ethyl 2-diazo-3-hydroxy-4-methylpentanoate | 38491-54-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 2-diazo-3-hydroxy-4-methylpentanoate
• 英文别名: 2-Diazonio-1-ethoxy-3-hydroxy-4-methylpent-1-en-1-olate
• CAS: 38491-54-2
• 化学式: C₈H₁₄N₂O₃
• 分子量: 186.211
• InChiKey: GCJMHDXPYTYUNH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  48.5
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl 2-diazo-3-hydroxy-4-methylpentanoate 在 calcium hydride 、 三氟化硼乙醚 作用下， 生成 ethyl 4-methylpent-2-ynoate
  参考文献：
  名称：

  Wenkert,E.; McPherson,C.A., Synthetic Communications, 1972, vol. 2, p. 331 - 334

  摘要：

  DOI：
• 作为产物：
  描述：

  重氮乙酸乙酯 、 异丁醛 在 KF/CP NPs 作用下， 以 neat (no solvent) 为溶剂， 反应 6.0h， 以52%的产率得到ethyl 2-diazo-3-hydroxy-4-methylpentanoate
  参考文献：
  名称：

  KF/纳米斜发沸石催化醛与重氮乙酸乙酯的醇醛型反应

  摘要：

  纳米斜发沸石 (KF/CP NPs) 上负载的氟化钾被用作一种优异的催化体系，用于在无溶剂条件下醛与重氮乙酸乙酯的直接醇醛型缩合。各种α-重氮羰基衍生物在较短的反应时间内以良好到极好的收率制备。

  DOI：

  10.1007/s10562-017-2158-6

文献信息

• Synthesis of α-diazo-β-hydroxyesters through a one-pot protocol by phase-transfer catalysis: application to enantioselective aldol-type reaction and diastereoselective synthesis of α-amino-β-hydroxyester derivatives
  作者：Kazuya Hasegawa、Shigeru Arai、Atsushi Nishida

  DOI：10.1016/j.tet.2005.11.028

  日期：2006.2

  The one-pot synthesis of α-diazo-β-hydroxyesters from sodium azide under phase-transfer-catalyzed conditions has been achieved. This protocol includes three different chemical transformations promoted by a single catalyst in each step to give products in good to excellent yields. The reaction was applied to a catalytic asymmetric aldol-type reaction using α-diazoesters with aldehydes in the presence

  在相转移催化条件下，已经可以从叠氮化钠一锅法合成α-重氮-β-羟基酯。该方案包括在每个步骤中由一种催化剂促进的三种不同的化学转化，以产生具有良好收率的优良产品。在手性季铵盐存在下，使用α-重氮酸酯与醛将反应应用于催化不对称的醛醇缩醛型反应，并得到ee高达81％的产物。还描述了产物向手性α-氨基-β-羟基酯衍生物的非对映选择性转化。
• Development of the Enantioselective Addition of Ethyl Diazoacetate to Aldehydes: Asymmetric Synthesis of 1,2-Diols
  作者：Barry M. Trost、Sushant Malhotra、Philipp Koschker、Pascal Ellerbrock

  DOI：10.1021/ja206995s

  日期：2012.2.1

  A novel synthetic strategy toward the asymmetric synthesis of vicinal diols bearing a tertiary center is presented. The method encompasses the dinuclear Mg-catalyzed asymmetric addition of ethyl diazoacetate into several aldehydes, oxidation of the diazo functionality, and diastereoselective alkyl transfer of various organometallics into the resulting chiral β-hydroxy-α-ketoesters to afford a diverse

  提出了一种新的合成策略，用于不对称合成带有三级中心的邻二醇。该方法包括双核 Mg 催化重氮乙酸乙酯不对称加成到几种醛中，重氮官能团的氧化，以及各种有机金属的非对映选择性烷基转移到所得的手性 β-羟基-α-酮酯中，以提供不同范围的 1,2 -高产率、非对映选择性和手性转移的二醇。
• An efficient and convenient aldol addition of acyldiazomethane with aldehydes promoted by MgI2 etherate
  作者：Xiaoqiang Xie、Weipeng Qi、Xinzhe Sun、Xingxian Zhang

  DOI：10.1515/mgmc-2017-0006

  日期：2017.1.28

  Abstract The aldol addition of acyldiazomethane with aromatic aldehydes, vinyl aldehyde and aliphatic aldehydes was carried out efficiently in the presence of MgI2 etherate and iPr2EtN (DIPEA) using untreated reagent-grade CH2Cl2 under atmospheric conditions in good to excellent yields. Iodide counterion and a non-coordinating reaction media (i.e. CH2Cl2) are among the critical factors for the unique

  摘要 在 MgI2 醚合物和 iPr2EtN (DIPEA) 的存在下，使用未经处理的试剂级 CH2Cl2 在大气条件下，以良好至极好的收率有效地进行酰基重氮甲烷与芳香醛、乙烯基醛和脂肪醛的羟醛加成。碘化物反离子和非配位反应介质（即 CH2Cl2）是该反应系统独特反应性的关键因素。
• tert-BuOK-Catalyzed condensation of ethyl diazoacetate to aldehydes and palladium-catalyzed 1,2-hydrogen migration for the synthesis of β-ketoesters under solvent-free conditions
  作者：Shufeng Chen、Fang Yuan、Haiying Zhao、Baoguo Li

  DOI：10.1039/c3ra41920g

  日期：——

  A mild and convenient method for the condensation of ethyl diazoacetate (EDA) with aldehydes catalyzed by tert-BuOK under solvent-free conditions was developed. The corresponding α-diazo-β-hydroxy esters were further converted into β-ketoesters through palladium-catalyzed 1,2-hydrogen migration under neat conditions. The two-step transformation exemplifies a simple method for the efficient and green

  一种温和方便的冷凝方法 重氮乙酸乙酯开发了叔丁基醚在无溶剂条件下催化的具有乙醛的乙二胺（EDA）。在纯净条件下，通过钯催化的1,2-氢迁移，将相应的α-重氮-β-羟基酯进一步转化为β-酮酸酯。两步转化例举了一种简单高效的绿色合成β-酮酸酯的方法。
• One-pot synthesis of α-diazo-β-hydroxyesters under phase-transfer catalysis and application to the catalytic asymmetric aldol reaction
  作者：Shigeru Arai、Kazuya Hasegawa、Atsushi Nishida

  DOI：10.1016/j.tetlet.2003.11.083

  日期：2004.1

  The one-pot (three steps) synthesis of α-diazo-β-hydroxyesters from tosyl chloride under phase-transfer catalysis is described. The catalytic asymmetric aldol reaction between a diazoester and aldehydes was also investigated and gave moderate to good enantioselectivity.

  描述了在相转移催化下由甲苯磺酰氯一锅（三步）合成α-重氮-β-羟基酯。还研究了重氮酯与醛之间的催化不对称醛醇缩合反应，并给出了中等至良好的对映选择性。