(2S,3R)-5-methyl-2-nitrohexan-3-ol | 1334165-07-9

• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物 - 烯丙基型1,3-偶极有机化合物
• 英文名称: (2S,3R)-5-methyl-2-nitrohexan-3-ol
• 英文别名: 5-methyl-2-nitrohexane-3-ol；5-methyl-2-nitrohexan-3-ol
• CAS: 1334165-07-9
• 化学式: C₇H₁₅NO₃
• 分子量: 161.201
• InChiKey: TXJLIBPENXKBMH-NKWVEPMBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  66
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  1-溴-1-硝基乙烷 、 异戊醛 在 indium 、 碳酸氢钠 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 6.33h， 生成 (2S,3R)-5-methyl-2-nitrohexan-3-ol 、 (2R,3R)-5-methyl-2-nitrohexane-3-ol
  参考文献：
  名称：

  Indium-mediated reaction of nitroethane and aldehydes: characterization of the nucleophilic organoindium species

  摘要：

  A novel method for the preparation of 2-nitroalkan-1 -ols by an indium-promoted reaction of bromonitromethane and 2-bromonitropropane with a variety of aldehydes was recently reported. Extension of the procedure to 1-bromo-1-nitroethane, which gives rise to a new chiral centre, was considered. On the basis of the diastereoselectivity of the nitroalkanols formed and NMR studies on the reaction mixtures, a mechanistic proposal for the indium-promoted reaction of bromonitroalkanes and aldehydes is discussed. The proposed mechanism allows the prediction of the stereochemical outcome of the present reaction. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2011.11.094

文献信息

• Efficient Asymmetric Copper(I)-Catalyzed Henry Reaction Using Chiral N-Alkyl-C1-tetrahydro-1,1′-bisisoquinolines
  作者：Yao Qiong ji、Gao Qi、Zaher M. A. Judeh

  DOI：10.1002/ejoc.201100579

  日期：2011.7.14

  closely related chiral N-alkyl-C1-tetrahydro-1,1′-bisisoquinoline ligands only differing in the steric bulk of the alkyl groups has been examined in the asymmetric Henry reaction. A complex derived from the (R)-N-methyl-1′,2′,3′,4′-tetrahydro-1,1′-bisisoquinoline and copper(I) chloride proved to be a very efficient catalyst system that can promote the reaction of a wide range of aromatic and aliphatic

  在不对称亨利反应中研究了一系列密切相关的手性 N-烷基-C1-四氢-1,1'-双异喹啉配体，仅在烷基的空间体积上有所不同。由 (R)-N-methyl-1',2',3',4'-tetrahydro-1,1'-bisisoquinoline 和氯化铜 (I) 衍生的复合物被证明是一种非常有效的催化剂体系，可以促进多种芳香族和脂肪族醛的反应以高产率（高达 99 %）、出色的对映选择性（高达 94 % ee）和适中的非对映选择性（高达 1.6:1）得到预期的硝基醇产物。这种催化剂体系非常通用，不需要用于活化的添加剂，并且操作也简单，因为没有采取特殊的预防措施来排除反应烧瓶中的水分或空气。
• Asymmetric Henry reactions catalyzed by metal complexes of chiral oxazoline based ligands
  作者：A. Ebru Aydin、Seda Yuksekdanaci

  DOI：10.1016/j.tetasy.2012.11.022

  日期：2013.1

  Chiral oxazolines have been synthesized from norephedrine and pyrrole nitrile or benzoyl chloride and applied to the catalytic asymmetric Henry reactions of p-nitro aldehydes with nitromethane to provide β-hydroxy nitroalkanols in high conversion (up to 92%). The reaction was then optimized in terms of the metal, solvent, temperature, and amount of chiral ligand. The corresponding catalyst with Cu(OTf)2

  由去氧麻黄碱和吡咯腈或苯甲酰氯合成了手性恶唑啉，并将其用于对硝基醛与硝基甲烷的催化不对称亨利反应，以高转化率（高达92％）提供β-羟基硝基链烷醇。然后根据金属，溶剂，温度和手性配体的量优化反应。用Cu（OTf）2和异丙醇作为溶剂的相应催化剂给出了相应的β-硝基链烷醇对对硝基苯甲醛的最佳对映选择性（最高84％ee）。
• Henry Reaction in Aqueous Media at Neutral pH
  作者：Pranjal P. Bora、Ghanashyam Bez

  DOI：10.1002/ejoc.201201682

  日期：2013.5

  An efficient method for the synthesis of β-nitro alcohols from nitro alkanes and aldehydes in aqueous phosphate buffer under neutral pH conditions at room temperature is reported. In the case of higher nitro alkanes, the reaction showed very good diastereoselectivity to give syn β-nitro alcohols in preference to their anti products.

  报道了一种在室温下在中性 pH 条件下在磷酸盐缓冲液中从硝基烷烃和醛合成 β-硝基醇的有效方法。在高级硝基烷烃的情况下，该反应显示出非常好的非对映选择性，优先得到顺式 β-硝基醇而不是它们的反产物。
• Cu (II)-Catalyzed Asymmetric Henry Reaction with a Novel C1-Symmetric Aminopinane-Derived Ligand
  作者：Liudmila Filippova、Yngve Stenstrøm、Trond Hansen

  DOI：10.3390/molecules20046224

  日期：——

  A novel C1-symmetric dinitrogen ligand was synthesized in high yield from commercially available (1R,2R,3R,5S)-(-)-isopinocampheylamine and 1-methyl-2-imidazolecarboxaldehyde. In combination with Cu(OAc)2H2O, this new ligand promote the reaction between nitromethane and aliphatic aldehydes with high yields (up to 97%) and moderate enantioselectivities (up to 67% ee). The reactions with benzaldehyde

  从市售的（1R，2R，3R，5S）-（-）-异樟脑胺和1-甲基-2-咪唑甲醛中高产率地合成了一种新型的C1对称二氮配体。与Cu（OAc）2H2O结合使用时，这种新的配体可促进硝基甲烷与脂肪醛之间的反应，产率高（高达97％）和中等对映选择性（ee高达67％）。与苯甲醛的反应需要延长反应时间，导致收率降低，但ee值在55％-76％之间。
• <i>syn</i> ‐ and Enantioselective Henry Reactions of Aliphatic Aldehydes and Application to the Synthesis of Safingol
  作者：Dan‐Dan Qin、Wen Yu、Jie‐Dan Zhou、Yan‐Cheng Zhang、Yuan‐Ping Ruan、Zhao‐Hui Zhou、Hong‐Bin Chen

  DOI：10.1002/chem.201303650

  日期：2013.12.2

  Atom‐economic synthesis: The syn‐ and highly enantioselective Henry reactions of aliphatic aldehydes catalyzed by a readily available β‐amino alcohol copper catalyst were developed and successfully utilized in the synthesis of safingol. The ligand could be easily recovered without any racemization (see scheme).

  原子经济合成：已开发出一种由现成的β-氨基醇铜催化剂催化的脂族醛的顺式和高度对映选择性的亨利反应，并成功地将其用于番红花酚的合成。配体可以很容易地被回收而没有外消旋作用（见方案）。