[2R,3S]-(+)-hydroxy-2-methyl-1-phenyl-1-butanone | 283151-90-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: [2R,3S]-(+)-hydroxy-2-methyl-1-phenyl-1-butanone
• 英文别名: (2R,3S)-3-hydroxy-2-methyl-1-phenylbutanone；(2R,3S)-3-hydroxy-2-methyl-1-phenylbutan-1-one
• CAS: 283151-90-6
• 化学式: C₁₁H₁₄O₂
• 分子量: 178.231
• InChiKey: LZWQBCUNLJNOPL-BDAKNGLRSA-N

物化性质

• 沸点：
  301.7±25.0 °C(Predicted)
• 密度：
  1.056±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  [2R,3S]-(+)-hydroxy-2-methyl-1-phenyl-1-butanone 在 sodium tetrahydroborate 、 二乙基甲氧基硼烷 作用下， 以 四氢呋喃 、 甲醇 、 苯 为溶剂， 反应 15.0h， 生成 (2R,4R,5S,6R)-4,5-Dimethyl-2-(4-nitro-phenyl)-6-phenyl-[1,3]dioxane
  参考文献：
  名称：

  Stereo- and Regioselectivity of Reactions of Siliranes with Aldehydes and Related Substrates

  摘要：

  Siliranes undergo stereoselective and regioselective insertions of benzaldehyde to provide oxasi-lacyclopentane products. The thermal reaction (>100 degrees C) leads to more decomposition and side products, whereas the catalyzed variant (t-BuOK, (25 degrees C) proceeds more cleanly with a high degree of inversion (>95%). Treatment of siliranes with enolizable aldehydes leads to silyl enol ethers. The reaction of a silirane at high temperatures with an imine leads to reductive dimerization, presumably by way of intermediate-free silylene. The mechanism for the catalyzed insertion of benzaldehyde is discussed.

  DOI：

  10.1021/jo970263k
• 作为产物：
  描述：

  3-phenyl-cis-4,5-dimethyl-Δ²-isoxazoline 在 镍 氢气 、 硼酸 作用下， 以 甲醇 、 水 为溶剂， 反应 2.5h， 以73%的产率得到[2R,3S]-(+)-hydroxy-2-methyl-1-phenyl-1-butanone
  参考文献：
  名称：

  .DELTA.2-异恶唑啉的减少。3. 雷尼镍催化β-羟基酮的形成

  摘要：

  确定最佳条件转化 d'isoxazolines-2 en β-hydroxycetones en utilisant un catalyseur Ni de Raney, l'acide borique, un melange 5/1 甲醇/eau et l'hydrogene Gazeux

  DOI：

  10.1021/ja00356a021

文献信息

• Synthesis of Valuable Chiral Intermediates by Isolated Ketoreductases: Application in the Synthesis of α-Alkyl-β-hydroxy Ketones and 1,3-Diols
  作者：Dimitris Kalaitzakis、J. David Rozzell、Ioulia Smonou、Spiros Kambourakis

  DOI：10.1002/adsc.200606185

  日期：2006.9

  and in two examples both ketones were reduced to the 1,3-diol. By replacing the α-alkyl substituent with the OAc group, 1-keto-2,3-diols, as well as 1,2,3-triols were synthesized in high optical purities. These enzymatic reactions provide a simple, highly stereoselective and quantitative method for the synthesis of different diastereomers of valuable chiral synthons from non-chiral, easily accessible

  描述了通过使用可商购的酮还原酶（KRED）将α-取代的1，3-二酮区域和立体选择性还原为相应的β-酮醇或1，3-二醇。在一个或两个酶促还原步骤中，许多α-单烷基或二烷基取代的对称及非对称二酮的高光学纯度和化学收率得到降低。在大多数情况下，通过使用不同的酶来合成四种可能的α-烷基-β-酮醇非对映异构体中的两个甚至三个，并且在两个实例中，两种酮均还原为1,3-二醇。通过用OAc基团取代α-烷基取代基，可以以高光学纯度合成1-酮-2,3-二醇以及1,2,3-三醇。这些酶促反应提供了一种简单，
• Asymmetric Aldol Reactions Using (<i>S</i>,<i>S</i>)-(<i>+</i>)-Pseudoephedrine-Based Amides:  Stereoselective Synthesis of α-Methyl-β-hydroxy Acids, Esters, Ketones, and 1,3-Syn and 1,3-Anti Diols
  作者：Jose L. Vicario、Dolores Badía、Esther Domínguez、Mónica Rodríguez、Luisa Carrillo

  DOI：10.1021/jo000035h

  日期：2000.6.1

  reactions is reported. The reaction of (S, S)-(+)-pseudoephedrine-derived propionamide enolates with several aldehydes yielded exclusively one of the four possible diastereomers in good yields, although transmetalation of the firstly generated lithium enolate with a zirconium(II) salt, prior to the addition of the aldehyde, is necessary in order to achieve high syn selectivity. The so-formed syn-alpha-methyl-beta-hydroxy

  报道了进行立体选择性醛醇缩合反应的非常有效的方法。（S，S）-（+）-伪麻黄碱衍生的丙酰胺烯醇化物与几种醛的反应仅以良好的收率仅产生了四种可能的非对映异构体之一，尽管先生成的烯醇酸锂与锆（​​II）盐进行了重金属化。为了获得高的顺式选择性，添加醛是必需的。如此形成的顺-α-甲基-β-羟基酰胺被转化为其他有价值的手性非外消旋合成子，例如α-甲基-β-羟基酸，酯和酮。最后，已经开发了一种立体控制的还原程序，该程序从如此获得的α-甲基-β-羟基酮开始，可以合成1,3-syn-或1,3-抗-α-甲基-1，
• Highly Diastereoselective Aldol Synthesis from<i>α</i>-Iodo Ketones in Aqueous Media
  作者：Ikuya Shibata、Masatsugu Kawasaki、Makoto Yasuda、Akio Baba

  DOI：10.1246/cl.1999.689

  日期：1999.7

  Highly diastereoselective aldol synthesis from α-iodo ketones was promoted under aqueous conditions by a distannane system, (n-Bu3Sn)2, n-Bu2SnF2 and HMPA. Aqueous solutions of acetaldehyde, formaldehyde and pivaraldehyde were applicable to give β-hydroxy ketones effectively.

  在水性条件下，二锡烷系统、(n-Bu3Sn)2、n-Bu2SnF2 和 HMPA 促进了由 α-碘酮合成的高度非对映选择性羟醛。乙醛、甲醛和新戊醛的水溶液适用于有效地得到β-羟基酮。
• Chirality and Fragrance Chemistry:  Stereoisomers of the Commercial Chiral Odorants Muguesia and Pamplefleur
  作者：Agnese Abate、Elisabetta Brenna、Claudio Fuganti、Francesco G. Gatti、Tommaso Giovenzana、Luciana Malpezzi、Stefano Serra

  DOI：10.1021/jo048445j

  日期：2005.2.1

  The work describes the enzyme-mediated preparation and the odor evaluation of the single stereoisomers of the commercial odorants Muguesia and Pamplefleur. The synthetic approach to Muguesia stereoisomers helped to clear the assignment of the relative configuration of intermediate diols 5. The odor response of Pamplefleur isomers was found to be rather unusual. No stereoisomer prevailed, but each one

  这项工作描述了商业气味剂Muguesia和Pamplefleur的单一立体异构体的酶介导的制备和气味评估。Muguesia立体异构体的合成方法有助于清除中间二醇5的相对构型的分配。发现潘普洛夫尔异构体的气味响应是非常不寻常的。没有立体异构体占主导地位，但每个异构体在确定最终混合物的气味感方面起着确定的作用。
• A chemo-enzymatic route to diastereoisomers of 2-methyl-1-phenyl-1,3-butanediol: the dual role of microorganisms
  作者：K. Ahmad、S.C. Taneja、A.P. Singh、N. Anand、M.A. Qurishi、S. Koul、G.N. Qazi

  DOI：10.1016/j.tet.2006.10.045

  日期：2007.1

  Diastereoisomers (1S,2R,3S)-, (1R,2R,3S)-, (IR,2S,3S)- and (1S,2S,3S)-2-methyl-1-phenyl-1,3-butanediols were prepared by simple and convenient strategies using two different chemo-enzymatic approaches for the reduction of racemic 2-methyl-1-phenyl-1, 3-butanedione, both involving in situ racemization. The first method comprised a one-pot microbial reduction coupled with a chemical reduction, while in the second method, stepwise chemo-enzymatic reductions were performed. (c) 2006 Elsevier Ltd. All rights reserved.