ethyl 2-diazo-3-hydroxy-3-methyl-4-(methoxycarbonyl)butanoate | 1443778-65-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl 2-diazo-3-hydroxy-3-methyl-4-(methoxycarbonyl)butanoate
• CAS: 1443778-65-1
• 化学式: C₉H₁₄N₂O₅
• 分子量: 230.221
• InChiKey: AWYBWXDYCKMPFV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.47
• 重原子数：
  16.0
• 可旋转键数：
  5.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  109.23
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  ethyl 2-diazo-3-hydroxy-3-methyl-4-(methoxycarbonyl)butanoate 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 为溶剂， 反应 20.0h， 以33%的产率得到ethyl 4-diazo-3-methyl-4-(methoxycarbonyl)but-2-enoate
  参考文献：
  名称：

  Two-Stage Synthesis of 3-(Perfluoroalkyl)-Substituted Vinyldiazocarbonyl Compounds and Their Nonfluorinated Counterparts: A Comparative Study

  摘要：

  Two approaches for the synthesis of fluorinated (F) and nonfluorinated (H) 4-(alkoxycarbonyl)-substituted cis- and trans-vinyldiazocarbonyl compounds with substituents of variable stereoelectronic nature (H, Me, Ph, CF3, OTBS) at the C-3 atom of the vinyl double bond from the relevant 1,3-dicarbonyl compounds were compared: a pathway using the Wittig reaction followed by a diazo transfer reaction was most efficient for the synthesis of the H-vinyldiazocarbonyl compounds (total yields of up to 60%), while the yields of their F-analogues under similar conditions did not exceed 16-37%. An approach via diazo transfer followed by the Wittig reaction, in contrast, is more effective for the preparation of F-vinyldiazocarbonyl compounds (total yields 37-69%). The configuration of the resulting F-and H-vinyldiazocarbonyl compounds is evidently controlled by the steric bulk of the substituent at the C-3 atom of the vinyl double bond and, in addition, depends on the specific synthetic pathway.

  DOI：

  10.1055/s-0032-1318309
• 作为产物：
  描述：

  乙酰乙酸乙酯 在 3-nitrobenzenesulfonyl azide 、 三乙胺 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 4.83h， 生成 ethyl 2-diazo-3-hydroxy-3-methyl-4-(methoxycarbonyl)butanoate
  参考文献：
  名称：

  Two-Stage Synthesis of 3-(Perfluoroalkyl)-Substituted Vinyldiazocarbonyl Compounds and Their Nonfluorinated Counterparts: A Comparative Study

  摘要：

  Two approaches for the synthesis of fluorinated (F) and nonfluorinated (H) 4-(alkoxycarbonyl)-substituted cis- and trans-vinyldiazocarbonyl compounds with substituents of variable stereoelectronic nature (H, Me, Ph, CF3, OTBS) at the C-3 atom of the vinyl double bond from the relevant 1,3-dicarbonyl compounds were compared: a pathway using the Wittig reaction followed by a diazo transfer reaction was most efficient for the synthesis of the H-vinyldiazocarbonyl compounds (total yields of up to 60%), while the yields of their F-analogues under similar conditions did not exceed 16-37%. An approach via diazo transfer followed by the Wittig reaction, in contrast, is more effective for the preparation of F-vinyldiazocarbonyl compounds (total yields 37-69%). The configuration of the resulting F-and H-vinyldiazocarbonyl compounds is evidently controlled by the steric bulk of the substituent at the C-3 atom of the vinyl double bond and, in addition, depends on the specific synthetic pathway.

  DOI：

  10.1055/s-0032-1318309