(R)-2-((S)-1-(4-甲基苯基)-2-硝基乙基)戊醛 | 1025217-88-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 中文名称: (R)-2-((S)-1-(4-甲基苯基)-2-硝基乙基)戊醛
• 英文名称: (R)-2-[(S)-1-(4-methylphenyl)-2-nitroethyl]pentanal
• 英文别名: (2R)-2-[(1S)-1-(4-methylphenyl)-2-nitroethyl]pentanal
• CAS: 1025217-88-2
• 化学式: C₁₄H₁₉NO₃
• 分子量: 249.31
• InChiKey: BBBJGJMEOUQGKG-UONOGXRCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  18
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 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：

  正戊醛 、 (E)-2-(4-methylphenyl)-1-nitroethene 在 [(2S)-2-benzhydrylpyrrolidin-1-yl]-[(2S)-pyrrolidin-2-yl]methanone 、 S-1,1'-联-2-萘酚 作用下， 以 甲苯 为溶剂， 反应 24.0h， 以80%的产率得到(R)-2-((S)-1-(4-甲基苯基)-2-硝基乙基)戊醛
  参考文献：
  名称：

  Application of l-prolinamides as highly efficient organocatalysts for the asymmetric Michael addition of unmodified aldehydes to nitroalkenes

  摘要：

  The asymmetric Michael addition of aldehydes to nitroolefins was investigated using a combination of L-prolinamide derivatives and various acidic additives. (S)-1,1'-Bi-2-naphthol was found to be the most effective co-catalyst and afforded the nitroaldehyde products with excellent yields (up to 95%), enantiomeric excesses (up to 99%) and diastereoselectivity ratios (up to 99:1). (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2012.01.008

文献信息

• Structure-Reactivity Studies of Simple 4-Hydroxyprolinamide Organocatalysts in the Asymmetric Michael Addition Reaction of Aldehydes to Nitroolefins
  作者：John Watts、Lien Luu、Vickie McKee、Ed Carey、Fintan Kelleher

  DOI：10.1002/adsc.201100028

  日期：2012.4.16

  A series of simple 4‐hydroxyprolinamides was synthesised and they were found to act as organocatalysts for the asymmetric conjugate addition of aldehydes to nitroolefins in excellent yields (98%), with complete diastereoselectivity (99:1, syn:anti) and enantioselectivity (98% ee for syn). Furthermore, the use of low catalyst loadings (5 mol%) and a low aldehyde molar excess (1.5 equivalents) were achieved

  合成了一系列简单的4-羟基脯氨酰胺，发现它们可以作为有机催化剂，以极高的收率（98％），全非对映选择性（99：1，syn：anti）和对映选择性（98）将醛不对称共轭加成至硝基烯烃。％ee，代表syn）。此外，实现了低催化剂负载量（5mol％）和低醛摩尔过量（1.5当量）的使用。
• Michael addition of carbonyl compounds to nitroolefins under the catalysis of new pyrrolidine-based bifunctional organocatalysts
  作者：A. Castán、R. Badorrey、J. A. Gálvez、P. López-Ram-de-Víu、M. D. Díaz-de-Villegas

  DOI：10.1039/c7ob02798b

  日期：——

  the asymmetric Michael addition of carbonyl compounds to nitroolefins have been synthesised from homoallylamines, which are easily obtained from (R)-glyceraldehyde as a chiral precursor. Under optimal reaction conditions, these bifunctional organocatalysts showed a high catalytic efficiency (almost quantitative yield in most cases) and stereoselectivity in the Michael addition reactions of a variety

  已经从高烯丙基胺合成了用于羰基化合物不对称迈克尔加成到硝基烯烃的新型双官能吡咯烷基有机催化剂，其很容易从作为手性前体的（R）-甘油醛获得。在最佳反应条件下，这些双功能有机催化剂在多种醛（高达98：2 dr和97％ee）和酮（高达5％）的迈克尔加成反应中显示出高催化效率（在大多数情况下几乎是定量产率）和立体选择性。 98：2 dr和99％ee）转化为硝基烯烃。
• Diphenylprolinol silyl ether-derived thioureas as highly efficient catalysts for the asymmetric Michael addition of aldehydes to nitroalkenes
  作者：Chunyan He、Xiaochen Ren、Yingle Feng、Yonghai Chai、Shengyong Zhang、Weiping Chen

  DOI：10.1016/j.tetlet.2015.04.119

  日期：2015.6

  This Letter described the synthesis of the first diarylprolinol silyl ether-derived bifunctional thiourea organocatalysts. The catalysts were applied to the asymmetric Michael addition of aldehydes to nitroalkenes to give the desired adducts in good yields (up to 99%) with excellent enantioselectivities (up to 99% ee) and excellent diastereoselectivities (up to 99:1). The spatial placement of C-4 substituent

  这封信描述了第一种由二芳基脯氨醇甲硅烷基醚衍生的双官能硫脲有机催化剂的合成。将催化剂应用于醛与硝基烯烃的不对称迈克尔加成反应，以良好的收率（高达99％ee）和出色的非对映选择性（高达99：1）以良好的收率（高达99％）得到所需的加合物。C-4取代基的空间位置对反应活性和立体选择性很重要。
• Synthesis of new pyrrolidine-based organocatalysts and study of their use in the asymmetric Michael addition of aldehydes to nitroolefins
  作者：Alejandro Castán、Ramón Badorrey、José A Gálvez、María D Díaz-de-Villegas

  DOI：10.3762/bjoc.13.59

  日期：——

  pyrrolidine-based organocatalysts with a bulky substituent at C2 were synthesized from chiral imines derived from (R)-glyceraldehyde acetonide by diastereoselective allylation followed by a sequential hydrozirconation/iodination reaction. The new compounds were found to be effective organocatalysts for the Michael addition of aldehydes to nitroolefins and enantioselectivities up to 85% ee were achieved

  通过衍生自非对映选择性烯丙基化，随后进行顺序的加氢锆化/碘化反应，由（R）-甘油醛丙酮化物衍生的手性亚胺合成了在C2具有较大取代基的新型吡咯烷基有机催化剂。发现新化合物是醛向硝基烯烃的迈克尔加成反应的有效有机催化剂，对映选择性高达85％ee。
• Chiral hybrid materials based on pyrrolidine building units to perform asymmetric Michael additions with high stereocontrol
  作者：Sebastián Llopis、Teresa García、Ángel Cantín、Alexandra Velty、Urbano Díaz、Avelino Corma

  DOI：10.1039/c8cy01650j

  日期：——

  active chiral moieties along the network. The hybrid material was studied by means of different characterization techniques (TGA, NMR and IR spectroscopy, chemical and elemental analyses, TEM, and textural measurements), verifying the stability and integrity of the asymmetric active sites in the solid. The hybrid material, HybPyr, is an excellent asymmetric heterogeneous and recyclable catalyst for enantioselective

  基于硅质骨架 HybPyr 中包含的吡咯烷单元，合成了一种新型手性介孔杂化材料，并由特定的双甲硅烷基化前体整合到有机-无机结构中。在软合成条件下且在没有复杂的结构导向剂的情况下，氟化物溶胶-凝胶方法可以产生介孔结构，活性手性部分沿网络均匀分布。通过不同的表征技术（TGA、NMR 和 IR 光谱、化学和元素分析、TEM 和结构测量）对杂化材料进行了研究，验证了固体中不对称活性位点的稳定性和完整性。杂化材料 HybPyr 是一种优异的不对称多相且可回收的催化剂，用于线性醛与 β-硝基苯乙烯衍生物的对映选择性迈克尔加成反应，并对反应产物具有高度立体控制。