(2S,4S)-2-((R)-hydroxy(2-nitrophenyl)methyl)-4-methylcyclohexanone

• 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: (2S,4S)-2-((R)-hydroxy(2-nitrophenyl)methyl)-4-methylcyclohexanone
• 英文别名: (2S,4S,1'R)-2-[(hydroxy)(2-nitrophenyl)methyl]-4-methylcyclohexanone；2-[hydroxy(2-nitrophenyl)methyl]-4-methylcyclohexanone；(2S,4S)-2-((R)-hydroxy(2-nitrophenyl)methyl)-4-methylcyclohexan-1-one；(2S,4S)-2-[(R)-hydroxy-(2-nitrophenyl)methyl]-4-methylcyclohexan-1-one
• 化学式: C₁₄H₁₇NO₄
• 分子量: 263.293
• InChiKey: XONCIQOKGHNBKY-PXWWUCIGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  19
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  83.1
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4-甲基环己酮 、 邻硝基苯甲醛 在 benzyl 3,4,6-tri-O-benzyl-2-deoxy-2-(L-prolylamino)-α-D-glucopyranoside 作用下， 反应 8.0h， 以97%的产率得到(2S,4S)-2-((R)-hydroxy(2-nitrophenyl)methyl)-4-methylcyclohexanone
  参考文献：
  名称：

  单糖衍生物的合成与表征及糖基脯氨酰胺在不对称合成中的应用

  摘要：

  首次合成、分离和使用N-乙酰氨基葡萄糖衍生物甲基2-乙酰氨基-3,4,6-三-O-苄基-2-脱氧-β-D-吡喃葡萄糖苷(9b)的β-异头体用于合成糖基伯胺4b。糖基伯胺 5a、一对单糖衍生物 6a 和 6b 以及所有这些化合物的前体也被合成、分离并通过标准光谱方法进行了充分研究，包括 1H-1H COZY 和 HSQC 等 2D NMR 光谱实验. 然后将糖基伯胺 4a、5a、6a 和 6b 以高产率转化为相应的脯氨酰胺有机催化剂（即 1a、2a、3a 和 3b）。这些糖基脯氨酰胺有机催化剂的催化活性在各种溶剂和不同温度下的不对称羟醛反应中得到证明。

  DOI：

  10.1002/ejoc.201200522

文献信息

• Synthesis and Characterization of Monosaccharide Derivatives and Application of Sugar-Based Prolinamides in Asymmetric Synthesis
  作者：Jyoti Agarwal、Rama Krishna Peddinti

  DOI：10.1002/ejoc.201200522

  日期：2012.11

  were converted into the corresponding prolinamide organocatalysts (i.e., 1a, 2a, 3a, and 3b) in high yields. The catalytic activity of these sugar-based prolinamide organocatalysts was demonstrated in asymmetric aldol reactions in various solvents and at different temperatures. The oraganocatalyst 3a was shown to be an efficient and powerful organocatalyst for the enantioselective aldol reaction of various

  首次合成、分离和使用N-乙酰氨基葡萄糖衍生物甲基2-乙酰氨基-3,4,6-三-O-苄基-2-脱氧-β-D-吡喃葡萄糖苷(9b)的β-异头体用于合成糖基伯胺4b。糖基伯胺 5a、一对单糖衍生物 6a 和 6b 以及所有这些化合物的前体也被合成、分离并通过标准光谱方法进行了充分研究，包括 1H-1H COZY 和 HSQC 等 2D NMR 光谱实验. 然后将糖基伯胺 4a、5a、6a 和 6b 以高产率转化为相应的脯氨酰胺有机催化剂（即 1a、2a、3a 和 3b）。这些糖基脯氨酰胺有机催化剂的催化活性在各种溶剂和不同温度下的不对称羟醛反应中得到证明。
• Organocatalysis with cysteine derivatives: recoverable and cheap chiral catalyst for direct aldol reactions
  作者：Shi Li、Xiangkai Fu、Chuanlong Wu

  DOI：10.1007/s11164-011-0336-5

  日期：2012.1

  Highly enantioselective, recoverable and cheap cysteine derivatives have been developed with improved solubility properties in common, nonpolar organic solvents. The reactions were catalyzed using 5 mol% 1e, and the aldol products could be obtained with up to 99:1 syn/anti ratio and >99% ee. The catalyst could be easily recovered and reused, with only a slight decrease of enantioselectivity observed for five cycles. Catalyst 1e can be efficiently used in large-scale reactions with enantioselectivity being maintained at the same level, which offers great possibility for application in industry. (i) Direct aldol reactions proceeded in 1,2-dichloroethane using simple procedures. (ii) Direct S-acylation of cysteine to give organocatalysts 1a–f can be economically carried out easily in a single step from commercially available sources, with both enantiomers being readily available. (iii) 5 mol% catalyst 1e was sufficient to furnish the aldol products in excellent yields (up to 93%) and enantioselectivities (up to 99%). (iv) Catalyst 1e could be easily recovered and reused, and also can be efficiently used in large-scale reactions with enantioselectivity being maintained at the same level, which offers great possibility for applications in industry.

  开发了一种高度对映选择性、可回收且廉价的半胱氨酸衍生物，其在常见的非极性有机溶剂中具有改善的溶解性特性。反应使用5 mol%催化剂1e进行催化，醛醇产物的syn/anti比率可高达99:1，对映体过量（ee）超过99%。催化剂可以轻松回收并重复使用，经过五个循环后仅观察到轻微的对映选择性降低。催化剂1e可以在大规模反应中有效使用，并维持相同水平的对映选择性，这为其在工业中的应用提供了很大可能性。(i) 直接醛醇反应在1,2-二氯乙烷中通过简单的程序进行。(ii) 半胱氨酸的直接S-酰化以获得有机催化剂1a-f，可以轻松地从商业来源通过一步经济地进行，两种对映体均易于获得。(iii) 5 mol%催化剂1e足以以优异的产率（高达93%）和对映选择性（高达99%）提供醛醇产物。(iv) 催化剂1e可以轻松回收和重复使用，并且可以在大规模反应中有效使用，保持相同水平的对映选择性，这为其在工业中的应用提供了极大的可能性。
• Facile evolution of asymmetric organocatalysts in water assisted by surfactant Brønsted acids
  作者：Sanzhong Luo、Hui Xu、Jiuyuan Li、Long Zhang、Xueling Mi、Xiaoxi Zheng、Jin-Pei Cheng

  DOI：10.1016/j.tet.2007.08.096

  日期：2007.11

  benzenesulfonic acid (DBSA) leads to highly effective and selective organocatalysts in water. The in situ generated catalysts catalyze highly stereoselective desymmetrization of prochiral ketones via direct aldol reactions (up to >16:1 dr, >99% ee) in water using micelle as reaction media. The current strategy was also applied in asymmetric Michael addition leading to a catalytic system with good activity

  手性胺和表面活性剂布朗斯台德酸（例如对十二烷基苯磺酸（DBSA））的简单混合可在水中产生高效和选择性的有机催化剂。原位生成的催化剂使用胶束作为反应介质，通过在水中的直接羟醛反应（高达> 16：1 dr，> 99％ee）催化前手性酮的高度立体选择性去对称化。当前的策略还用于不对称迈克尔加成中，从而产生具有良好活性和立体选择性的催化体系。
• Highly Enantio- and Diastereoselective Organocatalytic Desymmetrization of Prochiral Cyclohexanones by Simple Direct Aldol Reaction Catalyzed by Proline
  作者：Xavier Companyó、Guillem Valero、Luis Crovetto、Albert Moyano、Ramon Rios

  DOI：10.1002/chem.200900488

  日期：2009.7.6

  Panacea for aldol desymmetrizations: We describe an easy entry for the desymmetrization of 4‐substituted‐cyclohexanones catalyzed by proline, using as cocatalysts different hydrogen‐bonding donors (see scheme), which dramatically improves the catalytic efficiency of proline in desymmetrization reactions.

  醛醇缩合不对称的灵丹妙药：我们描述了脯氨酸催化的4取代环己酮的不对称化的简便方法，它使用不同的氢键供体作为助催化剂（参见方案），从而显着提高了脯氨酸在不对称化反应中的催化效率。
• One-step, efficient synthesis of combined threonine–surfactant organocatalysts for the highly enantioselective direct aldol reactions of cyclic ketones with aromatic aldehydes in the presence of water
  作者：Chuanlong Wu、Xiangkai Fu、Xuebing Ma、Shi Li

  DOI：10.1016/j.tetasy.2010.09.006

  日期：2010.10

  In this work a new class of organocatalysts have been designed and synthesized in one step by a rational combination of threonine with acyl chlorides at room temperature in trifluoroacetic acid to make a series of novel combined threonine-surfactant organocatalysts readily available on a large-scale No protecting groups or chromatographic techniques are Involved in the procedures while certain combined threonine-surfactant organocatalysts mediate the direct aldol reactions of cyclic ketones with aromatic aldehydes to provide the aldol products in good yields with enantioselectivities of up to 99% (C) 2010 Elsevier Ltd All rights reserved