methyl (2R,3S)-3-cyclohexyl-2,3-dihydroxypropanoate | 1020739-06-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl (2R,3S)-3-cyclohexyl-2,3-dihydroxypropanoate
• CAS: 1020739-06-3
• 化学式: C₁₀H₁₈O₄
• 分子量: 202.251
• InChiKey: KMSGVUBIMSWNRT-DTWKUNHWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  66.8
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  乙烯基环己烷 在 RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) sodium periodate 、 cerium(III) chloride 作用下， 以 二氯甲烷 、 乙酸乙酯 、 乙腈 为溶剂， 反应 7.0h， 生成 methyl (2R,3S)-3-cyclohexyl-2,3-dihydroxypropanoate
  参考文献：
  名称：

  Ruthenium-Catalyzed Tandem Olefin Metathesis−Oxidations

  摘要：

  The utility of Grubbs' 2nd generation metathesis catalyst has been expanded by the development of two tandem olefin metathesis/oxidation protocols. These ruthenium-catalyzed processes provide cis-diols or r-hydroxy ketones from simple olefinic starting materials.

  DOI：

  10.1021/ol061837n

文献信息

• The acid accelerated ruthenium-catalysed dihydroxylation. Scope and limitations
  作者：Bernd Plietker、Meike Niggemann、Anja Pollrich

  DOI：10.1039/b316546a

  日期：——

  Recently, we discovered a significant rate acceleration in RuO4-catalysed dihydroxylations of olefins by addition of Brönsted-acids resulting in a reduction of the catalyst loading to only 0.5 mol%. The present paper gives a full account on the optimisation protocol that led to the discovery of the beneficial influence of protic acids. A strong focus is set on the detailed description of the influence of different reaction parameters on both reactivity and selectivity. In the second part an intense investigation of scope and limitations will be presented. The results provided in this manuscript might lead to a deeper understanding of competing processes that influence the selectivity in RuO4-catalysed dihydroxylations.

  最近，我们发现在烯烃双羟基化反应中，通过添加布朗斯台德酸，RuO4催化的反应速率显著加快，并且催化剂负载量降低至仅0.5摩尔%。本文详细阐述了优化程序，揭示了质子酸的有益影响，并着重描述了不同反应参数对反应活性和选择性的影响。在第二部分，将展示对范围和限制的深入研究。本文提供的结果可能有助于更深入地理解影响RuO4催化双羟基化反应选择性的竞争过程。
• Diastereoselective Ru-Catalyzed Cross-Metathesis−Dihydroxylation Sequence. An Efficient Approach toward Enantiomerically Enriched <i>syn</i>-Diols
  作者：N. Matthias Neisius、Bernd Plietker

  DOI：10.1021/jo800145x

  日期：2008.4.1

  metathesis reactions allows for a stereoselective subsequent RuO4-catalyzed dihydroxylation. The sequence is concluded by an unusual kinetic resolution of the diastereomeric diols obtained in the oxidation reaction. As a consequence a variety of structurally diverse enantiomerically enriched diols are obtained. To the best of our knowledge the results summarized in this paper represent the first highly efficient

  在过去的几年中，顺序催化已经发展成为一个有力的概念，可以在有机合成中更有效地使用催化活性的昂贵过渡金属。在本文中，我们介绍了各种烯烃与手性辅助取代的丙烯酰胺的立体选择性交叉复分解-二羟基化反应。在复分解反应中引入的手性信息（即辅助信息）可用于后续的立体选择性RuO 4。-催化的二羟基化。该序列由氧化反应中获得的非对映体二醇的异常动力学拆分而得出。结果，获得了多种结构上不同的对映体富集的二醇。据我们所知，本文总结的结果代表了第一个高效的非对映选择性RuO 4催化氧化。
• Dinuclear Zinc–ProPhenol-Catalyzed Enantioselective α-Hydroxyacetate Aldol Reaction with Activated Ester Equivalents
  作者：Barry M. Trost、David J. Michaelis、Mihai I. Truica

  DOI：10.1021/ol402081p

  日期：2013.9.6

  An enantioselective alpha-hydroxyacetate aldol reaction that employs N-acetyl pyrroles as activated ester equivalents and generates syn 1,2-diols in good yield and diastereoselectivity is reported. This dinuclear zinc-ProPhenol-catalyzed transformation proceeds with high enantioselectivity with a wide variety of substrates including aryl, alyl, and alkenyl aldehydes. The resulting alpha,beta-dihydroxy activated esters are versatile intermediates for the synthesis of a variety of carboxylic acid derivatives including amides, esters, and unsymmetrical ketones.