  名称：

  Mechanistic Investigations and Substrate Scope Evaluation of Ruthenium-Catalyzed Direct sp³ Arylation of Benzylic Positions Directed by 3-Substituted Pyridines

  摘要：

  A highly efficient direct arylation process of benzylic amines with arylboronates was developed that employs Ru catalysis. The arylation takes place with greatest efficiency at the benzylic sp(3) carbon. If the distance to the activating aryl ring is increased, arylation is still possible but the yield drops significantly. Efficiency of the CH activation was found to be significantly increased by use of 3-substituted pyridines as directing groups, which can be removed after the transformation in high yield. Calculation of the energy profile of different rotamers of the substrate revealed that presence of a substituent in the 3-position favors a conformation with the CH2 group adopting a position in closer proximity to the directing group and facilitating C-H insertion. This operationally simple reaction can be carried out in argon atmosphere as well as in air and under neutral reaction conditions, displaying a remarkable functional group tolerance. Mechanistic studies were carried out and critically compared to mechanistic reports of related transformations.

  DOI：

  10.1021/jo302547q

文献信息

• Quaternary Ammonium Salts as Alkylating Reagents in C–H Activation Chemistry
  作者：Manuel Spettel、Robert Pollice、Michael Schnürch

  DOI：10.1021/acs.orglett.7b01946

  日期：2017.8.18

  of benzylic amines via C(sp3)–H activation using quaternary ammonium salts as alkyl source is described. The reaction proceeds via in situ formation of an olefin via Hofmann elimination, which is the actual alkylating reagent. This represents an operationally simple method for substituting gaseous and liquid olefins with solid quaternary ammonium salts as alkylating reagents, which is transferable to

  描述了铑（I）通过季铵盐作为烷基源通过C（sp 3）–H活化苄胺的烷基化反应。该反应通过霍夫曼消除原位形成烯烃而进行，霍夫曼消除是实际的烷基化试剂。这代表了一种操作简单的方法，即用固态季铵盐作为烷基化试剂替代气态和液态烯烃，该方法也可以转移到其他C–H活化方案中。