普瑞巴林杂质80 | 53439-96-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 普瑞巴林杂质80
• 英文名称: (S)-(-)-isopropyl 2-hydroxy-2-phenylacetate
• 英文别名: propan-2-yl (2S)-2-hydroxy-2-phenylacetate
• CAS: 53439-96-6
• 化学式: C₁₁H₁₄O₃
• 分子量: 194.23
• InChiKey: SCJJMBMUZTUIJU-JTQLQIEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  普瑞巴林杂质80 在 potassium carbonate 、 三乙胺 、 potassium iodide 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 生成
  参考文献：
  名称：

  Synthesis of Novel New 2-(2-(4-((3,4-Dihydro-4-oxo-3-aryl quinazolin-2-yl)methyl)piperazin-1-yl)acetoyloxy)-2-phenyl Acetic Acid Esters

  摘要：

  Stereoselective diazotization of (S)-2-amino-2-phenyl acetic acid (L-phenyl glycine) (4) with NaNO2 in 6% H2SO4 in a mixture of acetone and water gave optically pure (S)-2-hydroxy-2-phenyl acetic acid (L-mandelic acid) (5). Esterification, gave (S)-2-hydroxy-2-phenyl acetic acid esters (6). The latter was treated with chloroacetyl chloride in the presence of triethylamine (TEA) in dichloromethane (DCM) to yield (S)-2-chloroacetyloxy phenyl acetic acid ester (2). In another sequence, the reaction of 2-(chloromethyl)-3-arylquinazolin-4(3H)-one (9) treated with N-Boc piperazine, followed by deprotection of the Boc group, to obtain 3-aryl-2-((piperazin-1-yl)methyl) quinazolin-4(3H)-one (3). Reaction of 2 with 3 in the presence of K2CO3 and KI gave the title compound, 2-(2-(4-((3,4-dihydro-4-oxo-3-arylquinazolin-2-yl)methyl)piperazin-1-yl) acetoyloxy)-2-phenyl acetic acid esters (1). The structures of all the new compounds obtained in the present work are supported by spectral and analytical data.

  DOI：

  10.1080/00397910902735381
• 作为产物：
  描述：

  3'-甲基苯乙酮 在 selenium(IV) oxide 、 C₄₉H₇₆N₄O₄ 、 碘 、 aluminum tri-tert-butoxide 、 potassium carbonate 、 yttrium(III) trifluoromethanesulfonate 作用下， 以 1,4-二氧六环 、 氯仿 、 水 、 异丙醇 、 甲苯 为溶剂， 反应 120.0h， 生成 普瑞巴林杂质80
  参考文献：
  名称：

  手性N，N'-二氧化物/ Y（OTf）3配合物诱导的乙二酸酯的催化不对称Meerwein-Ponndorf-Verley还原。

  摘要：

  乙醛酸酯的不对称Meerwein-Ponndorf-Verley（MPV）还原是首次通过N，N'-dioxide / Y（OTf）3配合物与烷氧基铝和分子筛（MSs）作为关键添加剂实现的。获得了多种旋光性α-羟基酯，具有优异的结果。根据实验提出了可能的反应机理。

  DOI：

  10.1039/c7cc00273d

文献信息

• A Highly Efficient and Enantioselective Intramolecular Cannizzaro Reaction under TOX/Cu(II) Catalysis
  作者：Pan Wang、Wen-Jie Tao、Xiu-Li Sun、Saihu Liao、Yong Tang

  DOI：10.1021/ja409859x

  日期：2013.11.13

  An asymmetric intramolecular Cannizzaro reaction of aryl and alkyl glyoxals with alcohols has been realized with an unprecedented high level of enantioselectivity, on the basis of a newly developed congested TOX ligand and a gradual liberation protocol of active glyoxals from glyoxal monohydrates. Preliminary results suggested a mechanism of enantioselective addition of alcohols to glyoxals contributing

  基于新开发的拥挤 TOX 配体和活性乙二醛从乙二醛一水合物中逐渐释放的方案，芳基和烷基乙二醛与醇的不对称分子内 Cannizzaro 反应以前所未有的高水平对映选择性实现。初步结果表明，除了半缩醛中间体的动态动力学拆分之外，醇对映选择性加成到乙二醛的机制对立体选择性贡献最大。
• Enantio- and chemoselective Brønsted-acid/Mg(ⁿBu)₂ catalysed reduction of α-keto esters with catecholborane
  作者：Dieter Enders、Bianca A. Stöckel、Andreas Rembiak

  DOI：10.1039/c4cc00427b

  日期：——

  The first enantio- and chemoselective Bronsted-acid catalysed reduction of alpha-keto esters with catecholborane has been developed. The alpha-hydroxy esters were obtained under mild reaction conditions in virtually quantitative yields and excellent enantioselectivities. With slight modifications both enantiomers can be obtained without any loss of selectivity.

  已开发出第一对映体和化学选择性布朗斯台德酸催化的儿茶酚硼烷还原α-酮酯。α-羟基酯是在温和的反应条件下以实际上定量的产率和优异的对映选择性而获得的。稍作修饰，即可得到两种对映体，而不会损失任何选择性。
• Scandium Triflate Catalyzed Transesterification of Carboxylic Esters
  作者：Christoph Schneider、Nicole Remme、Katharina Koschek

  DOI：10.1055/s-2007-967936

  日期：2007.2

  The direct transesterification of carboxylic esters is efficiently catalyzed with Sc(OTf)3 (10 mol%) in boiling alcoholic solvent. Methyl, ethyl, isopropyl, and allyl esters were prepared from a broad range of different substrates in high yields. The application of microwave irradiation led to significantly reduced reaction times.

  直接酯交换法在沸醇溶剂中以Sc(OTf)3（10摩尔%）高效催化下进行。甲基、乙基、异丙基和烯丙基酯从多种不同底物中以高收率制备。应用微波照射导致反应时间显著缩短。
• Chiral-at-Iron Catalyst: Expanding the Chemical Space for Asymmetric Earth-Abundant Metal Catalysis
  作者：Yubiao Hong、Lucie Jarrige、Klaus Harms、Eric Meggers

  DOI：10.1021/jacs.9b01352

  日期：2019.3.20

  A new class of chiral iron catalysts is introduced that contains exclusively achiral ligands with the overall chirality being the result of a stereogenic iron center. Specifically, iron(II) is cis-coordinated to two N-(2-pyridyl)-substituted N-heterocyclic carbene (PyNHC) ligands in a bidentate fashion in addition to two monodentate acetonitriles, and the dicationic complex is complemented by two hexafluorophosphate

  引入了一类新的手性铁催化剂，它仅包含非手性配体，整体手性是立体铁中心的结果。具体来说，除了两个单齿乙腈外，铁 (II) 还以双齿方式与两个 N-(2-吡啶基)-取代的 N-杂环卡宾 (PyNHC) 配体顺式配位，并且双阳离子配合物由两个六氟磷酸根离子补充. 根据 PyNHC 配体的螺旋扭曲，金属中心采用 Λ 或 Δ 绝对构型。重要的是，两个 PyNHC 配体在结构和构型上都是惰性的，而两个乙腈是不稳定的，允许不对称过渡金属催化。这通过对映选择性 Cannizzaro 反应（96% 产率，88% ee）和不对称 Nazarov 环化（89% 产率，>20：
• Dynamic kinetic resolution of (S)-mandelate-derived α-bromo esters in nucleophilic substitution and asymmetric syntheses of 3-substituted morpholin-2-ones
  作者：Yong Sun Park、Yoon Min Lee、Kyoung Hee Kang、Hye-Min Min、Hyun Jin Lim、Eun-Hyung Park

  DOI：10.3998/ark.5550190.0011.201

  日期：——

  Dynamic kinetic resolution of (S)-mandelate-derived α-bromo esters in nucleophilic substitution reaction has been investigated. Substitutions with various alkyl amine nucleophiles in the presence of TBAI and DIEA can provide various α-amino esters up to 81% yield and 97:3 dr. Also, the substitution of α-bromo esters with N-substituted 2-aminoethanol nucleophiles and following spontaneous cyclization

  已经研究了 (S)-扁桃酸衍生的 α-溴酯在亲核取代反应中的动态动力学拆分。在 TBAI 和 DIEA 存在下用各种烷基胺亲核试剂取代可以提供各种 α-氨基酯，产率高达 81% 和 97:3 dr。此外，用 N-取代的 2-氨基乙醇亲核试剂取代 α-溴酯并随后自发环化为高达 95:5 er 的 3-取代吗啉-2-酮的不对称合成提供了实用的方案。