ethyl 1-ethyl-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate | 67092-67-5

• 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 1-ethyl-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
• 英文别名: 1-ethyl-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester；ethyl 3-ethyl-4-methyl-2-oxo-6-phenyl-1,6-dihydropyrimidine-5-carboxylate
• CAS: 67092-67-5
• 化学式: C₁₆H₂₀N₂O₃
• 分子量: 288.346
• InChiKey: IKPQNNODBNSOTF-UHFFFAOYSA-N

物化性质

• 熔点：
  118 °C(Solv: dichloromethane (75-09-2))
• 沸点：
  473.8±45.0 °C(Predicted)
• 密度：
  1.129±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  21
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  58.6
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  溴乙烷 、 6-甲基-2-氧代-4-苯基-1,2,3,4-四氢-5-嘧啶羧酸乙酯 在 sodium hydroxide 、 四丁基硫酸氢铵 作用下， 以 水 为溶剂， 以87%的产率得到ethyl 1-ethyl-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
  参考文献：
  名称：

  N1-Alkylated 3,4-dihydropyrimidine-2(1H)-ones: Convenient one-pot selective synthesis and evaluation of their calcium channel blocking activity

  摘要：

  It has been found that selective N1-alkylation of 3,4-dihydropyrimidine-2(1H)-ones can be achieved under solvent-less, mild phase transfer catalytic (PTC) conditions with tetrabutylammonium hydrogen sulfate and 50% aqueous NaOH as the catalyst and base, respectively. The procedure is tolerant to substitutional variation at key diversity points on the pyrimidinone moiety. (C) 2008 Elsevier Masson SAS All rights reserved.

  DOI：

  10.1016/j.ejmech.2008.10.002

文献信息

• Selective N1-Alkylation of 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones Using Mitsunobu-Type Conditions
  作者：C. Oliver Kappe、Doris Dallinger

  DOI：10.1055/s-2002-34881

  日期：——

  The regioselective N1-alkylation of 3,4-dihydropyrimidin-2(1H)-ones via Mitsunobu reaction is reported. Using the highly reactive Mitsunobu coupling reagent combination N,N,N′,N′-tetramethylazodicarboxamide/tributylphosphine (TMAD-TBP) and a set of primary alcohols a small library of N1-alkylated dihydropyrimidones is obtained in good to excellent yields.

  报道了通过 Mitsunobu 反应实现 3,4-二氢嘧啶-2(1H)-酮的 N1-烷基选择性烷基化。使用高活性的 Mitsunobu 偶联试剂组合 N,N,N',N'-四甲基偶氮二羧酰胺/三丁基膦（TMAD-TBP）以及一系列伯醇，获得了产率良好至优异的一系列 N1-烷基化二氢嘧啶酮的小型化合物库。
• (C₅H₆N₄O)(C₅H₅N₄O)₃(C₅H₄N₄O)[Bi₂Cl₁₁]Cl₂as a simple and efficient catalyst in Biginelli reaction
  作者：Xiang Zhang、Xiaoyu Gu、Yuhua Gao、Shipeng Nie、Hongfei Lu

  DOI：10.1002/aoc.3590

  日期：2017.4

  A highly efficient and facile procedure for the one‐pot three‐component synthesis of 3,4‐dihydropyrimidin‐2‐(1H)ones/thiones from the one‐pot condensation of aldehyde, β‐dicarbonyl compound and urea/thiourea was developed. The methodology is applicable to a wide range of substrates with high yield in the presence of (C5H6N4O)(C5H5N4O)3(C5H4N4O)[Bi2Cl11]Cl2. The complex is an air‐stable, environmentally

  开发了一种高效，简便的方法，该方法可通过醛，β-二羰基化合物和尿素/硫脲的一锅缩合反应一锅三组分合成3,4-二氢嘧啶-2-（1 H）酮/硫酮。该方法适用于（C 5 H 6 N 4 O）（C 5 H 5 N 4 O）3（C 5 H 4 N 4 O）[Bi 2 Cl 11 ] Cl 2。该络合物是一种对空气稳定，对环境友好且可回收的催化剂，可以有效催化Biginelli反应。该催化剂具有高催化效率和低催化剂载量，并且可以循环十次而活性损失很小。
• Cerous <i>p</i>-Toluenesulfonate as an Efficient and Recyclable Catalyst for the Synthesis of <i>N</i>1-Substituted-4-aryl-3,4-dihydropyrimidin-2(1<i>H</i>)-ones
  作者：Min Wang、Hongxu Jiang、Shun Zhang、He Pan

  DOI：10.1080/00304948.2018.1525672

  日期：2018.9.3

  agents and a1aantagonists. Since the first straightforward synthetic method for DHPMs was reported by Biginelli in 1893, many improved protocols were developed. Not only new catalysts and reaction conditions were explored but also some novel reactive species were formed. The scope of the Biginelli reaction extended to various building blocks, so a large number of multifunctional pyrimidine derivatives with

  由于杂环上的六个功能点，二氢嘧啶酮 (DHPM) 具有广泛的合成重要性。DHPMs 还具有多种生物和药物活性，如钙通道阻滞剂、抗高血压剂和 a1a 拮抗剂。自从 1893 年 Biginelli 报告了第一个直接的 DHPM 合成方法以来，开发了许多改进的协议。不仅探索了新的催化剂和反应条件，而且形成了一些新的反应物种。Biginelli 反应的范围扩展到各种构建模块，因此获得了大量具有重要生物学特性的多功能嘧啶衍生物。其中，N1 取代的 DHPMs 也具有重要的生物活性和区域选择性。然而，关于 DHPM 的 N1-烷基化的参考文献很少，而且它们在产率、有毒试剂和反应条件方面都有局限性。尿素上的取代基主要限于 Me 和 Et。这鼓励我们开发一种新颖有效的方法来合成更多 N1 取代的 DHPM。作为耐水路易斯酸催化剂，金属磺酸盐被认为在合成化学中具有广泛的应用前景。它们高效、无毒并可重复使用。作为我们在金属磺酸盐催化的
• N1-Alkylated 3,4-dihydropyrimidine-2(1H)-ones: Convenient one-pot selective synthesis and evaluation of their calcium channel blocking activity
  作者：Kamaljit Singh、Divya Arora、Elizabeth Poremsky、Jazmyne Lowery、Robert S. Moreland

  DOI：10.1016/j.ejmech.2008.10.002

  日期：2009.5

  It has been found that selective N1-alkylation of 3,4-dihydropyrimidine-2(1H)-ones can be achieved under solvent-less, mild phase transfer catalytic (PTC) conditions with tetrabutylammonium hydrogen sulfate and 50% aqueous NaOH as the catalyst and base, respectively. The procedure is tolerant to substitutional variation at key diversity points on the pyrimidinone moiety. (C) 2008 Elsevier Masson SAS All rights reserved.