3-(2-chlorophenyl)-2-methyl-4-nitrobutanal | 1214908-53-8

• 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: 3-(2-chlorophenyl)-2-methyl-4-nitrobutanal
• 英文别名: (2RS,3RS)-2-methyl-4-nitro-3-(2-chlorophenyl)butanal
• CAS: 1214908-53-8
• 化学式: C₁₁H₁₂ClNO₃
• 分子量: 241.674
• InChiKey: KVUPQKFFYISABJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 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：

  1-chloro-2-(2-nitrovinyl)benzene 、 丙醛 在 solid phase supported (3R,5S)-5-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidin-3-ol 作用下， 以 乙腈 为溶剂， 反应 48.0h， 生成 3-(2-chlorophenyl)-2-methyl-4-nitrobutanal
  参考文献：
  名称：

  A General Approach for Preparation of Polymer-Supported Chiral Organocatalysts via Acrylic Copolymerization

  摘要：

  Polymer-supported chiral organocatalysts, as well as most other forms of immobilized catalysts! arc traditionally prepared by a postmodification approach where modified catalyst precursors are anchored onto prefabricated polymer beads. Herein, we report an alternative and more scalable approach where polymer-supported chiral enamine and iminium organocatalysts are prepared in a bottom-up fashion where methacrylic functional monomers are prepared in an entirely nonchromatographic manner and subsequently copolymerized with suitable comonomers to give cross-linked polymer beads. All syntheses have been conducted on multigram scale for all intermediates and finished polymer products, and the catalysts have proven successful in reactions taking place in solvents spanning a wide range of solvent polarity. While polymer-supported proline and proline-amides generally demonstrated excellent results and recycling robustness in asymmetric aldol reactions or ketones and benzaldehydes, the simplest type of Jorgensen/Hayashi diarylprolinol TMS-ether showed excellent selectivity, but rather sluggish reactivity in the Enders-type asymmetric cascade. The polymer-supported version of the first-generation MacMillan imidazolidinone had a pattern of reactivity very similar to that of the monomeric catalyst, but is too unstable to allow recycling.

  DOI：

  10.1021/jo902585j

文献信息

• Superparamagnetic Nanoparticle-Supported (S)-Diphenyl- prolinol Trimethylsilyl Ether as a Recyclable Catalyst for Asymmetric Michael Addition in Water
  作者：Bang Gen Wang、Bao Chun Ma、Qiong Wang、Wei Wang

  DOI：10.1002/adsc.201000508

  日期：2010.11.22

  A new superparamagnetic nanoparticle-supported (S)-diphenylprolinol trimethylsilyl ether (Jørgensen–Hayashi catalyst) was synthesized and applied for the asymmetric Michael addition of aldehydes to nitroalkenes in water, which gives products in moderate to good yields (up to 96%), good enantioselectivity (up to 90% ee) and diastereoselectivities (up to 99:1). The immobilized catalyst could be easily

  合成了一种新的超顺磁性纳米粒子负载的（S）-二苯基脯氨醇三甲基甲硅烷基醚（Jrrgensen–Hayashi催化剂），并将其用于醛在水中硝基苯的不对称迈克尔加成反应，从而使产品收率适中至良好（最高96％），良好的对映选择性（高达90％ee）和非对映选择性（高达99：1）。固定的催化剂可以容易地通过外部磁体与反应分离，并循环四次而不会显着降低催化效率。
• “Bottom-Up” Embedding of the Jørgensen-Hayashi Catalyst into a Chiral Porous Polymer for Highly Efficient Heterogeneous Asymmetric Organocatalysis
  作者：Chang An Wang、Zhi Kun Zhang、Tao Yue、Ya Lei Sun、Lei Wang、Wei David Wang、Yuan Zhang、Chong Liu、Wei Wang

  DOI：10.1002/chem.201200753

  日期：2012.5.29

  construction of a robust chiral porous polymer (JH‐CPP) embedded with the Jørgensen–Hayashi catalyst (JH) has been successfully achieved for highly efficient heterogeneous organocatalysis. The high BET surface area, wide openings and interconnected nanopores of JH‐CPP increase the accessibility of catalytic sites and as such the catalyst shows excellent activity in catalyzing the asymmetric Michael addition

  唯一的办法就是向上！已经成功实现了嵌入约恩根森-早石催化剂（JH）的坚固的手性多孔聚合物（JH-CPP）的“自下而上”构造，可实现高效的多相有机催化。JH-CPP的高BET表面积，宽阔的开口和相互连接的纳米孔增加了催化部位的可及性，因此，该催化剂在催化不对称迈克尔加成反应方面显示出出色的活性（请参阅方案）。
• POSS supported diarylprolinol silyl ether as an efficient and recyclable organocatalyst for asymmetric Michael addition reactions
  作者：Wei Zheng、Cuifen Lu、Guichun Yang、Zuxing Chen、Junqi Nie

  DOI：10.1016/j.catcom.2015.01.002

  日期：2015.3

  The POSS supported (S)-α,α-diphenylprolinol trimethylsilyl ether catalyst was synthesized and applied in the asymmetric Michael addition reactions of aldehydes and arylnitroalkenes, providing the products in good yields with excellent enantioselectivities and good diastereoselectivities. The POSS supported catalyst can be readily recycled and reused for further transformations at least eight cycles

  合成了POSS负载的（S）-α，α-二苯基脯氨醇三甲基甲硅烷基醚催化剂，并将其应用于醛与芳基硝基烯烃的不对称迈克尔加成反应中，提供了具有良好对映选择性和良好非对映选择性的高收率产品。POSS负载的催化剂可以容易地再循环并至少在八个循环内再用于进一步的转化，而没有观察到产率和立体选择性的显着降低。
• Asymmetric Michael addition reactions of aldehydes to β-nitrostyrenes catalyzed by (S)–N-(D-prolyl-L-prolyl)-1 -triflicamido-3 -phenylpropan-2-amine
  作者：Amol B. Gorde、Anas Ansari、Ramesh Ramapanicker

  DOI：10.1016/j.tet.2021.132095

  日期：2021.5

  pan-2-amine, a catalyst previously reported by us for the asymmetric Michael addition of aldehydes to β-nitrostyrenes, 4 new molecules were designed and synthesized by increasing the distance between the triflicamide group and the secondary amino group in the catalyst. Under the optimized reaction conditions (S)–N-(D-prolyl-L-prolyl)-1-triflicamido-3-phenylpropan-2-amine exhibited high and improved

  为了提高（S）– N-（D-脯氨酰基）-1-三酰胺基-3-苯基丙烷-2-胺的催化能力，以前我们曾报道过一种将醛不对称地迈克尔加成到β-硝基苯乙烯中的催化剂通过增加三氟甲酰胺基团和催化剂中仲氨基之间的距离，设计并合成了4个新分子。在优化的反应条件下（S）– N-（D-脯氨酰基-L-脯氨酰基）-1-三氟酰胺基-3-苯基丙烷-2-胺在较低的催化剂负载量（3mol％）下表现出高的和改善的催化活性和立体选择性。在对大量醛和β-硝基苯乙烯进行的研究中，迈克尔加合物的收率高（高达94％），具有出色的对映选择性（高达98％ee）和良好的至优异的非对映选择性（高达98） ：2博士）。
• Asymmetric Conjugate Addition of Unmodified Propionaldehyde to β- Nitrostyrenes Catalyzed by Readily Available Proline-Based Dipeptidols
  作者：Ren-Yong Yang、Chao-Shan Da、Lei Yi、Feng-Chun Wu、Hong Li

  DOI：10.2174/157017809787003061

  日期：2009.1.1

  Organocatalytic asymmetric additions of unmodified aldehydes to β-nitrostyrenes are important carbon-carbon bond formation reactions and have become very attractive recently, because they are metal-free and environmentally benign. This work employed a series of L-proline-based diphenyl dipeptidols to catalyze this reaction. The results showed that these dipeptidols were effective organocatalysts with the yield up to 99%. 3a was optimal with the highest enantioselectivity up to 75% and dr (syn/anti) up to 94/6. In addition, the mechanism of this asymmetric reaction is also discussed.

  未改性醛与β-硝基苯炔的有机催化不对称加成反应是重要的碳-碳键形成反应，由于不含金属且对环境无害，近来变得非常有吸引力。这项研究采用了一系列基于 L-脯氨酸的二苯基二肽醇来催化这一反应。结果表明，这些二肽醇是有效的有机催化剂，产率高达 99%。3a 的对映选择性最高，可达 75%，dr（同/反）高达 94/6。此外，还讨论了该不对称反应的机理。