(R)-3-(2-bromophenyl)-2,2-dimethyl-4-nitrobutanal | 1263093-53-3

• 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: (R)-3-(2-bromophenyl)-2,2-dimethyl-4-nitrobutanal
• 英文别名: (3R)-3-(2-bromophenyl)-2,2-dimethyl-4-nitrobutanal
• CAS: 1263093-53-3
• 化学式: C₁₂H₁₄BrNO₃
• 分子量: 300.152
• InChiKey: IWFHGLRCCCKBST-JTQLQIEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  62.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  o-bromonitrostyrene 、 异丁醛 在 L-Phenylalanine lithium salt 作用下， 以 二氯甲烷 为溶剂， 反应 72.0h， 以83%的产率得到(R)-3-(2-bromophenyl)-2,2-dimethyl-4-nitrobutanal
  参考文献：
  名称：

  不对称迈克尔加成醛以使用伯氨基磺酸锂盐硝基烯烃†

  摘要：

  通过不对称催化反应，成功进行了醛对硝基烯烃的对映选择性迈克尔加成反应。 L-苯丙氨酸锂 盐，以高收率和高对映选择性得到γ-硝基醛。

  DOI：

  10.1039/c003940c

文献信息

• Asymmetric Michael Addition Organocatalyzed by α,β-Dipeptides under Solvent-Free Reaction Conditions
  作者：C. Gabriela Avila-Ortiz、Lenin Díaz-Corona、Erika Jiménez-González、Eusebio Juaristi

  DOI：10.3390/molecules22081328

  日期：——

  α,β-dipeptides as chiral organocatalysts in the asymmetric Michael addition reaction between enolizable aldehydes and N-arylmaleimides or nitroolefins is described. With N-arylmaleimides as substrates, the best results were achieved with dipeptide 2 as a catalyst in the presence of aq. NaOH. Whereas dipeptides 4 and 6 in conjunction with 4-dimethylaminopyridine (DMAP) and thiourea as a hydrogen bond

  描述了六种新的α，β-二肽作为手性有机催化剂在可烯化醛与N-芳基马来酰亚胺或硝基烯烃之间的不对称迈克尔加成反应中的应用。以N-芳基马来酰亚胺为底物，在水溶液中存在二肽2作为催化剂可获得最佳结果。氢氧化钠 而二肽4和6与4-二甲基氨基吡啶（DMAP）和作为氢键供体的硫脲结合，被证明是异丁醛与各种硝基烯烃之间对映选择性反应中的高效有机催化体系。
• Highly enantioselective Michael addition of aldehydes to nitroolefins catalyzed by primary amine thiourea organocatalysts
  作者：Jia-Rong Chen、You-Quan Zou、Liang Fu、Fan Ren、Fen Tan、Wen-Jing Xiao

  DOI：10.1016/j.tet.2010.05.056

  日期：2010.7

  Asymmetric Michael addition reactions of aldehydes to nitroolefins have been successfully initiated by a series of primary amine thiourea bifunctional catalysts, with high enantioselectivities (90–98% ee) and excellent yields (80–96%). The privileged quinine scaffold was found to be essential to the reaction efficiency and enantioselectivity.

  一系列伯胺硫脲双功能催化剂具有高对映选择性（90-98％ee）和优异的收率（80-96％），已成功地引发了醛与硝基烯烃的迈克尔不对称迈克尔加成反应。发现特权的奎宁支架对于反应效率和对映选择性是必不可少的。
• Asymmetric Michael Addition of Isobutyraldehyde to Nitroolefins Using an <i>α</i>,<i>α</i>-Diphenyl-(<i>S</i>)-prolinol-Derived Chiral Diamine Catalyst
  作者：Wei Han、Takeshi Oriyama

  DOI：10.1246/bcsj.20200078

  日期：2020.8.15

  The enantioselective Michael addition of isobutyraldehyde to nitroolefin analogs was achieved by utilizing an α,α-diphenyl-(S)-prolinol-derived chiral diamine catalyst 1b. In this protocol, catalys...

  通过使用α,α-二苯基-(S)-脯氨醇衍生的手性二胺催化剂1b，实现了异丁醛对硝基烯烃类似物的对映选择性迈克尔加成。在该协议中，催化剂...
• Practical access to highly enantioenriched quaternary carbon Michael adducts using simple organocatalysts
  作者：Thomas C. Nugent、Mohammad Shoaib、Amna Shoaib

  DOI：10.1039/c0ob00822b

  日期：——

  A three component catalyst system entailing an amino acid (OtBu-L-threonine), a hydrogen bond donor (sulfamide), and an amine base (DMAP) allows α-branched aldehyde addition to nitroalkenes in good to high yield and excellent ee. Importantly, the lowest reported catalyst loading (5.0 mol%) and aldehyde stoichiometry (1.2–2.0 equiv) is demonstrated and in most instances the best current product profile is observed.

  一种由氨基酸（OtBu-L-苏氨酸）、氢键供体（硫酰胺）和胺碱（DMAP）组成的三组分催化剂体系可使α-支链醛加成到硝基烯烃，产率高且ee值优异。重要的是，该催化剂的负载量（5.0 摩尔%）和醛的化学计量（1.2-2.0 等量）均达到了报告中的最低水平，而且在大多数情况下都能观察到最佳的当前产物曲线。
• Calixarene-based highly efficient primary amine–thiourea organocatalysts for asymmetric Michael addition of aldehydes to nitrostyrenes
  作者：Mustafa Durmaz、Abdulkadir Sirit

  DOI：10.1080/10610278.2013.773331

  日期：2013.5.1

  The synthesis of calix[4]arene-based chiral bifunctional primary amine–thiourea catalysts has been described from p-tert-butylcalix[4]arene for the first time. The calix[4]arene-based catalysts were successfully applied to promote Michael addition of aldehydes with nitroalkenes affording preferentially the (R)- or (S)-adducts in high yields (up to 95%) and excellent enantioselectivities (up to 99%

  首次描述了从对叔丁基杯[4]芳烃合成基于杯[4]芳烃的手性双功能伯胺-硫脲催化剂。杯[4]芳烃基催化剂被成功应用于促进醛与硝基烯烃的迈克尔加成，优先提供（R）-或（S）-加合物的高产率（高达95%）和优异的对映选择性（高达99%） es）。