dimethyl 2-<(ethylthio)methyl>pyrimidine-4,5-dicarboxylate | 143034-55-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: dimethyl 2-<(ethylthio)methyl>pyrimidine-4,5-dicarboxylate
• 英文别名: Dimethyl 2-(ethylsulfanylmethyl)pyrimidine-4,5-dicarboxylate；dimethyl 2-(ethylsulfanylmethyl)pyrimidine-4,5-dicarboxylate
• CAS: 143034-55-3
• 化学式: C₁₁H₁₄N₂O₄S
• 分子量: 270.309
• InChiKey: NYOWPPAJLKSQPH-UHFFFAOYSA-N

物化性质

• 沸点：
  345.4±32.0 °C(Predicted)
• 密度：
  1.257±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  18
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  104
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  dimethyl 2-<(ethylthio)methyl>pyrimidine-4,5-dicarboxylate 在 镍 作用下， 以 甲醇 为溶剂， 以82%的产率得到dimethyl 2-methylpyrimidine-4,5-dicarboxylate
  参考文献：
  名称：

  1,3-Diaza-1,3-butadienes. Synthesis and Conversion into Pyrimidines by [4π + 2π] Cycloaddition with Electron Deficient Acetylenes. Synthetic Utility of 2-(Trichloromethyl)pyrimidines¹

  摘要：

  Methods have been devised to generate 1H-1,3-diaza-1,3-butadienes bearing a leaving group at position-4 in latent, masked, and unprotected forms. A hallmark of these azadienes is that they undergo thermal [4 pi + 2 pi] cycloaddition reactions with electron deficient acetylenes to give adducts which are aromatized to pyrimidine derivatives under the reaction conditions. Thus, 1-(methoxycarbonyl)-3-acylamidines 17 on beating in solution are converted in situ into the 1,3-diaza-1,3-dienes 18 and/or 19 which react with dimethyl acetylenedicarboxylate (DMAD) to produce the pyrimidines 20. The 1-Boc-1,3-diaza-1,3-dienes 24 are masked forms of the LH-dienes inasmuch as they react with DMAD under relatively mild conditions to give the dihydropyrimidine adducts 25, which are easily detectable by H-1 NMR spectroscopy, and which aromatize to pyrimidines 26 at higher temperatures. The 4-methylthio compounds 31 and 33, and the 2-(trichloromethyl) compounds 37, are isolable, relatively stable, 1H-1,3-diaza-1,3-butadienes, These easily prepared compounds react with electron deficient acetylenes under mild conditions to provide the pyrimidines 20, 34, and 38, respectively, in fair to excellent yields. The 2-(trichloromethyl)pyrimidines 38 are very useful precursors of a wide variety of other 2-substituted pyrimidines 46-52.

  DOI：

  10.1021/jo952106w
• 作为产物：
  描述：

  dimethyl 2-(trichloromethyl)pyrimidine-4,5-dicarboxylate 、 乙硫醇钠 在 乙硫醇 作用下， 以 四氢呋喃 为溶剂， 以90%的产率得到dimethyl 2-<(ethylthio)methyl>pyrimidine-4,5-dicarboxylate
  参考文献：
  名称：

  Synthesis of pyrimidines from 2-trichloromethyl-4-dimethylamino-1,3-diaza-1,3-butadienes and electron deficient acetylenes

  摘要：

  2-Trichloromethyl-4-dimethylamino-1,3-diaza-1,3-butadienes(3), prepared from trichloroacetamidine(1) and amide acetals 2, readily react with electron deficient acetylenes 4 to give 2-trichloromethylpyrimidines 5.

  DOI：

  10.1016/s0040-4039(00)92660-1

文献信息

• 1,3-Diaza-1,3-butadienes. Synthesis and Conversion into Pyrimidines by [4π + 2π] Cycloaddition with Electron Deficient Acetylenes. Synthetic Utility of 2-(Trichloromethyl)pyrimidines¹
  作者：Angel Guzmán、Moisés Romero、Francisco X. Talamás、Rene Villena、Robert Greenhouse、Joseph M. Muchowski

  DOI：10.1021/jo952106w

  日期：1996.1.1

  Methods have been devised to generate 1H-1,3-diaza-1,3-butadienes bearing a leaving group at position-4 in latent, masked, and unprotected forms. A hallmark of these azadienes is that they undergo thermal [4 pi + 2 pi] cycloaddition reactions with electron deficient acetylenes to give adducts which are aromatized to pyrimidine derivatives under the reaction conditions. Thus, 1-(methoxycarbonyl)-3-acylamidines 17 on beating in solution are converted in situ into the 1,3-diaza-1,3-dienes 18 and/or 19 which react with dimethyl acetylenedicarboxylate (DMAD) to produce the pyrimidines 20. The 1-Boc-1,3-diaza-1,3-dienes 24 are masked forms of the LH-dienes inasmuch as they react with DMAD under relatively mild conditions to give the dihydropyrimidine adducts 25, which are easily detectable by H-1 NMR spectroscopy, and which aromatize to pyrimidines 26 at higher temperatures. The 4-methylthio compounds 31 and 33, and the 2-(trichloromethyl) compounds 37, are isolable, relatively stable, 1H-1,3-diaza-1,3-butadienes, These easily prepared compounds react with electron deficient acetylenes under mild conditions to provide the pyrimidines 20, 34, and 38, respectively, in fair to excellent yields. The 2-(trichloromethyl)pyrimidines 38 are very useful precursors of a wide variety of other 2-substituted pyrimidines 46-52.
• Synthesis of pyrimidines from 2-trichloromethyl-4-dimethylamino-1,3-diaza-1,3-butadienes and electron deficient acetylenes
  作者：Angel Guzmán、Moisés Romero、Francisco X. Talamás、Joseph M. Muchowski

  DOI：10.1016/s0040-4039(00)92660-1

  日期：1992.6

  2-Trichloromethyl-4-dimethylamino-1,3-diaza-1,3-butadienes(3), prepared from trichloroacetamidine(1) and amide acetals 2, readily react with electron deficient acetylenes 4 to give 2-trichloromethylpyrimidines 5.