methyl (4E)-5-(4-methoxyphenyl)-2-diazo-3-oxopent-4-enoate | 1446109-51-8

• 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: methyl (4E)-5-(4-methoxyphenyl)-2-diazo-3-oxopent-4-enoate
• CAS: 1446109-51-8
• 化学式: C₁₃H₁₂N₂O₄
• 分子量: 260.249
• InChiKey: VMJXUYZPBFCCFV-VMPITWQZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.12
• 重原子数：
  19.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  89.0
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  methyl (4E)-5-(4-methoxyphenyl)-2-diazo-3-oxopent-4-enoate 、 1-(叔丁基二甲基硅氧基)-1-甲氧基乙烯 在 scandium tris(trifluoromethanesulfonate) 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以94%的产率得到dimethyl 5-(4-methoxyphenyl)-2-diazo-3-oxoheptane-1,7-dioate
  参考文献：
  名称：

  Diazoacetoacetate Enones for the Synthesis of Diverse Natural Product-like Scaffolds

  摘要：

  Diazoacetoacetate enones are a new class of Michael acceptors that enable the efficient construction of natural product-like scaffolds. Through their Michael addition reactions, including those with silyl enol ethers, indoles, pyrroles, and amines, delta-functionalized diazoacetoacetates are formed in high yield and with overall operational efficiency. Subsequent catalytic dinitrogen extrusion reactions provide access to a diverse series of natural product-like carbo- and heterocyclic ring systems in only three steps from commercial materials.

  DOI：

  10.1021/ol4015199
• 作为产物：
  描述：

  methyl 3-oxo-4-(triphenylphosphoranylidene)butanoate 、 4-甲氧基苯甲醛 在 三乙烯二胺 、 sodium hydride 、 4-乙酰氨基苯磺酰叠氮 、 溶剂黄146 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.0h， 以67%的产率得到methyl (4E)-5-(4-methoxyphenyl)-2-diazo-3-oxopent-4-enoate
  参考文献：
  名称：

  Diazoacetoacetate Enones for the Synthesis of Diverse Natural Product-like Scaffolds

  摘要：

  Diazoacetoacetate enones are a new class of Michael acceptors that enable the efficient construction of natural product-like scaffolds. Through their Michael addition reactions, including those with silyl enol ethers, indoles, pyrroles, and amines, delta-functionalized diazoacetoacetates are formed in high yield and with overall operational efficiency. Subsequent catalytic dinitrogen extrusion reactions provide access to a diverse series of natural product-like carbo- and heterocyclic ring systems in only three steps from commercial materials.

  DOI：

  10.1021/ol4015199

文献信息

• Sc(OTf)3-Catalyzed [3+2]-Cycloaddition of Diazoacetoacetate Enones and N-Aryl Nitrones: Diastereoselective Synthesis of Functionalized Isoxazolidines with Three Contiguous Stereogenic Centers
  作者：Xichen Xu、Yingjun Zhao、Di Wu

  DOI：10.1055/s-0041-1737804

  日期：2022.5

  A catalytic [3+2]-cycloaddition using Sc(OTf)3 as a Lewis acid catalyst is developed. This catalytic 1,3-dipolar cycloaddition dia­stereoselectively transforms diazoacetoacetate enones and N-aryl nitrones into highly functionalized isoxazolidines bearing three contiguous chiral centers. The feasibility of the uncatalyzed 1,3-dipolar cycloaddition is postulated by DFT calculations and substantiated

  开发了使用Sc(OTf) 3作为路易斯酸催化剂的催化[3+2]-环加成反应。这种催化的 1,3-偶极环加成非对映选择性将重氮乙酰乙酸烯酮和N-芳基硝酮转化为具有三个连续手性中心的高度官能化的异恶唑烷。未催化的 1,3-偶极环加成的可行性由 DFT 计算假设并通过实验证实。
• Rh2(esp)2-Catalyzed Redox/Cycloaddition Cascade of Diazoaceto­acetate Enones with N-Methyl Nitrones: Diastereoselective Synthesis of β-Lactams with Two Adjacent Chiral Centers
  作者：Xichen Xu、Yingjun Zhao、Rujie Xu、Zhengqing Xu

  DOI：10.1055/s-0040-1719883

  日期：2022.5

  employing Rh2(esp)2 as the catalyst, a reaction cascade operates by reducing an N-methyl nitrone to the corresponding N-methyl imine in the presence of a first molecule of the diazoacetoacetate enone. A second molecule of the diazoacetoacetate enone sensing a change in the reaction medium undergoes a Wolff rearrangement to afford a vinyl ketene. This vinyl ketene then reacts with the in situ generated

  开发了一种 Rh2(esp)2 催化的高度功能化 β-内酰胺的非对映选择性合成。通过使用Rh2(esp)2作为催化剂，反应级联通过在重氮乙酰乙酸烯酮的第一分子存在下将N-甲基硝酮还原为相应的N-甲基亚胺而进行。感测反应介质变化的重氮乙酰乙酸烯酮的第二分子经历沃尔夫重排以提供乙烯基乙烯酮。然后该乙烯基乙烯酮与原位生成的 N-甲基亚胺反应，非对映选择性地提供具有两个连续立体中心的 β-内酰胺。还报道了将该方法扩展到由 Rh2(esp)2 催化的 PMB 保护的亚胺和重氮乙酰乙酸烯酮的 [2+2]-环加成。