(S)-nonan-2-yl acetate

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (S)-nonan-2-yl acetate
• 英文别名: (S)-2-nonyl acetate；nonan-2-yl acetate；(2s)-2-Acetoxynonane；[(2S)-nonan-2-yl] acetate
• 化学式: C₁₁H₂₂O₂
• 分子量: 186.294
• InChiKey: GSUGVJOUDSLEBL-JTQLQIEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  13
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-壬酮 在 Rh(III)-NHC 盐酸 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 36.5h， 生成 (S)-nonan-2-yl acetate
  参考文献：
  名称：

  Synthesis of novel axially chiral Rh–NHC complexes derived from BINAM and application in the enantioselective hydrosilylation of methyl ketones

  摘要：

  新型轴向手性铑N-杂环碳烯配合物由轴向不对称的1,1'-联萘基-2,2'-二胺制备，并应用于铑催化的甲基酮不对称氢硅化反应。相应的高级醇可获得高产率，其对映体过量率良好至优秀。

  DOI：

  10.1039/b309185f

文献信息

• Preparation of Passion Fruit-Typical 2-Alkyl Ester Enantiomers via Lipase-Catalyzed Kinetic Resolution
  作者：Hedwig Strohalm、Susanne Dold、Kathrin Pendzialek、Monika Weiher、Karl-Heinz Engel

  DOI：10.1021/jf100432s

  日期：2010.5.26

  fruit-typical 2-alkyl esters by capillary gas chromatography using heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin as chiral stationary phase. An efficient method was developed to prepare the ester enantiomers via lipase-catalyzed esterifications: optically pure (R)-2-alkyl esters (ee > 99.9%) were obtained by esterification of the racemic alcohols with enantioselective Candida antarctica

  研究了通过脂肪酶催化动力学拆分制备仲醇2-戊醇，2-庚醇和2-壬醇的酯对映体（乙酸，丁酸酯，己酸酯和辛酸酯）。通过庚烷（2,3-di- O -methyl-6）的毛细管气相色谱法，对这些百香果类典型的2-烷基酯的同源系列进行了追踪，考察了市售酶制剂催化的酯化和水解反应的转化率和立体化学过程。- ø -叔丁基二）-β环糊精作为手性固定相。开发了一种通过脂肪酶催化的酯化反应制备酯对映体的有效方法：光学纯（R通过用对映选择性南极假丝酵母脂肪酶B（固定化）作为催化剂将外消旋醇酯化，可得到）-2-烷基酯（ee> 99.9％）。随后使用来自假丝酵母的脂肪酶将未反应的醇酯化，得到光学富集的（S）-酯（ee＞ 81.4％）。通过使用硅胶和氧化铝（碱性）的混合物的液体固体色谱法分离产物，得到高化学纯度和产率（＞ 40mol％）。
• Novel Sol-Gel Lipases by Designed Bioimprinting for Continuous-Flow Kinetic Resolutions
  作者：Gabriella Hellner、Zoltán Boros、Anna Tomin、László Poppe

  DOI：10.1002/adsc.201100329

  日期：2011.9

  The bioimprinting effect in sol‐gel immobilization of lipases was studied to develop efficient novel immobilized biocatalysts with significantly improved properties for biotransformations in continuous‐flow systems. The bioimprinting candidates were selected systematically among the substrate mimics already found in the active site of experimental lipase structures. Four lipases (Lipase AK, Lipase PS

  研究了在脂肪酶的溶胶凝胶固定化过程中的生物印迹作用，以开发有效的新型固定化生物催化剂，并显着改善了连续流系统中生物转化的性能。从已经在实验脂肪酶结构的活性位点中发现的底物模拟物中系统地选择生物印迹候选物。使用四乙氧基硅烷（TEOS），苯基三乙氧基硅烷（PhTEOS），辛基三乙氧基硅烷（OcTEOS）和二甲基二乙基硅烷（DMDEOS）的各种组合，通过溶胶凝胶工艺将九种生物印迹候选物固定化为四种脂肪酶（脂肪酶AK，脂肪酶PS，CaLB和CrL）。前体。rac - 1a-e和混合物B：庚烷-2-醇rac - 1f和1-苯乙醇rac - 1g）。除脂肪酶AK以外，最显着的活性增强是通过已经在各种脂肪酶的X射线结构中作为底物模拟物的印迹分子发现的。最好的生物催化剂的合成有用性通过拆分外消旋1-动力学拆分（噻吩-2-基）乙醇（表明外消旋- 1H分批和连续流动系统）。
• Escherichia coli BioH: a highly enantioselective and organic solvent tolerant esterase for kinetic resolution of sec-alcohols
  作者：Bo Wang、Xiaoling Tang、Ji Liu、Hongwei Yu

  DOI：10.1016/j.tetlet.2010.09.135

  日期：2010.12

  Escherichia coli BioH, which is obligatory for biotin synthesis, was found to be an organic solvent tolerant esterase with high enantioselectivity for the kinetic resolution of sec-alcohols using free enzyme powder. With this esterase, a variety of racemic sec-alcohols were efficiently resolved with ee values of up to 99%. (C) 2010 Elsevier Ltd. All rights reserved.
• Efficient Synthesis of Optically Pure 1,1,1-Trifluoro-2-alkanols through Lipase-Catalyzed Acylation in Organic Media
  作者：Hiroki Hamada、Mizuho Shiromoto、Makoto Funahashi、Toshiyuki Itoh、Kaoru Nakamura

  DOI：10.1021/jo951976a

  日期：1996.1.1

  Lipase-catalyzed esterification was successfully utilized for the optical resolution of 1,1,1-trifluoro-2-alkanol 1 when racemic 1 was treated with lipase from Candida antarctica in hexane in the presence of molecular sieves (4 Angstrom) to provide the corresponding (S)-acetate 2 in an optically pure state. Alkanol 1 is known as an important component of liquid crystal compounds which display remarkable ferroelectric liquid crystal (FLC) characteristics. Five types of optically pure alkanols, i.e., 1,1,1-trifluoro-2-octanol (1a), 1,1,1-trifluoro-2-nonanol (1b), 1,1,1-trifluoro-2-decanol (1c), 1,1,1-trifluoro-2-undecanol (1d), and 1,1,1-trifluoro-8-(benzyloxy)-2-octanol (1e), were thus obtained by the lipase-catalyzed acylation.
• A Stereoselective Inverting <i>sec</i>-Alkylsulfatase for the Deracemization of <i>sec</i>-Alcohols
  作者：Markus Schober、Petra Gadler、Tanja Knaus、Heidemarie Kayer、Ruth Birner-Grünberger、Christian Gülly、Peter Macheroux、Ulrike Wagner、Kurt Faber

  DOI：10.1021/ol201635y

  日期：2011.8.19

  A metallo-beta-lactamase-type alkylsulfatase was found to catalyze the enantioselective hydrolysis of sec,alkylsulfates with strict inversion of configuration. This catalytic event, which does not have an analog in chemocatalysis, yields homochiral (S)-configurated alcohols and nonreacted sulfate esters. The latter could be converted into (S)-sec-alcohols as the sole product in up to > 99% ee via a chemoenzymatic deracemization protocol on a preparative scale.