2,2,2-trichloroethyl N-phenethylcarbamate | 217088-68-1

• 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: 2,2,2-trichloroethyl N-phenethylcarbamate
• 英文别名: 2,2,2-trichloroethyl phenethylcarbamate；2,2,2-trichloroethyl N-(2-phenylethyl)carbamate
• CAS: 217088-68-1
• 化学式: C₁₁H₁₂Cl₃NO₂
• 分子量: 296.581
• InChiKey: CIGPNFGTJSLISV-UHFFFAOYSA-N

物化性质

• 熔点：
  58-59 °C(Solv: ethyl acetate (141-78-6); hexane (110-54-3))
• 沸点：
  385.9±42.0 °C(Predicted)
• 密度：
  1.358±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2,2,2-trichloroethyl N-phenethylcarbamate 在 三氯硅烷 、 三乙胺 作用下， 以 苯 为溶剂， 反应 4.0h， 生成 2-苯乙基异氰酸酯
  参考文献：
  名称：

  Multilevel Selectivity in the Mild and High-Yielding Chlorosilane-Induced Cleavage of Carbamates to Isocyanates

  摘要：

  The silane-induced cleavage of a series of N-p-tolylcarbamates and N-phenethylcarbamates to isocyanates has been investigated as a function of chlorosilane, carbamate substituent, and reaction conditions. Reaction yields were determined from the isolated ureas, which were formed by trapping the Corresponding isocyanates with isobutylamine. Under room-temperature conditions, multilevel selectivity in carbamate activation has been demonstrated. This selectivity together with the generality of the methodology enhances the utility of carbamates as synthetic intermediates and protecting groups. To demonstrate the effectiveness of this selectivity, a series of biscarbamates were selectively monoactivated to isocyanates in excellent yields.

  DOI：

  10.1021/jo981816+
• 作为产物：
  描述：

  2,2,2-trichloroethoxycarbonyl azide 、 3-苯基丙酸 在 4-二甲氨基吡啶 、 copper diacetate 作用下， 以 乙腈 为溶剂， 反应 3.0h， 以99%的产率得到2,2,2-trichloroethyl N-phenethylcarbamate
  参考文献：
  名称：

  催化脱羧CN生成以生成烷基，烯基和芳基胺

  摘要：

  过渡金属催化的sp 2 C-N键形成是合成芳基胺的可靠方法。偶尔已经报道了催化sp 3 C-N的形成反应，并且相对未开发能够同时实现sp 2和sp 3 C-N形成的方法。在这里，我们通过催化脱羧CN的形成方法来解决这一挑战，该方法通过级联羧酸活化，酰基叠氮化物形成，Curtius重排和亲核加成反应进行。该反应使用天然丰富的有机羧酸作为碳源，容易制备的叠氮基甲酸作为氮源，以及4-二甲基氨基吡啶（DMAP）和Cu（OAc）2作为负载量低至0.1 mol％的催化剂，以气态N 2和CO 2为唯一副产物，可以高收率提供受保护的烷基，烯基和芳基胺。实例展示了天然产物和药物分子的后期功能化，有用的α-手性烷基胺的立体定向合成以及不同尿素和伯胺的快速构建。

  DOI：

  10.1002/anie.202010974

文献信息

• Synthesis of Indolines and Tetrahydroisoquinolines from Arylethylamines by Pd^II-Catalyzed CH Activation Reactions
  作者：Jiao-Jie Li、Tian-Sheng Mei、Jin-Quan Yu

  DOI：10.1002/anie.200802187

  日期：2008.8.11
• Catalytic Decarboxylative C−N Formation to Generate Alkyl, Alkenyl, and Aryl Amines
  作者：Yipin Zhang、Xia Ge、Hongjian Lu、Guigen Li

  DOI：10.1002/anie.202010974

  日期：2021.1.25

  bond formation is a reliable method for the synthesis of aryl amines. Catalytic sp3 C−N formation reactions have been reported occasionally, and methods that can realize both sp2 and sp3 C−N formation are relatively unexplored. Herein, we address this challenge with a method of catalytic decarboxylative C−N formation that proceeds through a cascade carboxylic acid activation, acyl azide formation, Curtius

  过渡金属催化的sp 2 C-N键形成是合成芳基胺的可靠方法。偶尔已经报道了催化sp 3 C-N的形成反应，并且相对未开发能够同时实现sp 2和sp 3 C-N形成的方法。在这里，我们通过催化脱羧CN的形成方法来解决这一挑战，该方法通过级联羧酸活化，酰基叠氮化物形成，Curtius重排和亲核加成反应进行。该反应使用天然丰富的有机羧酸作为碳源，容易制备的叠氮基甲酸作为氮源，以及4-二甲基氨基吡啶（DMAP）和Cu（OAc）2作为负载量低至0.1 mol％的催化剂，以气态N 2和CO 2为唯一副产物，可以高收率提供受保护的烷基，烯基和芳基胺。实例展示了天然产物和药物分子的后期功能化，有用的α-手性烷基胺的立体定向合成以及不同尿素和伯胺的快速构建。
• Multilevel Selectivity in the Mild and High-Yielding Chlorosilane-Induced Cleavage of Carbamates to Isocyanates
  作者：Pek Y. Chong、Slawomir Z. Janicki、Peter A. Petillo

  DOI：10.1021/jo981816+

  日期：1998.11.1

  The silane-induced cleavage of a series of N-p-tolylcarbamates and N-phenethylcarbamates to isocyanates has been investigated as a function of chlorosilane, carbamate substituent, and reaction conditions. Reaction yields were determined from the isolated ureas, which were formed by trapping the Corresponding isocyanates with isobutylamine. Under room-temperature conditions, multilevel selectivity in carbamate activation has been demonstrated. This selectivity together with the generality of the methodology enhances the utility of carbamates as synthetic intermediates and protecting groups. To demonstrate the effectiveness of this selectivity, a series of biscarbamates were selectively monoactivated to isocyanates in excellent yields.