dimethyl 2-phenyl-6-methylpyrimidine-4,5-dicarboxylate | 61416-99-7

• 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-phenyl-6-methylpyrimidine-4,5-dicarboxylate
• 英文别名: 6-methyl-2-phenyl-pyrimidine-4,5-dicarboxylic acid dimethyl ester；4,5-Pyrimidinedicarboxylic acid, 6-methyl-2-phenyl-, dimethyl ester；dimethyl 6-methyl-2-phenylpyrimidine-4,5-dicarboxylate
• CAS: 61416-99-7
• 化学式: C₁₅H₁₄N₂O₄
• 分子量: 286.287
• InChiKey: DKWVXOFBBFSUIX-UHFFFAOYSA-N

物化性质

• 熔点：
  87 °C(Solv: hexane (110-54-3); benzene (71-43-2))
• 沸点：
  345.2±42.0 °C(Predicted)
• 密度：
  1.227±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  21
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  78.4
• 氢给体数：
  0
• 氢受体数：
  6

安全信息

• 海关编码：
  2933599090

反应信息

• 作为产物：
  描述：

  N-Boc-benzenecarboximidamide 以 四氢呋喃 、 甲苯 为溶剂， 反应 5.0h， 生成 dimethyl 2-phenyl-6-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

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.