(R)-2-chloro-1-(thiophen-2-yl)ethan-1-ol | 913289-18-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: (R)-2-chloro-1-(thiophen-2-yl)ethan-1-ol
• 英文别名: (1R)-2-chloro-1-thiophen-2-ylethanol
• CAS: 913289-18-6
• 化学式: C₆H₇ClOS
• 分子量: 162.64
• InChiKey: KBXQOVVOIBVNLG-YFKPBYRVSA-N

物化性质

• 沸点：
  273.4±25.0 °C(Predicted)
• 密度：
  1.340±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  48.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-2-chloro-1-(thiophen-2-yl)ethan-1-ol 在 氢氧化钾 、 potassium tert-butylate 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 为溶剂， 反应 3.25h， 生成 (S)-2-Methylamino-1-thiophen-2-yl-ethanol
  参考文献：
  名称：

  Solvent and in situ catalyst preparation impacts upon Noyori reductions of aryl-chloromethyl ketones: application to syntheses of chiral 2-amino-1-aryl-ethanols

  摘要：

  As part of medicinal chemistry efforts we found it necessary to develop general syntheses of highly enantiomerically enriched 1-aryl-2-chloroethanols and 1-aryl-2-methylaminoethanols. A survey of literature methods suggested that a truly general approach had not yet been reported, encouraging us to undertake the development of such a methodology. This study describes the design, development, and reduction to practice of a general synthesis of chiral 1-aryl-2-chloroethanols and the transformation of these entities to highly enantiomerically enriched 1-aryl-2-methylaminoethanols. Of particular importance were observations of the impact of solvent and the method of catalyst preparation on the yield and enantiomerical excess of chlorohydrins prepared via Noyori transfer hydrogenations of aryl-chloromethyl ketones. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2006.07.017
• 作为产物：
  描述：

  2-氯乙酰噻吩 在 bis(1,5-cyclooctadiene)diiridium(I) dichloride 、 氢气 、 potassium carbonate 、 C₃₉H₄₀N₃OP 作用下， 以 乙醇 为溶剂， 30.0 ℃ 、6.0 MPa 条件下， 以75.8 %的产率得到(R)-2-chloro-1-(thiophen-2-yl)ethan-1-ol
  参考文献：
  名称：

  利用金鸡纳生物碱衍生的 NNP 配体 Ir 催化 α-卤代酮不对称氢化生产 (R)- 和 (S)- 卤代醇

  摘要：

  利用易于获取的基于金鸡纳生物碱的 NNP 配体，开发了铱催化剂对 α-卤化酮的不对称氢化。通过该协议，各种 α-氯苯乙酮、杂环噻吩基和呋喃基底物，甚至溴酮完全转化为所需的手性卤代醇。( R )- 和 ( S )- 手性卤代醇都可以通过改变手性配体 NNP 的构型来制备，分别具有高达 99.6% ee（对映体过量）和 98.8% ee。此外，有效地进行了克级实验。

  DOI：

  10.1021/acs.joc.2c02109

文献信息

• Preparation of enantiomerically enriched aromatic β-hydroxynitriles and halohydrins by ketone reduction with recombinant ketoreductase KRED1-Pglu
  作者：Martina L. Contente、Immacolata Serra、Francesco Molinari、Raffaella Gandolfi、Andrea Pinto、Diego Romano

  DOI：10.1016/j.tet.2016.05.027

  日期：2016.7

  A NADPH-dependent benzil reductase (KRED1-Pglu) was used as recombinant enzyme for catalysing the reduction of different functionalised ketones. The reactions were carried out in the presence of a catalytic amount of NADP+ and an enzyme-coupled transformation (oxidation of glucose catalysed by glucose dehydrogenase), for regenerating the cofactor and thus driving the reaction to completion. KRED1-Pglu

  NADPH依赖的苯甲酰还原酶（KRED1-Pglu）被用作重组酶，用于催化不同功能化酮的还原。反应在催化量的NADP +存在下进行酶偶联转化（葡萄糖脱氢酶催化的葡萄糖氧化），用于再生辅因子，从而驱动反应完成。KRED1-Pglu具有出色的通用性，能够在不同的pH值下还原不同的β-酮腈和α-卤代酮。值得注意的是，根据底物的性质，KRED1-Pglu可用于高效，清洁的酶促还原反应，避免了由于培养基pH引起的副反应。还原通常以高对映选择性发生，从而可以高产率制备对映体富集的β-羟基腈和卤代醇。在所有情况下，减少的立体化学结果均遵循所谓的Prelog规则。
• The Ir-Catalyzed Asymmetric Hydrogenation of α-Halogenated Ketones Utilizing Cinchona-Alkaloid-Derived NNP Ligand to Produce (<i>R</i>)- and (<i>S</i>)-Halohydrins
  作者：Qian Chen、Hao Sun、Linlin Li、Jie Tian、Qian Xu、Nana Ma、Li Li、Lin Zhang、Chun Li

  DOI：10.1021/acs.joc.2c02109

  日期：2022.12.2

  hydrogenation of α-halogenated ketones with iridium catalyst was developed, utilizing easily accessed cinchona-alkaloid-based NNP ligands. Various α-chloroacetophenones, heterocyclic thienyl and furanyl substrates, and even bromoketones were completely converted to the desired chiral halohydrins by this protocol. Both (R)- and (S)-chiral halohydrins can be prepared by changing the configurations of the chiral

  利用易于获取的基于金鸡纳生物碱的 NNP 配体，开发了铱催化剂对 α-卤化酮的不对称氢化。通过该协议，各种 α-氯苯乙酮、杂环噻吩基和呋喃基底物，甚至溴酮完全转化为所需的手性卤代醇。( R )- 和 ( S )- 手性卤代醇都可以通过改变手性配体 NNP 的构型来制备，分别具有高达 99.6% ee（对映体过量）和 98.8% ee。此外，有效地进行了克级实验。
• Solvent and in situ catalyst preparation impacts upon Noyori reductions of aryl-chloromethyl ketones: application to syntheses of chiral 2-amino-1-aryl-ethanols
  作者：Steven P. Tanis、Bruce R. Evans、James A. Nieman、Timothy T. Parker、Wendy D. Taylor、Steven E. Heasley、Paul M. Herrinton、William R. Perrault、Richard A. Hohler、Lester A. Dolak、Matthew R. Hester、Eric P. Seest

  DOI：10.1016/j.tetasy.2006.07.017

  日期：2006.8

  As part of medicinal chemistry efforts we found it necessary to develop general syntheses of highly enantiomerically enriched 1-aryl-2-chloroethanols and 1-aryl-2-methylaminoethanols. A survey of literature methods suggested that a truly general approach had not yet been reported, encouraging us to undertake the development of such a methodology. This study describes the design, development, and reduction to practice of a general synthesis of chiral 1-aryl-2-chloroethanols and the transformation of these entities to highly enantiomerically enriched 1-aryl-2-methylaminoethanols. Of particular importance were observations of the impact of solvent and the method of catalyst preparation on the yield and enantiomerical excess of chlorohydrins prepared via Noyori transfer hydrogenations of aryl-chloromethyl ketones. (c) 2006 Elsevier Ltd. All rights reserved.
• Cinchona-Alkaloid-Derived NN Ligands and Achiral Phosphines for Iridium-Catalyzed Asymmetric Hydrogenation of Heteroaromatic and α-Chloroheteroaryl Ketones
  作者：Jie Tian、Xin Meng、Hao Sun、Qian Chen、Qian Xu、Pinli Dai、Linlin Li、Lin Zhang、Chun Li

  DOI：10.1021/acs.joc.3c00786

  日期：2023.7.7

  ived NN ligands bearing alkyl substituents on chiral nitrogen atoms was described. Iridium catalysts containing new chiral NN ligands and achiral phosphines were effective for the asymmetric hydrogenation of heteroaromatic ketones, which afforded corresponding alcohols in up to 99.9% ee. The same protocol was applicable to the asymmetric hydrogenation of α-chloroheteroaryl ketones. Most importantly

  描述了手性氮原子上带有烷基取代基的金鸡纳生物碱衍生的 NN 配体的简明合成。含有新型手性 NN 配体和非手性膦的铱催化剂可有效地进行杂芳酮的不对称氢化，得到相应的醇，其 ee 高达 99.9%。相同的方案适用于α-氯杂芳基酮的不对称氢化。最重要的是，即使在1 MPa的H 2下，2-乙酰噻吩和2-乙酰呋喃的克级不对称氢化反应也能顺利进行。