(S)-methyl 1-((R)-1-(4-bromophenyl)-2-nitroethyl)-2-oxocyclopentanecarboxylate | 1223091-52-8

• 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: (S)-methyl 1-((R)-1-(4-bromophenyl)-2-nitroethyl)-2-oxocyclopentanecarboxylate
• 英文别名: methyl-1-(1-(4-bromophenyl)-2-nitroethyl)-2-oxocyclopentanecarboxylate；(1S)-1-[(1R)-1-(4-bromophenyl)-2-nitroethyl]-2-oxo-cyclopentanecarboxylic acid methyl ester；methyl (1S)-1-[(1R)-1-(4-bromophenyl)-2-nitroethyl]-2-oxocyclopentane-1-carboxylate
• CAS: 1223091-52-8
• 化学式: C₁₅H₁₆BrNO₅
• 分子量: 370.2
• InChiKey: OBCZDNOUZTYKHI-DOMZBBRYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  89.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  4-bromo-β-nitrostyrene 、 2-甲氧羰基环戊酮 在 C₃₈H₂₆Co₂N₂O₈*2H₂O 作用下， 反应 5.0h， 以95%的产率得到(S)-methyl 1-((R)-1-(4-bromophenyl)-2-nitroethyl)-2-oxocyclopentanecarboxylate
  参考文献：
  名称：

  双功能同双金属 Co2-Schiff 碱配合物催化 β-酮酯与硝基烯烃的不对称 1,4-加成反应

  摘要：

  描述了 β-酮酯与硝基烯烃的催化不对称 1,4-加成反应。2.5 mol% 的均双金属路易斯酸/Brønsted 碱双功能 Co2-Schiff 碱配合物以优异的产率（高达 99%）、非对映选择性和对映选择性（高达 >30:1 dr 和 98% ee）顺利促进反应。催化剂负载成功地降低到 0.1 mol%。机理研究表明，两个 Co 金属中心的分子内协同功能对于高催化活性和立体选择性很重要。

  DOI：

  10.3390/molecules15010532

文献信息

• Simple primary β-amino alcohols as organocatalysts for the asymmetric Michael addition of β-keto esters to nitroalkenes
  作者：Zubeda Begum、Haruka Sannabe、Chigusa Seki、Yuko Okuyama、Eunsang Kwon、Koji Uwai、Michio Tokiwa、Suguru Tokiwa、Mitsuhiro Takeshita、Hiroto Nakano

  DOI：10.1039/d0ra09041g

  日期：——

  Simple primary β-amino alcohols act as an efficient organocatalysts in the asymmetric Michael addition of β-keto esters with nitroalkenes affording highly pure chiral Michael adducts. Also, both enantiomers of the adducts were obtained, depending on the specific catalyst used and reaction temperature.

  简单的伯 β-氨基醇在 β-酮酯与硝基烯烃的不对称迈克尔加成中充当有效的有机催化剂，提供高纯度的手性迈克尔加合物。此外，根据所使用的具体催化剂和反应温度，获得了加合物的两种对映体。
• Sugar Based γ-Amino Alcohol Organocatalyst for Asymmetric Michael Addition of β-Keto Esters with Nitroolefins
  作者：Hiroto Nakano、Divakar Ganesan、Madhu Chennapuram、Zubeda Begum、Chigusa Seki、Yuko Okuyama、Eunsang Kwon、Koji Uwai、Michio Tokiwa、Suguru Tokiwa、Mitsuhiro Takeshita

  DOI：10.3987/com-19-14172

  日期：——

  Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, E-mail: [e-mail] Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan, E-mail: [e-mail] Research and Analytical Center for Giant Molecules, Graduate School of Sciences

  室兰工业大学工学研究生院可持续与环境工学部，室兰水本町27-1 050-8585，电子邮件：[e-mail] 东北医科大学， 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan, E-mail: [e-mail] 东北大学研究生院大分子研究和分析中心, 6-3 Aoba, Aramaki, Aoba-Ku, Sendai 980-8578, Japan, E-mail: [e-mail] Tokiwakai Group, 62 Numajiri Tsuduri-Chou Uchigo Iwaki 973-8053, Japan, E-mail: hisyo@tokiwa.或.jp
• 2-Azanorbornane-Based Amino Alcohol Organocatalysts for Asymmetric Michael Reaction of β-Keto Esters with Nitroolefins
  作者：Rei Togashi、Madhu Chennapuram、Chigusa Seki、Yuko Okuyama、Eunsang Kwon、Koji Uwai、Michio Tokiwa、Mitsuhiro Takeshita、Hiroto Nakano

  DOI：10.1002/ejoc.201900308

  日期：2019.6.30

  A highly enantioselective Michael addition of β‐keto esters to nitroolefins was carried out using newly designed optically active 2‐azanorbornane‐based amino alcohol organocatalysts to produce the corresponding chiral Michael adducts in good chemical yields (up to 99 %) and stereoselectivities (up to dr = 91:9, up to 91 % ee).

  使用新设计的光学活性的基于2-氮杂降冰片烷的氨基醇有机催化剂，对β-酮酯向硝基烯烃进行了高对映选择性的迈克尔加成反应，从而以良好的化学收率（高达99％）和立体选择性（高达dr = 91：9，最高可达91％ee）。
• Rhodium/Chiral Urea Relay Catalysis Enables an Enantioselective Semipinacol Rearrangement/Michael Addition Cascade
  作者：Dian-Feng Chen、Pei-Yu Wu、Liu-Zhu Gong

  DOI：10.1021/ol4017386

  日期：2013.8.2

  The combined use of rhodium and cinchona-based squaramide has first been introduced for asymmetric relay catalysis, enabling a highly enantioselective semipinacol rearrangement/Michael addition cascade.
• Catalytic Asymmetric 1,4-Additions of β-Keto Esters to Nitroalkenes Promoted by a Bifunctional Homobimetallic Co2-Schiff Base Complex
  作者：Makoto Furutachi、Zhihua Chen、Shigeki Matsunaga、Masakatsu Shibasaki

  DOI：10.3390/molecules15010532

  日期：——

  Catalytic asymmetric 1,4-addition of β-keto esters to nitroalkenes is described. 2.5 mol % of a homobimetallic Lewis acid/Brønsted base bifunctional Co2-Schiff base complex smoothly promoted the reaction in excellent yield (up to 99%), diastereoselectivity, and enantioselectivity (up to >30:1 dr and 98% ee). Catalyst loading was successfully reduced to 0.1 mol %. Mechanistic studies suggested that

  描述了 β-酮酯与硝基烯烃的催化不对称 1,4-加成反应。2.5 mol% 的均双金属路易斯酸/Brønsted 碱双功能 Co2-Schiff 碱配合物以优异的产率（高达 99%）、非对映选择性和对映选择性（高达 >30:1 dr 和 98% ee）顺利促进反应。催化剂负载成功地降低到 0.1 mol%。机理研究表明，两个 Co 金属中心的分子内协同功能对于高催化活性和立体选择性很重要。