(S)-4-methyl-3-tosylamino-pentane-1-nitrile | 875438-79-2

• 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: (S)-4-methyl-3-tosylamino-pentane-1-nitrile
• 英文别名: (3R)-(p-toluenesulfonyl)amino-4-methylpentionitrile；(3R)-3-(p-toluenesulfonyl)amino-4-methylpentanenitrile；N-[(2R)-1-cyano-3-methylbutan-2-yl]-4-methylbenzenesulfonamide
• CAS: 875438-79-2
• 化学式: C₁₃H₁₈N₂O₂S
• 分子量: 266.364
• InChiKey: WSPDGDMKYQDJSV-CYBMUJFWSA-N

物化性质

• 熔点：
  85-87 °C(Solv: ethyl ether (60-29-7))
• 沸点：
  428.4±55.0 °C(Predicted)
• 密度：
  1.143±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  78.3
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (S)-4-methyl-3-tosylamino-pentane-1-nitrile 在 二异丁基氢化铝 作用下， 以 四氢呋喃 为溶剂， 反应 0.5h， 以85%的产率得到(S)-4-methyl-3-tosylamino-1-pentanal
  参考文献：
  名称：

  从α-氨基酸对映体纯的N-甲苯磺酰氮杂环丁烷的简便合成路线

  摘要：

  以非常简单的化学方法，从手性α-氨基酸开始，以良好的总收率描述了各种手性2-取代-和2,4-二取代-N-甲苯磺酰氮杂环丁烷（ee> 99％）的通用且方便的合成途径。

  DOI：

  10.1016/j.tetlet.2007.02.033
• 作为产物：
  描述：

  L-缬氨醇 在 吡啶 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 (S)-4-methyl-3-tosylamino-pentane-1-nitrile
  参考文献：
  名称：

  Stereoselective synthesis of 2,4,5-trisubstituted piperidines by carbonyl ene and Prins cyclisations

  摘要：

  浓盐酸催化的醛类3a–e的环化反应在2-取代基较小的情况下，主要生成全顺式的2,4,5-三取代哌啶4a–e，而使用MeAlCl2在氯仿回流条件下催化则生成反式哌啶5a–e，差异体比可高达99 : 1。

  DOI：

  10.1039/b515547a

文献信息

• A convenient synthetic route to enantiopure N-tosylazetidines from α-amino acids
  作者：Manas K. Ghorai、Kalpataru Das、Amit Kumar

  DOI：10.1016/j.tetlet.2007.02.033

  日期：2007.4

  A general and convenient synthetic route to various chiral 2-substituted- and 2,4-disubstituted-N-tosylazetidines (ee >99%) is described in good overall yields starting from chiral α-amino acids using very simple chemistry.

  以非常简单的化学方法，从手性α-氨基酸开始，以良好的总收率描述了各种手性2-取代-和2,4-二取代-N-甲苯磺酰氮杂环丁烷（ee> 99％）的通用且方便的合成途径。
• Stereoselective synthesis of 2,4,5-trisubstituted piperidines by carbonyl ene and Prins cyclisations
  作者：Claire A. M. Cariou、Benson M. Kariuki、John S. Snaith

  DOI：10.1039/b808644c

  日期：——

  An approach to 2,4,5-trisubstituted piperidines is reported, in which the key step is the Prins or carbonyl ene cyclisation of aldehydes of the type 1. Prins cyclisation catalysed by concentrated hydrochloric acid in CH2Cl2 at −78 °C afforded good yields of two of the four possible diastereomeric piperidines, with the 4,5-cis product 7 predominating in a diastereomeric ratio of up to 94 : 6. The diastereoselectivity of the cyclisation decreased as the 2-substituent increased in size, becoming unselective for very bulky 2-substituents. In contrast, cyclisation catalysed by MeAlCl2 in CH2Cl2 or CHCl3 at temperatures of between 20–60 °C, favoured the 4,5-trans diastereomer 8, in a diastereomeric ratio of up to 99 : 1. The low-temperature cyclisations catalysed by HCl proceed under kinetic control via a mechanism involving the development of significant carbocationic character, in which the 4,5-cis cation is more stable than the 4,5-trans cation as a result of overlap with the neighbouring oxygen. The cyclisations catalysed by MeAlCl2 proceed under thermodynamic control, affording the product in which both the 4- and 5-substituents are equatorial.

  报告了一种合成2,4,5-三取代哌啶的方法，其中关键步骤是醛类化合物1的Prins或羰基烯环化反应。在-78°C下，采用浓盐酸催化的CH2Cl2中进行的Prins环化反应，获得了四种可能的立体异构体中的两种良好产率，其中4,5-顺式产物7的产率在立体异构体比率上高达94:6。随着2-取代基体积的增大，环化反应的立体选择性降低，对于体积非常大的2-取代基体则变得无选择性。相比之下，在20–60°C的CH2Cl2或CHCl3中，MeAlCl2催化的环化反应则偏向于4,5-反式立体异构体8，其立体异构体比率高达99:1。由HCl催化的低温环化反应在动力学控制下进行，机制涉及显著的碳正离子特性，其中，4,5-顺式阳离子由于与相邻氧的重叠而比4,5-反式阳离子更稳定。而由MeAlCl2催化的环化反应则在热力学控制下进行，生成的产物中4-和5-取代基均为赤面配置。
• Synthesis of novel N-protected β3-amino nitriles: study of their hydrolysis involving a nitrilase-catalyzed step
  作者：Maité Sylla-Iyarreta Veitía、Pierre Louis Brun、Pierre Jorda、Annie Falguières、Clotilde Ferroud

  DOI：10.1016/j.tetasy.2009.07.045

  日期：2009.9

  Several commercially available nitrilases were investigated with regard to their potential to hydrolyze N-protected beta(3)-amino nitriles into their corresponding N-protected beta(3)-amino acids.The biotransformations were obtained in different proportions depending oil the nitrilase involved The best hydrolysis results were achieved for the N-Cbz-beta(3)-amino nitrile from i-alanine using the NIT-107, in a phosphate buffer at 0 05 M However, no biotransformation into the corresponding acids was observed for the N-sulfonylamide beta(3)-amino nitriles. Two simple and efficient procedures to prepare the beta(3)-amino nitriles from their analogous alpha-amino acids are described Thirty four new substances were synthesized and characterized over the course of this work. (C) 2009 Elsevier Ltd All rights reserved
• Synthesis and biological evaluation of reversible inhibitors of IdeS, a bacterial cysteine protease and virulence determinant
  作者：Kristina Berggren、Björn Johansson、Tomas Fex、Jan Kihlberg、Lars Björck、Kristina Luthman

  DOI：10.1016/j.bmc.2009.03.026

  日期：2009.5

  Analogues of the irreversible protease inhibitors TPCK and TLCK have been synthesized and tested as inhibitors of the bacterial cysteine protease IdeS excreted by Streptococcus pyogenes. Eight compounds were identified as inhibitors of IdeS in an in vitro assay. The most potent compounds contained an aldehyde function, thus acting as efficient reversible inhibitors, nitrile and azide derivatives showed moderate activity. (C) 2009 Elsevier Ltd. All rights reserved.
• Synthesis of Fused and Linked Bicyclic Nitrogen Heterocycles by Palladium-Catalyzed Domino Cyclization of Propargyl Bromides
  作者：Akinori Okano、Koji Tsukamoto、Shohei Kosaka、Hatsuo Maeda、Shinya Oishi、Tetsuaki Tanaka、Nobutaka Fujii、Hiroaki Ohno

  DOI：10.1002/chem.201000653

  日期：——

  The palladium(0)‐catalyzed direct construction of bicyclic heterocycles is described. Treatment of propargyl bromides that have nucleophilic functional groups connected by two or three carbon atoms with catalytic [Pd(PPh3)4] affords bis‐cyclization products in good yields. The desired bicyclic heterocycles can be obtained selectively when using substrates with appropriate nucleophilic groups. We also

  描述了钯（0）催化的双环杂环的直接结构。通过催化[Pd（PPh 3）4 ]处理具有两个或三个碳原子相连的亲核官能团的炔丙基溴，可以得到双环化产物，收率很高。当使用具有适当亲核基团的底物时，可以选择性地获得所需的双环杂环。我们还描述了在无碱条件下2-炔基氮杂环丁烷衍生物与催化量的[Pd（PPh 3）4 ]的反应，该反应提供了与相应的炔丙基溴相同的稠合杂环。