(4R)-4-benzyl-3-[2-(2-methoxy-6-methylphenyl)ethynyl]-1,3-oxazolidin-2-one | 898827-22-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: (4R)-4-benzyl-3-[2-(2-methoxy-6-methylphenyl)ethynyl]-1,3-oxazolidin-2-one
• CAS: 898827-22-0
• 化学式: C₂₀H₁₉NO₃
• 分子量: 321.376
• InChiKey: ORANUGHJFVWXES-QGZVFWFLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  38.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (4R)-4-benzyl-3-[2-(2-methoxy-6-methylphenyl)ethynyl]-1,3-oxazolidin-2-one 在 二甲基二环氧乙烷 作用下， 以 丙酮 为溶剂， 反应 2.5h， 以82%的产率得到(R)-1-(4-benzyl-2-oxooxazolidin-3-yl)-2-(2-methoxy-6-methylphenyl)ethane-1,2-dione
  参考文献：
  名称：

  Synthesis of α-Keto-Imides via Oxidation of Ynamides

  摘要：

  A de novo preparation of alpha-keto-imides via ynamide oxidation is described. With a number of alkyne oxidation conditions screened, a highly efficient RuO2-NaIO4 mediated oxidation and a DMDO oxidation have been identified to tolerate a wide range of ynamide types. In addition to accessing a wide variety of a-keto-imides, the RuO2-NaIO4 protocol provides a novel entry to the vicinal tricarboryl motif via oxidation of push-pull ynamides, and imido acylsilanes from silyl-substituted ynamides. Chemoselective oxidation of ynamides containing olefins can be achieved by using DMDO, while the RuO2-NaIO4 protocol is not effective. These studies provide further support for the synthetic utility of ynamides.

  DOI：

  10.1021/jo8015067
• 作为产物：
  描述：

  、 (R)-4-苄基-2-噁唑烷酮 在 1,10-菲罗啉 、 copper(II) sulfate 作用下， 以 甲苯 为溶剂， 以91%的产率得到(4R)-4-benzyl-3-[2-(2-methoxy-6-methylphenyl)ethynyl]-1,3-oxazolidin-2-one
  参考文献：
  名称：

  铜（II）催化炔基溴化物作为Ynamides和通用合成酰胺化ž -Enamides。分子内酰胺化反应合成大环酰胺

  摘要：

  在此描述了用于将各种酰胺与炔基溴化物偶联的通用且有效的方法。这种新颖的酰胺化反应涉及使用五水合硫酸铜（II）和1,10-菲咯啉来指导sp-C-N键形成的催化方案，从而通过分子内酰胺化形成结构上多样的酰胺，包括大环酰胺。鉴于对酰胺化学的浓厚兴趣，这种原子经济的酰胺合成方法应引起有机合成界的进一步关注。

  DOI：

  10.1021/jo060230h

文献信息

• Rhodium(I)-Catalyzed [2 + 2 + 2] Cycloadditions of Ynamides in the Synthesis of Amide-Substituted Chiral Biaryls
  作者：Michael R. Tracey、Jossian Oppenheimer、Richard P. Hsung

  DOI：10.1021/jo061683p

  日期：2006.10.1

  Rhodium(I)-catalyzed [2 + 2 + 2] cycloadditions of sterically encumbered aryl-substituted ynamides with various diynes are described here. These cycloadditions provide the synthesis of an array of new chiral amide-substituted biaryls that can be useful in future chiral ligand designs.

  在此描述了铑（I）催化的，空间位阻的芳基取代的乙酰胺与各种二炔的[2 + 2 + 2]环加成反应。这些环加成提供了新的手性酰胺取代的联芳基阵列的合成，这些阵列可用于未来的手性配体设计中。
• A Rhodium(I)-Catalyzed Demethylation−Cyclization of <i>o-</i>Anisole-Substituted Ynamides in the Synthesis of Chiral 2-Amido Benzofurans
  作者：Jossian Oppenheimer、Whitney L. Johnson、Michael R. Tracey、Richard P. Hsung、Pei-Yuan Yao、Renhe Liu、Kang Zhao

  DOI：10.1021/ol0707362

  日期：2007.6.1

  A Rh(I)-catalyzed demethylation-cyclization sequence for a direct transformation of o-anisole-substituted ynamides to benzofurans is described here. The Ag salt functions synergistically with Rh(I) for the key demethylation step.
• Copper(II)-Catalyzed Amidations of Alkynyl Bromides as a General Synthesis of Ynamides and <i>Z</i>-Enamides. An Intramolecular Amidation for the Synthesis of Macrocyclic Ynamides
  作者：Xuejun Zhang、Yanshi Zhang、Jian Huang、Richard P. Hsung、Kimberly C. M. Kurtz、Jossian Oppenheimer、Matthew E. Petersen、Irina K. Sagamanova、Lichun Shen、Michael R. Tracey

  DOI：10.1021/jo060230h

  日期：2006.5.1

  method for the coupling of a wide range of amides with alkynyl bromides is described here. This novel amidation reaction involves a catalytic protocol using copper(II) sulfate-pentahydrate and 1,10-phenanthroline to direct the sp-C−N bond formation, leading to a structurally diverse array of ynamides including macrocyclic ynamides via an intramolecular amidation. Given the surging interest in ynamide chemistry

  在此描述了用于将各种酰胺与炔基溴化物偶联的通用且有效的方法。这种新颖的酰胺化反应涉及使用五水合硫酸铜（II）和1,10-菲咯啉来指导sp-C-N键形成的催化方案，从而通过分子内酰胺化形成结构上多样的酰胺，包括大环酰胺。鉴于对酰胺化学的浓厚兴趣，这种原子经济的酰胺合成方法应引起有机合成界的进一步关注。
• Synthesis of α-Keto-Imides via Oxidation of Ynamides
  作者：Ziyad F. Al-Rashid、Whitney L. Johnson、Richard P. Hsung、Yonggang Wei、Pei-Yuan Yao、Renhei Liu、Kang Zhao

  DOI：10.1021/jo8015067

  日期：2008.11.21

  A de novo preparation of alpha-keto-imides via ynamide oxidation is described. With a number of alkyne oxidation conditions screened, a highly efficient RuO2-NaIO4 mediated oxidation and a DMDO oxidation have been identified to tolerate a wide range of ynamide types. In addition to accessing a wide variety of a-keto-imides, the RuO2-NaIO4 protocol provides a novel entry to the vicinal tricarboryl motif via oxidation of push-pull ynamides, and imido acylsilanes from silyl-substituted ynamides. Chemoselective oxidation of ynamides containing olefins can be achieved by using DMDO, while the RuO2-NaIO4 protocol is not effective. These studies provide further support for the synthetic utility of ynamides.