ethyl 2-methoxy-4-(4-methoxyphenyl)-6-methyl-1,4-dihydropyrimidine-5-carboxylate | 1187376-67-5

• 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: ethyl 2-methoxy-4-(4-methoxyphenyl)-6-methyl-1,4-dihydropyrimidine-5-carboxylate
• 英文别名: ethyl 6-methyl-2-methoxy-4-(4-methoxyphenyl)-1,4-dihydropyrimidine-5-carboxylate
• CAS: 1187376-67-5
• 化学式: C₁₆H₂₀N₂O₄
• 分子量: 304.346
• InChiKey: XSFVUYZWRCXXDE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  22
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  69.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  ethyl 2-methoxy-4-(4-methoxyphenyl)-6-methyl-1,4-dihydropyrimidine-5-carboxylate 在 potassium carbonate 、 eosin Y bis(tetrabutyl ammonium salt) 作用下， 以 甲醇 、 水 为溶剂， 以80%的产率得到ethyl 2-methoxy-4-(4-methoxyphenyl)-6-methylpyrimidine-5-carboxylate
  参考文献：
  名称：

  Synthesis of 2-substituted pyrimidines and benzoxazoles via a visible-light-driven organocatalytic aerobic oxidation: enhancement of the reaction rate and selectivity by a base

  摘要：

  利用有机光催化剂藻红Y双(四丁基铵盐)(TBA-藻红Y)和廉价氧化剂分子氧，已经实现了各种2-取代二氢嘧啶和酚亚胺的高效可见光驱动光催化氧化反应。在碱的辅助下，从底物二氢嘧啶或酚亚胺到TBA-藻红Y激发态的显著增强的光诱导电子转移，使得空气氧化能够选择性地生成2-(甲硫基)嘧啶或2-芳基苯并噁唑。

  DOI：

  10.1039/c4gc00337c
• 作为产物：
  描述：

  O-甲基异脲 半硫酸盐 、 乙酰乙酸乙酯 、 4-甲氧基苯甲醛 在 碳酸氢钠 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 ethyl 2-methoxy-4-(4-methoxyphenyl)-6-methyl-1,4-dihydropyrimidine-5-carboxylate
  参考文献：
  名称：

  Synthesis of 2-substituted pyrimidines and benzoxazoles via a visible-light-driven organocatalytic aerobic oxidation: enhancement of the reaction rate and selectivity by a base

  摘要：

  利用有机光催化剂藻红Y双(四丁基铵盐)(TBA-藻红Y)和廉价氧化剂分子氧，已经实现了各种2-取代二氢嘧啶和酚亚胺的高效可见光驱动光催化氧化反应。在碱的辅助下，从底物二氢嘧啶或酚亚胺到TBA-藻红Y激发态的显著增强的光诱导电子转移，使得空气氧化能够选择性地生成2-(甲硫基)嘧啶或2-芳基苯并噁唑。

  DOI：

  10.1039/c4gc00337c

文献信息

• Synthesis and pharmacological investigation of 3-(substituted 1-phenylethanone)-4-(substituted phenyl)-1, 2, 3, 4-tetrahydropyrimidine-5-carboxylates
  作者：R.V. Chikhale、R.P. Bhole、P.B. Khedekar、K.P. Bhusari

  DOI：10.1016/j.ejmech.2009.02.021

  日期：2009.9

  Fifteen new ethyl 6-methyl-2-methoxy-3-(substituted 1-phenylethanone)4-(substituted phenyl)-1, 2, 3, 4-tetrahydropyrimidine-5-carboxylates (6a-o) have been synthesized in a two step reaction. In first step ethyl acetoacetate, s-methylisourea and appropriate benzaldehydes reacted in a single step reaction to obtain ethyl 6-methyl-2-methoxy-4-(substituted phenyl)-1, 4-dihydropyrimidine-5-carboxylates (4a-e). Second step involves synthesis of reaction between substituted phenacyl bromides and 1-4-dihydropyrimidine-5-carboxylates (6a-o). Their structures are confirmed by IR, (1)H NMR, mass and elemental analyses. The compounds were tested for anti hypertensive activity by non-invasive tail-cuff, and evaluated by carotid artery cannulation method for determining the diastolic blood pressure. Hypertension was induced by DOCA-salt. Anti-inflammatory activity was carried out by carrageenan induced rat-paw oedema method. Test compounds 6b, 6c, 6e, 6f, 6j, 6h, 6k, 6l, 6m, 6n and 6o exerted comparative antihypertensive activity at 10 mg/kg dose level compared to nifedipine. Compounds 6j, 6m and 6o showed excellent results on evaluation by direct method. Test compounds 6a-6h, 6l, 6m, 6n and 6o exerted moderate to comparative anti-inflammatory activity at the 100 mg/kg dose level compared to indomethacin. Their further investigation for analgesic activity and acute ulcerogenesis was carried out, compounds 6m, 6f, 6k, 6o showed excellent to good analgesic activity and low ulcerogenic activity. (C) 2009 Elsevier Ltd. All rights reserved
• Synthesis of 2-substituted pyrimidines and benzoxazoles via a visible-light-driven organocatalytic aerobic oxidation: enhancement of the reaction rate and selectivity by a base
  作者：Lin Wang、Zhi-Gang Ma、Xiao-Jing Wei、Qing-Yuan Meng、Deng-Tao Yang、Shao-Fu Du、Zi-Fei Chen、Li-Zhu Wu、Qiang Liu

  DOI：10.1039/c4gc00337c

  日期：——

  An efficient visible-light-driven photocatalytic oxidation of various 2-substituted dihydropyrimidines and phenolic imines has been achieved using an organic photocatalyst eosin Y bis(tetrabutyl ammonium salt) (TBA-eosin Y) and inexpensive oxidant molecular oxygen. With the aid of a base, significantly enhanced photoinduced electron transfer from substrates dihydropyrimidines or phenolic imines to the excited state of TBA-eosin Y has enabled the aerobic oxidation to yield 2-(methylthio)pyrimidines or 2-arylbenzoxazoles selectively.

  利用有机光催化剂藻红Y双(四丁基铵盐)(TBA-藻红Y)和廉价氧化剂分子氧，已经实现了各种2-取代二氢嘧啶和酚亚胺的高效可见光驱动光催化氧化反应。在碱的辅助下，从底物二氢嘧啶或酚亚胺到TBA-藻红Y激发态的显著增强的光诱导电子转移，使得空气氧化能够选择性地生成2-(甲硫基)嘧啶或2-芳基苯并噁唑。
• Elemental steps of the thermodynamics of dihydropyrimidine: a new class of organic hydride donors
  作者：Fan-kun Meng、Xiao-qing Zhu

  DOI：10.1039/c6ob02195f

  日期：——

  25 Dihydropyrimidine derivatives, a new class of organo-hydrides, were designed and synthesized by the Biginelli reaction. For the first time, the thermodynamic driving forces of the six elemental steps to obtain a hydride in acetonitrile were determined by isothermal titration and electrochemical methods, respectively. The effects of molecular structures and substituents on these thermodynamic parameters

  通过Biginelli反应设计并合成了25种新型的有机氢化物二氢嘧啶衍生物。首次分别通过等温滴定和电化学方法确定了在乙腈中获得氢化物的六个基本步骤的热力学驱动力。研究了分子结构和取代基对这些热力学参数的影响，发现了一些有趣的结构-反应关系。无论是热力学和动力学的研究表明，从二氢嘧啶的氢化物转移至9- phenylxanthylium（PhXn + CLO 4 - ）倾向于协同机制。