ethyl 3-phenyl-3-(o-tolylamino)propanoate | 1383986-95-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: ethyl 3-phenyl-3-(o-tolylamino)propanoate
• 英文别名: (S)-ethyl 3-(2-methylphenylamino)-3-phenylpropanoate；ethyl (3S)-3-(2-methylanilino)-3-phenylpropanoate
• CAS: 1383986-95-5
• 化学式: C₁₈H₂₁NO₂
• 分子量: 283.37
• InChiKey: SSRYKWMNDVDXJK-KRWDZBQOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  21
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  β-(2-metilfenilamino)cinamato de etilo 在 dicobalt octacarbonyl 、 一氧化碳 、 氢气 、 (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl 、 三苯基膦 作用下， 以 四氢呋喃 为溶剂， 120.0 ℃ 、3.1 MPa 条件下， 反应 36.0h， 以19%的产率得到
  参考文献：
  名称：

  Cobalt-catalyzed hydrogenation of β-enamino esters using an internal mixture of bidentate and monodentate ligands

  摘要：

  Different beta-amino esters have been obtained in good yields by means of octacarbonyldicobalt-catalyzed hydrogenation of beta-enamine esters in the presence of mixture of a bidentate phosphine chiral (R-BINAP) and a monodentate phosphine achiral (PPh3). Likewise, a non-symmetric Co/BINAP/PPh3 complex was isolated. This new compound was used in the hydrogenation reaction under different conditions and the results suggest that this heterocombination could be responsible for improving enantiomeric excess in the reduction products. (C) 2014 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2014.06.028

文献信息

• Asymmetric transfer hydrogenations of β-N-substituted enamino esters with ammonia borane
  作者：Weiwei Zhao、Xiangqing Feng、Jing Yang、Haifeng Du

  DOI：10.1016/j.tetlet.2019.03.060

  日期：2019.4

  β-enamino esters is one of the most efficient approaches for their synthesis. Ammonia borane with low molecular weight, high hydrogen capacity, and good stability, is an ideal hydrogen source for the transfer hydrogenation. However, only a few successful examples have been reported for the asymmetric reduction with ammonia borane. In this work, an asymmetric metal-free transfer hydrogenation of β-N-substituted

  旋光性β-氨基酸及其衍生物是合成和药物化学中非常有用的组成部分。β-烯氨基酯的催化不对称还原是最有效的合成方法之一。低分子量，高氢气容量和良好稳定性的氨硼烷是转移加氢的理想氢源。但是，只有少数成功的例子报道了用氨硼烷进行不对称还原。在这项工作中，β-不对称无金属转移氢化Ñ取代与ammoinia硼烷烯酯成功通过使用路易斯受挫对桥墩的硼烷和（实现小号） -叔-丁基亚磺酰胺作为手性催化剂。以51–90％的产率获得了多种β-氨基酸衍生物，ee高达91％。
• Synthesis of chiral β-amino acid derivatives by asymmetric hydrosilylation with an imidazole derived organocatalyst
  作者：Simon Jones、Xianfu Li

  DOI：10.1016/j.tet.2012.04.084

  日期：2012.7

  hydrosilylation of a number of N-aryl and alkyl β-substituted enamino esters proceeds in generally good yield and enantioselectivity. Crucial to obtaining high yield and selectivity was the addition of benzoic acid as an additive and under these conditions, both N-alkyl and N-aryl substituents were well tolerated. β-Aryl and alkyl substituents were evaluated and a model proposed to account for the experimental

  许多N-芳基和烷基β-取代的烯氨基酯的有机催化的不对称氢化硅烷化通常以良好的收率和对映选择性进行。获得高产率和选择性的关键是加入苯甲酸作为添加剂，在这些条件下，N-烷基和N-芳基取代基均具有良好的耐受性。评估了β-芳基和烷基取代基，并提出了一个模型，以基于烯胺互变异构和反应性酮亚胺中间体的构象偏爱来解释实验结果。