(2R)-1-nitro-2-(4-trifluoromethyl-phenyl)-eth-2-ylcarbamic acid tert-butyl ester

• 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: (2R)-1-nitro-2-(4-trifluoromethyl-phenyl)-eth-2-ylcarbamic acid tert-butyl ester
• 英文别名: (R)-[2-nitro-1-(4-trifluoromethyl-phenyl)-ethyl]-carbamic acid tert-butyl ester；tert-butyl (R)-2-nitro-1-(p-trifluoromethylphenyl)ethylcarbamate；(R)-tert-butyl 1-(4-trifluorophenyl)-2-nitroethylcarbamate；(R)-tert-butyl 2-nitro-1-(4-(trifluoromethyl)phenyl)ethylcarbamate；tert-butyl {(1R)-2-nitro-1-[4-(trifluoromethyl)phenyl]ethyl}carbamate；tert-butyl [2-nitro-1-(4-trifluoromethylphenyl)ethyl]carbamate；[(R)-1-[4-(Trifluoromethyl)phenyl]-2-nitroethyl]carbamic acid tert-butyl ester；tert-butyl N-[(1R)-2-nitro-1-[4-(trifluoromethyl)phenyl]ethyl]carbamate
• 化学式: C₁₄H₁₇F₃N₂O₄
• 分子量: 334.295
• InChiKey: OAOKQLQSRSURLZ-NSHDSACASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  84.2
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  tert-butyl (4-trifluoromethylphenyl(phenylsulfonyl)methyl)carbamate 在 4 A molecular sieve N-甲基麻黄碱 、 zinc trifluoromethanesulfonate 、 potassium carbonate 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 17.0h， 生成 (2R)-1-nitro-2-(4-trifluoromethyl-phenyl)-eth-2-ylcarbamic acid tert-butyl ester
  参考文献：
  名称：

  Zn（II）和N-甲基麻黄碱辅助的对映选择性aza-Henry反应。

  摘要：

  DOI：

  10.1002/anie.200502674

文献信息

• The Amino Thiourea-Catalyzed Asymmetric Nucleophilic Reactions
  作者：Yoshiji Takemoto、Hideto Miyabe

  DOI：10.2533/chimia.2007.269

  日期：——

  Bifunctional amino thiourea-catalyzed asymmetric additions of several nucleophiles into electron-deficient unsaturated compounds such as nitroolefins, ?,?-unsaturated imides, imines, and azodicarboxylates are described. We discovered that bifunctional thioureas bearing a tertiary amino group significantly accelerated several nucleophilic addition reactions of active methylene compounds to electron-deficient double bonds. In these reactions, a strong hydrogen-bonding ability of the thiourea moiety as well as an appropriate Brønsted basicity of the tertiary amine is crucial for high enantioselectivity. This dual activation of both nucleophiles and electrophiles by the bifunctional thiourea expanded the applicability of the thiourea-catalyzed enantioselective reaction. In addition, these organocatalyzed asymmetric reactions were successfully applied to the concise asymmetric synthesis of natural products and medicinal candidates such as epibatidine, baclofen, and CP-99,994.

  双功能氨基硫脲催化的不对称加成反应将几种亲核试剂加入到电子不足的不饱和化合物中，如硝基烯烃、α，β-不饱和亚酰胺、亚胺和叠氮二羧酸酯。我们发现，含有三级胺基的双功能硫脲显著加速了活性亚甲基化合物与电子不足双键的几种亲核加成反应。在这些反应中，硫脲基团的强氢键能力以及三级胺的适当Brønsted碱性对高对映选择性至关重要。双功能硫脲对亲核试剂和电子亲电试剂的双重活化扩展了硫脲催化的不对称反应的适用范围。此外，这些有机催化的不对称反应成功应用于天然产物和药用候选化合物的简洁不对称合成，如蛙毒碱、氯硝西泮和CP-99,994。
• Modular Bifunctional Chiral Thioureas as Versatile Organocatalysts for Highly Enantioselective Aza-Henry Reaction and Michael Addition
  作者：Hua Li、Xu Zhang、Xin Shi、Nan Ji、Wei He、Shengyong Zhang、Bangle Zhang

  DOI：10.1002/adsc.201200144

  日期：2012.8.13

  A series of new modular bifunctional chiral thiourea organocatalysts were synthesized from natural Cinchona alkaloids and amino acids, and their performance in the aza-Henry reaction of nitroalkanes to imines, the Michael addition of acetylacetone to nitroolefins and the Michael addition of acetone to nitroolefins was investigated. Under the mild conditions, the important building blocks β-nitro amines

  由天然金鸡纳生物碱和氨基酸合成了一系列新型的模块式双功能手性硫脲有机催化剂，研究了它们在硝基烷烃向亚胺的氮杂-亨利反应，乙酰丙酮到硝基烯烃的迈克尔加成反应以及丙酮到硝基烯烃的迈克尔加成反应中的性能。 。在温和的条件下，可以以高收率（高达95％），出色的对映选择性（高达99％ee）和非对映选择性（高达17：1）获得重要的构建基β-硝基胺和γ-硝基羰基化合物。。
• Oxazoline-Thiourea as a Bifunctional Organocatalyst: Enantioselective aza-Henry Reactions
  作者：Yu-wei Chang、Jing-jun Yang、Jin-ning Dang、Yue-xia Xue

  DOI：10.1055/s-2007-984916

  日期：——

  Bifunctional oxazoline-thiourea-based organocatalysts were synthesized and applied to the aza-Henry reactions between N-Boc aryl imines and nitromethane in high ee and chemical yields at room temperature.

  合成了基于恶唑啉-硫脲的双功能有机催化剂，并将其应用于 N-Boc 芳基亚胺与硝基甲烷之间的 aza-Henry 反应，在室温下具有高 ee 和化学产率。
• Novel bifunctional thiourea–ammonium salt catalysts derived from amino acids: application to highly enantio- and diastereoselective aza-Henry reaction
  作者：Hong-Yu Wang、Zhuo Chai、Gang Zhao

  DOI：10.1016/j.tet.2013.04.079

  日期：2013.6

  development of new efficient and easily accessible catalysts has been one of the focuses in asymmetric phase-transfer catalysis. In this paper, a novel class of chiral bifunctional thiourea–ammonium phase-transfer catalysts were synthesized from commercially available α-amino acids. The structural modularity of these catalysts permits facile tunings to achieve optimum results, which was demonstrated

  新型高效且易于获得的催化剂的开发一直是不对称相转移催化的重点之一。在本文中，从市场上可买到的α-氨基酸合成了一类新型的手性双官能硫脲-铵相转移催化剂。这些催化剂的结构模块性使其易于调节以获得最佳结果，这在催化氮杂-亨利反应中表现出优异的对映选择性（高达99.5％ee）和非对映选择性（高达> 25：1 dr）得到了证明。
• Bottom-Up Synthesis of Supported Thioureas and Their Use in Enantioselective Solvent-Free Aza-Henry and Michael Additions
  作者：José M. Andrés、Noelia de La Cruz、María Valle、Rafael Pedrosa

  DOI：10.1002/cplu.201500476

  日期：2016.1

  Two sets of supported chiral thioureas, which differ in the length of the tether that connects the chiral appendage to the polymer structure and the effective functionalization, have been prepared by copolymerization of styrene, novel styryl thioureas derived from l-valine, and divinylbenzene. The efficiency of these polymeric thioureas has been tested in two different enantioselective transformations

  通过苯乙烯，衍生自1-缬氨酸的新型苯乙烯基硫脲和二乙烯基苯的共聚制备了两组支持的手性硫脲，它们的连接手性附件与聚合物结构的束缚带的长度不同，并且有效官能化不同。在纯净的反应条件下，已通过两种不同的对映选择性转化，即氮杂-亨利和硝基-迈克尔反应，对这些聚合硫脲的效率进行了测试。所获得的结果表明，可以再循环硫脲，并且它们能够在低催化剂负载下以良好的对映选择性促进反应。