(R,S)-2-(1-phenylethylcarbamoyl)pyrrolidine-1-carboxylic acid benzyl ester | 854139-32-5

• 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: (R,S)-2-(1-phenylethylcarbamoyl)pyrrolidine-1-carboxylic acid benzyl ester
• 英文别名: benzyl (2S)-2-[[(1R)-1-phenylethyl]carbamoyl]pyrrolidine-1-carboxylate
• CAS: 854139-32-5
• 化学式: C₂₁H₂₄N₂O₃
• 分子量: 352.433
• InChiKey: DLCCUHZGZIOGSR-APWZRJJASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  26
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  58.6
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (R,S)-2-(1-phenylethylcarbamoyl)pyrrolidine-1-carboxylic acid benzyl ester 在 palladium on activated charcoal 氢气 、 溶剂黄146 作用下， 以 甲醇 、 水 为溶剂， 反应 1.0h， 生成 (2S)-1-methyl-N-[(1R)-1-phenylethyl]pyrrolidine-2-carboxamide
  参考文献：
  名称：

  Asymmetric Hydrogenation Catalyzed by the (Achiral Base)bis(dimethylglyoximato)cobalt(II)–Chiral Cocatalyst System. The Preparation of a New Type of Chiral Cocatalyst and Its Application to the Asymmetric Hydrogenation of MethylN-(Acetylamino)acrylate and Benzil

  摘要：

  在非手性基团配位的双(二甲基乙二肟)钴(II)–手性共催化剂体系中，作为一种新型的手性共催化剂，制备了在α-或β-碳上含有酰胺基的三级胺，并使用它们进行了不对称氢化反应的研究。通过使用N-[(2S,3S)-2-乙酰氧基-3-二甲基氨基-3-苯基丙酰基]-(R)-α-甲基苯乙胺，光学产率达到了34.5%的ee值；这是迄今为止在该体系下对甲基N-(乙酰氨基)丙烯酸酯进行不对称氢化反应中获得的最高值。当N-[N,N-二甲基-(S)-苯丙氨酰]-α-甲基苯乙胺的α-甲基苯乙胺部分发生构型改变时，甲基N-(乙酰氨基)丙烯酸酯的氢化反应中的立体选择性发生了反转，而通过构型改变对苯偶酰的氢化反应中的立体选择性没有发生反转。从这些事实可以推断，手性氨基酸酰胺与甲基N-(乙酰氨基)丙烯酸酯之间的酰胺基氢键可能作为一种吸引力，增强不对称氢化反应的立体选择性。

  DOI：

  10.1246/bcsj.54.2136
• 作为产物：
  描述：

  R(+)-alpha-甲基苄胺 、 N-苄氧羰基-L-脯氨酸 在 N-甲基吗啉 、 氯甲酸乙酯 作用下， 以 乙酸乙酯 为溶剂， 反应 15.0h， 以98%的产率得到(R,S)-2-(1-phenylethylcarbamoyl)pyrrolidine-1-carboxylic acid benzyl ester
  参考文献：
  名称：

  衍生自l-脯氨酸的新型手性偶氮盐（N-杂环卡宾的前体）的合成与表征

  摘要：

  摘要 已经开发了用于制备衍生自1-脯氨酸的N-杂环卡宾的前体的七种手性氮杂鎓和五种官能化的手性氮杂鎓盐的短而灵活的方法。获得了中等至良好的总产量。分离出一些NHC二聚体和硫酮。还报道了两种[Rh-NHC]配合物的X射线晶体结构测定。 已经开发了用于制备衍生自1-脯氨酸的N-杂环卡宾的前体的七种手性氮杂鎓和五种官能化的手性氮杂鎓盐的短而灵活的方法。获得了中等至良好的总产量。分离出一些NHC二聚体和硫酮。还报道了两种[Rh-NHC]配合物的X射线晶体结构测定。

  DOI：

  10.1055/s-0033-1340215

文献信息

• Small organic molecule catalyzed enantioselective direct aldol reaction in water
  作者：Swapandeep Singh Chimni、Dinesh Mahajan

  DOI：10.1016/j.tetasy.2006.07.016

  日期：2006.8

  Protonated pyrrolidine based small organic molecules have been designed and evaluated for the asymmetric direct aldol reaction in water. The designed organocatalysts are multifunctional in nature and exploit the combined effect of hydrogen bonding and hydrophobic interactions for enantioselective catalysis in water. As a result a unique direct asymmetric aldol reaction in water catalyzed by a small organic molecule having an amide linkage has been developed. The developed catalyst affords chiral beta-hydroxyketones in good yields (93%) and enantioselectivities (upto 62%) in water. (c) 2006 Elsevier Ltd. All rights reserved.
• An atom efficient and solvent-free synthesis of structurally diverse amides using microwaves
  作者：Edith Gelens、Luc Smeets、Leo A.J.M. Sliedregt、Bart J. van Steen、Chris G. Kruse、Rob Leurs、Romano V.A. Orru

  DOI：10.1016/j.tetlet.2005.03.146

  日期：2005.5

  An array of structurally diverse amides was synthesized efficiently by combining (primary and secondary) amines and carboxylic acids in one-pot under solvent-free microwave (MW) conditions. In most cases, no racemization was observed with optically active inputs and chiral amides were obtained in high ee or de. (c) 2005 Elsevier Ltd. All rights reserved.
• Asymmetric Hydrogenation Catalyzed by the (Achiral Base)bis(dimethylglyoximato)cobalt(II)–Chiral Cocatalyst System. The Preparation of a New Type of Chiral Cocatalyst and Its Application to the Asymmetric Hydrogenation of Methyl<i>N</i>-(Acetylamino)acrylate and Benzil
  作者：Seiji Takeuchi、Yoshiaki Ohgo

  DOI：10.1246/bcsj.54.2136

  日期：1981.7

  As a new type of chiral cocatalyst in the achiral base-coordinated bis(dimethylglyoximato)cobalt(II)–chiral cocatalyst system, tertiary amines with an amide group at α- or β-carbon were prepared, and asymmetric hydrogenation was examined by using them. The optical yield reached 34.5% enantiomeric excess(ee) by using N-[(2S,3S)-2-acetoxy-3-dimetnylamino-3-phenylpropionyl]-(R)-α-methylbenzylamine; this is the highest value attained so far in the asymmetric hydrogenation of methyl N-(acetylamino)acrylate with this system. The enantioselectivity in the hydrogenation of methyl N-(acetylamino)acrylate was reversed with a configurational alteration of the α-methylbenzylamine moiety of N-[N,N-dimethyl-(S)-phenylalanyl]-α-methylbenzylamine, while it was not reversed in the hydrogenation of benzil by the configurational alteration. From these facts, it is deduced that the hydrogen bond between amide groups of the chiral amino carboxamides and methyl N-(acetylamino)acrylate may act as an attractive force to enhance the enantioselectivity of the asymmetric hydrogenation.

  在非手性基团配位的双(二甲基乙二肟)钴(II)–手性共催化剂体系中，作为一种新型的手性共催化剂，制备了在α-或β-碳上含有酰胺基的三级胺，并使用它们进行了不对称氢化反应的研究。通过使用N-[(2S,3S)-2-乙酰氧基-3-二甲基氨基-3-苯基丙酰基]-(R)-α-甲基苯乙胺，光学产率达到了34.5%的ee值；这是迄今为止在该体系下对甲基N-(乙酰氨基)丙烯酸酯进行不对称氢化反应中获得的最高值。当N-[N,N-二甲基-(S)-苯丙氨酰]-α-甲基苯乙胺的α-甲基苯乙胺部分发生构型改变时，甲基N-(乙酰氨基)丙烯酸酯的氢化反应中的立体选择性发生了反转，而通过构型改变对苯偶酰的氢化反应中的立体选择性没有发生反转。从这些事实可以推断，手性氨基酸酰胺与甲基N-(乙酰氨基)丙烯酸酯之间的酰胺基氢键可能作为一种吸引力，增强不对称氢化反应的立体选择性。
• Synthesis and Characterization of New Chiral Azolinium Salts, Precursors to N-Heterocyclic Carbenes, Derived from l-Proline
  作者：Giang Vo-Thanh、Amélia Thomasset、Lucie Bouchardy、Chloée Bournaud、Régis Guillot、Martial Toffano

  DOI：10.1055/s-0033-1340215

  日期：——

  seven chiral azolinium and five functionalized chiral azolinium salts, precursors to N-heterocyclic carbenes, derived from l-proline has been developed. Moderate to good overall yields were obtained. Some NHC dimers and thiones were isolated. X-ray crystal structure determinations of two [Rh-NHC] complexes were also reported. A short and flexible procedure for the preparation of seven chiral azolinium

  摘要 已经开发了用于制备衍生自1-脯氨酸的N-杂环卡宾的前体的七种手性氮杂鎓和五种官能化的手性氮杂鎓盐的短而灵活的方法。获得了中等至良好的总产量。分离出一些NHC二聚体和硫酮。还报道了两种[Rh-NHC]配合物的X射线晶体结构测定。 已经开发了用于制备衍生自1-脯氨酸的N-杂环卡宾的前体的七种手性氮杂鎓和五种官能化的手性氮杂鎓盐的短而灵活的方法。获得了中等至良好的总产量。分离出一些NHC二聚体和硫酮。还报道了两种[Rh-NHC]配合物的X射线晶体结构测定。