tert-butyl (S)-((S)-1-cyano-2-oxocyclopentyl)(phenyl)methylcarbamate | 1123681-60-6

• 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: tert-butyl (S)-((S)-1-cyano-2-oxocyclopentyl)(phenyl)methylcarbamate
• 英文别名: (S)-2-((S)-tert-butoxycarbonylamino)benzyl-2-cyanocyclopentanone；tert-butyl N-[(S)-[(1S)-1-cyano-2-oxocyclopentyl]-phenylmethyl]carbamate
• CAS: 1123681-60-6
• 化学式: C₁₈H₂₂N₂O₃
• 分子量: 314.384
• InChiKey: HTBPRBXDDBTGPK-YJBOKZPZSA-N

物化性质

• 沸点：
  503.6±45.0 °C(predicted)
• 密度：
  1.16±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  79.2
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  benzaldehyde N-boc imine 、 2-氰基环戊酮 在 N-[3,5-bis(trifluoromethyl)phenyl]-N′-[(1S,2S)-2-[(11bS)-3,5-dihydro-4H-dinaphth[2,1-c:1′,2′-e]azepin-4-yl]cyclohexyl]urea 作用下， 以 甲苯 为溶剂， 反应 1.17h， 以81%的产率得到tert-butyl (S)-((S)-1-cyano-2-oxocyclopentyl)(phenyl)methylcarbamate
  参考文献：
  名称：

  手性双官能尿素催化α-氰基酮与N - Boc醛亚胺的对映和非对映选择性曼尼希型反应

  摘要：

  描述了由手性双官能有机催化剂促进的催化对映选择性亲电曼尼希型反应。在温和的反应条件下，用N -Boc-醛亚胺处理α-氰基酮，得到相应的β-氨基-α-氰基酮，具有非对映选择性（高达syn / anti = 100/0）和出色的对映选择性（高达99） ％ee）。

  DOI：

  10.1002/adsc.200900268

文献信息

• A Carbon Nanotube Confinement Strategy to Implement Homogeneous Asymmetric Catalysis in the Solid Phase
  作者：Kazuki Hashimoto、Naoya Kumagai、Masakatsu Shibasaki

  DOI：10.1002/chem.201406402

  日期：2015.3.9

  recyclable asymmetric catalyst has been developed based on the self‐assembly of a homogeneous catalyst in a fibrous network of multiwalled carbon nanotubes (MWNTs). Dimerization of an amide‐based chiral ligand with a suitable spacer allows for the efficient formation of a heterogeneous catalyst by self‐assembly on addition of Er(OiPr)3. The self‐assembly proceeds in the MWNT fibrous network and small

  基于均相催化剂在多壁碳纳米管（MWNTs）纤维网络中的自组装，已经开发了一种易于回收的不对称催化剂。酰胺基手性配体与合适的间隔基二聚可通过添加Er（O i Pr）3进行自组装，有效地形成非均相催化剂。自组装在MWNT纤维网络中进行，组装好的催化剂的小团簇被限制在MWNT中，产生易于处理的固相催化剂。所得的MWNT受限催化剂在催化不对称曼尼希型反应中表现出良好的催化性能，可以在重复批处理系统和连续流平台中进行。
• Thiourea fused γ-amino alcohol organocatalysts for asymmetric Mannich reaction of β-keto active methylene compounds with imines
  作者：Miku Nomura、Zubeda Begum、Chigusa Seki、Yuko Okuyama、Eunsang Kwon、Koji Uwai、Michio Tokiwa、Suguru Tokiwa、Mitsuhiro Takeshita、Hiroto Nakano

  DOI：10.1039/d2ra08317e

  日期：——

  asymmetric Mannich reaction of β-keto active methylene compounds with imines to afford chiral Mannich products, β-amino keto compounds, with continuous chiral centers, that are versatile synthetic intermediates for deriving various biologically active compounds. In particular, the thiourea fused γ-amino alcohols showed satisfactory catalytic activity in this reaction and afforded chiral Mannich products

  在β-酮活性亚甲基化合物与亚胺的不对称曼尼希反应中检查了新型光学活性硫脲稠合γ-氨基醇的催化功能，以提供手性曼尼希产物，β-氨基酮化合物，具有连续手性中心，是通用的合成中间体用于衍生各种生物活性化合物。特别是，硫脲稠合的γ-氨基醇在此反应中表现出令人满意的催化活性，并以优异的化学产率（高达88%）和立体选择性（高达syn : anti /93 : 7 dr，高达99%）提供手性曼尼希产物。 ee）。
• Enantioselective Direct Mannich Reactions of Cyclic β-Ketoesters Catalyzed by Chiral Phosphine via a Novel Dual-Reagent Catalysis
  作者：Yan-Peng Lou、Chang-Wu Zheng、Ren-Ming Pan、Qiao-Wen Jin、Gang Zhao、Zhong Li

  DOI：10.1021/ol503712m

  日期：2015.2.6

  A combination of an amino acid derived chiral phosphine catalyst and methyl acrylate efficiently catalyzed the direct Mannich reaction of cyclic β-ketoesters and N-Boc-aldimines. The dual-reagent catalysis was presumed to function through the formation of a zwitterion, which catalyzed the reaction with excellent stereocontrol via a hydrogen-bonding assisted chiral ion-pair pathway.
• Linking Structural Dynamics and Functional Diversity in Asymmetric Catalysis
  作者：Akihiro Nojiri、Naoya Kumagai、Masakatsu Shibasaki

  DOI：10.1021/ja900084k

  日期：2009.3.18

  Proteins, the functional molecules in biological systems, are sophisticated chemical devices that have evolved over billions of years. Their function is intimately related to their three-dimensional structure and elegantly regulated by conformational changes through allosteric regulators and a number of reversible or unidirectional post-translational modifications. This functional diversification in response to external stimuli allows for an orderly and timely progression of intra- and extracellular events. In contrast, enantioselective catalysts generally exhibit limited conformational flexibility and thereby exert a single specific function. Exploiting the features of conformationally flexible asymmetric ligands and the variable coordination patterns of rare earth metals, we demonstrate dynamic structural and functional changes of a catalyst in asymmetric catalysis, leading to two distinct reaction outcomes in a single flask.
• Solvent-Dependent Self-Discrimination of Bis(2-hydroxyphenyl)diamides
  作者：Akinobu Matsuzawa、Akihiro Nojiri、Naoya Kumagai、Masakatsu Shibasaki

  DOI：10.1002/chem.201000321

  日期：——

  AbstractSolvent‐dependent, self‐discrimination of diamides is described. Mixing a solution of (R)‐1 a and (S)‐1 a, which are valine‐derived, bis(2‐hydroxyphenyl)diamide‐bearing, multiple hydrogen‐bonding modules, in dichloromethane immediately led to the formation of a thick suspension comprising a 1:1 heterochiral aggregate of 1 a. The solubility of heterochiral 1 a was substantially lower in halogenated solvents than in ethyl acetate. A perusal of racemic crystal structures obtained from chloroform and ethyl acetate revealed a significant difference in the crystal‐packing pattern, which is likely to be the basis for the pronounced difference in solubility. Specific self‐discrimination of 1 a in an ensemble of eight structurally related molecules showcased the specific aggregation through the hydrogen‐bonding network of the bis(2‐hydroxyphenyl)diamide framework. The low solubility of heterochiral 1 a in halogenated solvent was exploited to achieve high stereoselectivity in a catalytic asymmetric reaction by using a low enantiomeric excess sample of 1 a.