O-benzoyl-trans-4-hydroxy-L-proline | 54665-21-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: O-benzoyl-trans-4-hydroxy-L-proline
• 英文别名: (4R)-4-(Benzoyloxy)-L-proline；(2S,4R)-4-benzoyloxypyrrolidine-2-carboxylic acid
• CAS: 54665-21-3
• 化学式: C₁₂H₁₃NO₄
• 分子量: 235.24
• InChiKey: SNGFONXAAYKVPO-ZJUUUORDSA-N

物化性质

• 沸点：
  415.4±45.0 °C(Predicted)
• 密度：
  1.33±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.1
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  75.6
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  O-benzoyl-trans-4-hydroxy-L-proline 在 sodium tungstate 四乙基氯化铵 、 双氧水 、 potassium carbonate 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 12.0h， 以47%的产率得到(4R)-4-(benzoyloxy)-1-pyrroline N-oxide
  参考文献：
  名称：

  N-烷基-α-氨基酸脱羧氧化反应区域选择性合成硝酮及其在1-氮杂双环生物碱合成中的应用

  摘要：

  在相转移条件下用 30% H2O2 溶液钨酸盐催化氧化 N-烷基-α-氨基酸，区域选择性地以良好的产率得到硝酮。使用该方法，实现了（R）-和（S）-4-（叔丁基二甲基甲硅烷氧基）-1-吡咯啉N-氧化物（（R）-17a和（S）-17a）的立体发散合成。此外，(R)-和(S)-3-(叔丁基二甲基甲硅烷氧基)-1-吡咯啉N-氧化物((R)-45和(S)-45)是通过相应手性吡咯烷的催化氧化制备的区域选择性方式。这些手性环状硝酮 17 和 45 是合成光学活性氮杂环的通用中间体，因为可以很容易地将碳亲核试剂立体选择性加成到这些手性硝酮上。通常，ZnI2 介导的乙烯酮叔丁基二甲基甲硅烷基甲基缩醛 (29a) 与 (R)-17a 的加成得到顺式加合物，(2R,4R)-[1,4-双(叔丁基二甲基甲硅烷氧基)吡咯烷-2-基]乙酸甲酯(cis-30)。相比之下，将乙炔锂 34 添加到硝酮 (R)-17a 中得到

  DOI：

  10.1246/bcsj.72.2737
• 作为产物：
  描述：

  (2s,4r)-1,2-二苄氧羰基-4-羟基吡咯烷 在 palladium on activated charcoal 4-二甲氨基吡啶 、 氢气 、 溶剂黄146 作用下， 以 吡啶 、 甲醇 为溶剂， 反应 4.0h， 生成 O-benzoyl-trans-4-hydroxy-L-proline
  参考文献：
  名称：

  N-烷基-α-氨基酸脱羧氧化反应区域选择性合成硝酮及其在1-氮杂双环生物碱合成中的应用

  摘要：

  在相转移条件下用 30% H2O2 溶液钨酸盐催化氧化 N-烷基-α-氨基酸，区域选择性地以良好的产率得到硝酮。使用该方法，实现了（R）-和（S）-4-（叔丁基二甲基甲硅烷氧基）-1-吡咯啉N-氧化物（（R）-17a和（S）-17a）的立体发散合成。此外，(R)-和(S)-3-(叔丁基二甲基甲硅烷氧基)-1-吡咯啉N-氧化物((R)-45和(S)-45)是通过相应手性吡咯烷的催化氧化制备的区域选择性方式。这些手性环状硝酮 17 和 45 是合成光学活性氮杂环的通用中间体，因为可以很容易地将碳亲核试剂立体选择性加成到这些手性硝酮上。通常，ZnI2 介导的乙烯酮叔丁基二甲基甲硅烷基甲基缩醛 (29a) 与 (R)-17a 的加成得到顺式加合物，(2R,4R)-[1,4-双(叔丁基二甲基甲硅烷氧基)吡咯烷-2-基]乙酸甲酯(cis-30)。相比之下，将乙炔锂 34 添加到硝酮 (R)-17a 中得到

  DOI：

  10.1246/bcsj.72.2737
• 作为试剂：
  描述：

  Ethyl 1-benzyl-2-(4-methoxyphenyl)-4,5-dioxopyrrole-3-carboxylate 、 丙酮 在 水 、 O-benzoyl-trans-4-hydroxy-L-proline 作用下， 以 二甲基亚砜 为溶剂， 反应 72.0h， 以83%的产率得到ethyl (+)-1-benzyl-4-hydroxy-2-(4-methoxyphenyl)-5-oxo-4-(2-oxopropyl)-4,5-dihydro-1H-pyrrole-3-carboxylate
  参考文献：
  名称：

  Organocatalyzed enantioselective aldol reaction of 1H-pyrrole-2,3-diones

  摘要：

  The enantioselective cross aldol reaction of 1-benzyl 4,5-dioxo-2-aryl-4,5-dihydro-1H-pyrrole-3-carboxylates and ketones was studied with praline derivatives or cinchona alkaloid-derived primary amines as the catalysts for the first time. trans-4-Benzoyloxy-L-proline (15) was found to be the best catalyst for acyclic ketones. For cyclohexanone, the best results were achieved with 9-deoxy-9-epi-aminoquinine (18) as the catalyst in the presence of racemic 1,1'-binaphthyl-2,2'-diyl hydrogen phosphate (19) as the cocatalyst. Using these protocols, 3-alkyl-3-hydroxy-1H-pyrrol-2(3H)-one derivatives were obtained in excellent yields and good to high ee values (up to 94% ee). (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2011.11.056

文献信息

• New Simple Hydrophobic Proline Derivatives as Highly Active and Stereoselective Catalysts for the Direct Asymmetric Aldol Reaction in Aqueous Medium
  作者：Francesco Giacalone、Michelangelo Gruttadauria、Paolo Lo Meo、Serena Riela、Renato Noto

  DOI：10.1002/adsc.200800555

  日期：——

  different hydrophobic properties of the acyl group were easily synthesized and used as catalysts in the direct asymmetric aldol reaction between cyclic ketones (cyclohexanone and cyclopentanone) and several substituted benzaldehydes. Reactions were carried out using water, this being the best reaction medium examined. Screening of these catalysts showed that compounds bearing the most hydrophobic acyl

  容易合成具有不同疏水性的酰基的新的4-取代的酰氧基脯氨酸衍生物，并将其用作环酮（环己酮和环戊酮）与几种取代的苯甲醛之间的直接不对称羟醛反应的催化剂。使用水进行反应，这是所检验的最佳反应介质。对这些催化剂的筛选表明，带有最多疏水性酰基链的化合物[4-苯基丁酸酯和4-（吡啶-1-基）丁酸酯]提供了更好的结果。后一种催化剂在室温下仅以2摩尔％的比例成功使用，无需添加添加剂，即可获得具有出色立体选择性的羟醛产物。这些结果表明脯氨酸部分在4-位上带有适当的简单疏水取代基的衍生化可以提供高活性和立体选择性的催化剂，而无需在分子中另外的手性主链。最后，提供了在水存在下观察到的立体选择性的解释。
• Synge, Biochemical Journal, 1939, vol. 33, p. 1915
  作者：Synge

  DOI：——

  日期：——
• Dual stereocontrol in aldol reactions catalysed by hydroxyproline derivatives in the presence of a large amount of water
  作者：András A. Gurka、Kornél Szőri、Mihály Bartók、Gábor London

  DOI：10.1016/j.tetasy.2016.08.009

  日期：2016.10

  Parameters influencing dual stereocontrol in aldol reactions of water miscible acetone with aromatic aldehydes in the presence of a large amount of water using hydroxyproline based catalysts were studied. Stereocontrol was achieved by changing the acidity and basicity of the reaction media by the addition of achiral salts in the presence of a single chiral catalyst. Under acidic conditions (NH4Cl salt) the (R)-aldol product was formed in excess while basic aqueous media (carboxylate salts) led to the enrichment of the (S)-enantiomer. Reaction conditions under which the reaction is feasible were optimised and the effect of the structure of the hydroxyproline-based catalysts was investigated. The results show that the formation of a biphasic micellar system and the presence of an appropriate catalyst are both crucial for the reaction to occur. Although the catalyst structure influenced the formation and stabilisation of the micellar system to a large extent, its effect on the enantioselectivities were found to be less pronounced. (C) 2016 Elsevier Ltd. All rights reserved.
• Tuning the sense of product stereochemistry in aldol reactions of acetone and aromatic aldehydes in the presence of water with a single chiral catalyst
  作者：András A. Gurka、Kornél Szőri、György Szőllősi、Mihály Bartók、Gábor London

  DOI：10.1016/j.tetlet.2015.11.051

  日期：2015.12

  We report the aldol addition of acetone to aromatic aldehydes in the presence of a large amount of water where the stereochemical outcome of the reactions can be tuned with achiral salt additives using a single proline-derived catalyst. Depending on the nature of the added salt the (R) and (S) enriched products could be obtained. In the reaction of 2-nitrobenzaldehyde with acetone, NaOAc promoted the formation of the (S)-enantiomer (20% ee) while using NH4Cl the (R)-enantiomer was obtained in excess (58% ee). A similar inversion was observed for several other aromatic aldehydes. (C) 2015 Elsevier Ltd. All rights reserved.