(S)-methyl 3-acetamido-3-(2-methylphenyl)-propanoate

• 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: (S)-methyl 3-acetamido-3-(2-methylphenyl)-propanoate
• 英文别名: methyl (3S)-3-acetamido-3-(2-methylphenyl)propanoate
• 化学式: C₁₃H₁₇NO₃
• 分子量: 235.283
• InChiKey: PMGXVWWKYYSRKO-LBPRGKRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  55.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  3-氧代-3-(2-甲苯基)丙酸甲酯 在 [Rh((S,S,S)-binapine)(3,5-norbornadiene)]SbF₆ ammonium acetate 、 氢气 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 20.0 ℃ 、137.9 kPa 条件下， 反应 24.0h， 生成 (S)-methyl 3-acetamido-3-(2-methylphenyl)-propanoate
  参考文献：
  名称：

  具有立体生成性磷的双磷平配体中心用于通过不对称氢化实际合成β-芳基-β-氨基酸。

  摘要：

  DOI：

  10.1002/anie.200351465

文献信息

• Highly Effective Chiral Ortho-Substituted BINAPO Ligands (<i>o</i>-BINAPO):  Applications in Ru-Catalyzed Asymmetric Hydrogenations of β-Aryl-Substituted β-(Acylamino)acrylates and β-Keto Esters
  作者：Yong-Gui Zhou、Wenjun Tang、Wen-Bo Wang、Wenge Li、Xumu Zhang

  DOI：10.1021/ja020121u

  日期：2002.5.1

  complexes were highly efficient catalysts for asymmetric hydrogenation of β-aryl-substituted β-(acylamino)acrylates and β-aryl-substituted β-keto esters. The Ru-bisphosphinite catalysts can tolerate an E/Z mixture of β-aryl-substituted β-(acylamino)acrylates. These highly enantioselective hydrogenations provide a useful way to prepare β-aryl-substituted β-amino acids and β-hydroxyl acids.

  BINOL合成了一系列手性邻位取代的BINAPO配体（o-BINAPO），它们的Ru配合物是β-芳基取代的β-（酰氨基）丙烯酸酯和β-芳基取代的β的不对称氢化的高效催化剂-酮酯。Ru-双次膦酸盐催化剂可以耐受 β-芳基取代的 β-（酰氨基）丙烯酸酯的 E/Z 混合物。这些高度对映选择性氢化为制备 β-芳基取代的 β-氨基酸和 β-羟基酸提供了一种有用的方法。
• Highly Efficient Iridium-Catalyzed Asymmetric Hydrogenation of Unprotected β-Enamine Esters
  作者：Guohua Hou、Wei Li、Miaofeng Ma、Xiaowei Zhang、Xumu Zhang

  DOI：10.1021/ja105674y

  日期：2010.9.22

  A highly efficient and enantioselective hydrogenation of unprotected β-enamine esters catalyzed by Ir-(S,S)-f-Binaphane complex has been developed. This methodology provides straightforward access to free β-amino acids in high yields with excellent enantioselectivities up to 97% ee and high reactivities (TON > 5000).

  已开发出一种由 Ir-(S,S)-f-Binaphane 络合物催化的未受保护的 β-烯胺酯的高效和对映选择性氢化。这种方法可以直接获得高产率的游离 β-氨基酸，具有高达 97% ee 的出色对映选择性和高反应性 (TON > 5000)。
• Chiral 1-phenylethylamine-derived phosphine-phosphoramidite ligands for highly enantioselective Rh-catalyzed hydrogenation of β-(acylamino)acrylates: significant effect of substituents on 3,3′-positions of binaphthyl moiety
  作者：Xiao-Mao Zhou、Jia-Di Huang、Li-Bin Luo、Chen-Lu Zhang、Xiang-Ping Hu、Zhuo Zheng

  DOI：10.1039/c000268b

  日期：——

  A series of new chiral phosphine-phosphoramidite ligands with a 3,3′-substituted binaphthyl moiety were prepared from 1-phenylethylamine, and successfully applied in the Rh-catalyzed asymmetric hydrogenation of β-(acylamino)acrylates. The research disclosed that the substituents on the 3,3′-positions of binaphthyl moiety significantly influenced the enantioselectivity.

  一系列具有3,3'-取代的新的手性膦-亚磷酰胺配体 联萘基 部分是从 1-苯乙胺，并成功地应用于Rh催化的β-（酰基氨基）丙烯酸酯的不对称加氢反应。研究表明，在3,3'-位上的取代基联萘基 的部分显着影响对映选择性。
• Highly Efficient Synthesis of Chiral β-Amino Acid Derivatives via Asymmetric Hydrogenation
  作者：Wenjun Tang、Xumu Zhang

  DOI：10.1021/ol026935x

  日期：2002.11.1

  The Rh-TangPhos complex is an efficient hydrogenation catalyst for making chiral beta-amino acid derivatives. With the Rh-TangPhos system, high enantioselectivities (up to 99.6%) and turnover numbers have been obtained in the hydrogenation of E/Z isomeric mixtures of both beta-alkyl and beta-aryl beta-(acylamino)acrylates. [reaction: see text]

  Rh-TangPhos配合物是一种高效的氢化催化剂，可用于制备手性β-氨基酸衍生物。使用Rh-TangPhos系统，在β-烷基和β-芳基β-（酰基氨基）丙烯酸酯的E / Z异构体混合物的氢化中，获得了高对映选择性（高达99.6％）和周转率。[反应：看文字]
• Enzymatic preparation of (S)-3-amino-3-(o-tolyl)propanoic acid, a key intermediate for the construction of Cathepsin inhibitors
  作者：Enikő Forró、Gábor Tasnádi、Ferenc Fülöp

  DOI：10.1016/j.molcatb.2013.04.001

  日期：2013.9

  Enantiomerically pure (S)-3-amino-3-(o-tolyl)propanoic acid [(S)-6], identified as the preferred enantiomeric form for the construction of novel beta-amino acid derivatives as inhibitors of Cathepsin, was prepared through both indirect and direct enzymatic strategies. Resolution of hydroxymethylated beta-lactam (+/-)-1 through Burkholderia cepacia lipase PSIM-catalysed R-selective butyrylation (E > 200) was first carried out in t-BuOMe. Treatment of the unreacted (S)-1 with 18% HCl then furnished the desired (S)-6 center dot HCl. Next, Candida antarctica lipase B catalysed the ring cleavage of racemic 4-(o-tolyl)azetidin-2-one [(+/-)-2] with excellent R enantioselectivity (E > 200), either in t-BuOMe with added H2O as nucleophile or in H2O at 60 degrees C. Hydrolysis of the less reactive beta-lactam enantiomer [(S)-2] with 18% HCl afforded (S)-6 center dot HCl. A direct enzymatic route to enantiomeric (S)-6 was finally optimized through the lipase PSIM-catalysed S-enantioselective (E>200) hydrolysis of racemic ethyl 3-amino-3-(o-tolyl)propanoate [(+/-)-3] in t-BuOMe with added H2O at 45 degrees C or in H2O at 3 degrees C. (C) 2013 Elsevier B.V. All rights reserved.