5-(2,4-dimethoxybenzylidene)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione | 61853-42-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5-(2,4-dimethoxybenzylidene)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione
• 英文别名: 5-[(2,4-Dimethoxyphenyl)methylidene]-1,3-dimethyl-1,3-diazinane-2,4,6-trione
• CAS: 61853-42-7
• 化学式: C₁₅H₁₆N₂O₅
• mdl: MFCD00181626
• 分子量: 304.302
• InChiKey: GZGFCZFGQSZBIR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  76.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  5-(2,4-dimethoxybenzylidene)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione 在 溶剂黄146 、 锌 作用下， 以96%的产率得到5-(2,4-Dimethoxy-benzyl)-1,3-dimethyl-pyrimidine-2,4,6-trione
  参考文献：
  名称：

  巴比妥酸的单C-烷基化和单C-苄基化，通过锌/酸还原酰基，亚苄基和亚烷基巴比妥酸酯中间体

  摘要：

  通过系统地研究反应条件，开发了用于获得大量取代的5-烷基和5-苄基巴比妥酸的非常有效的制备方法。该过程包括两步准备，其中第二步是还原锌粉/酸。对于制备5-烷基巴比妥酸酯，第一步是制备5-酰基或5-亚烷基巴比妥酸酯。如果5-苄基巴比妥酸酯是目标产物，则第一步包括制备5-亚苄基。无论第一步的性质如何，所有反应的合成产率均约为90％，而分离和纯化仅涉及结晶。

  DOI：

  10.1016/s0040-4039(03)00111-4
• 作为产物：
  描述：

  1,3-二甲基巴比妥酸 、 2,4-二甲氧基苯甲醛 以 溶剂黄146 为溶剂， 生成 5-(2,4-dimethoxybenzylidene)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione
  参考文献：
  名称：

  巴比妥酸的单C-烷基化和单C-苄基化，通过锌/酸还原酰基，亚苄基和亚烷基巴比妥酸酯中间体

  摘要：

  通过系统地研究反应条件，开发了用于获得大量取代的5-烷基和5-苄基巴比妥酸的非常有效的制备方法。该过程包括两步准备，其中第二步是还原锌粉/酸。对于制备5-烷基巴比妥酸酯，第一步是制备5-酰基或5-亚烷基巴比妥酸酯。如果5-苄基巴比妥酸酯是目标产物，则第一步包括制备5-亚苄基。无论第一步的性质如何，所有反应的合成产率均约为90％，而分离和纯化仅涉及结晶。

  DOI：

  10.1016/s0040-4039(03)00111-4

文献信息

• Synthesis of spirobarbiturate-pyrrolidinones <i>via</i> a domino aza-Michael/S_N2 cyclization of barbiturate-derived alkenes with <i>N</i>-alkoxy α-haloamides
  作者：Chuan-Chuan Wang、Jing Zhou、Zhi-Wei Ma、Xiao-Pei Chen、Ya-Jing Chen

  DOI：10.1039/c9ob01992h

  日期：——

  A highly efficient domino aza-MIRC (Michael Induced Ring Closure) reaction between barbiturate-derived alkenes and N-alkoxy α-haloamides has been achieved in moderate to excellent yields. This reaction proceeds smoothly under mild conditions via a domino aza-Michael addition/intramolecular SN2 sequence, providing a practical tool in the synthesis of bioactive molecules spirobarbiturate-3-pyrrolidinones

  巴比妥酸酯衍生的烯烃与N-烷氧基α-卤代酰胺之间的高效多米诺氮杂-MIRC（迈克尔诱导的闭环）反应以中等至极好的收率实现。该反应在温和条件下通过多米诺氮杂-迈克尔加成/分子内SN2序列顺利进行，为合成生物活性分子螺巴比妥酸酯-3-吡咯烷酮提供了实用工具。
• Synthesis of a novel tetracationic acidic organic salt based on DABCO and its applications as catalyst in the Knoevenagel condensation reactions in water
  作者：Azim Ziyaei Halimehjani、Vahid Barati、Mahshad Karimi

  DOI：10.1080/00397911.2019.1570268

  日期：2019.3.4

  Abstract Synthesis of a novel tetracationic acidic organic salt based on DABCO containing two sulfonic acid groups in the skeleton and four hydrogensulfate groups as counterion is described. Its catalytic efficiency in the Knoevenagel condensation of aldehydes with active cyclic methylene compounds in water is investigated. While 2,2'-(phenylmethylene)bis(3-hydroxy-5,5-dimethylcyclohex-2-enone) derivatives

  摘要 描述了一种基于 DABCO 的新型四阳离子酸性有机盐的合成，该盐在骨架中含有两个磺酸基团和四个硫酸氢基团作为抗衡离子。研究了其在醛与活性环状亚甲基化合物在水中的 Knoevenagel 缩合中的催化效率。虽然在醛与二甲酮的反应中以 40-98% 的分离产率获得了 2,2'-（苯基亚甲基）双（3-羟基-5,5-二甲基环己-2-烯酮）衍生物，但相应的 Knoevenagel 加合物在使用 1,3-二甲基巴比妥酸的产率为 85-95%。此外，首次制备并表征了基于 DABCO 的聚阳离子有机盐聚合物。图形概要
• Urotropine–bromine promoted synthesis of functionalized oxaspirotricyclic furopyrimidines via a domino Knoevenagel condensation/Michael addition/α-bromination/Williamson cycloetherification sequence in water
  作者：Mohammad Bagher Teimouri、Peyman Akbari-Moghaddam、Mahnaz Motaghinezhad

  DOI：10.1016/j.tet.2013.06.030

  日期：2013.8

  5′-pyrimidine] derivatives has been developed by a one-pot pseudo three-component domino coupling of aromatic aldehydes and (thio)barbituric acids in the presence of urotropine–bromine (UB) complex in water at room temperature. The reaction sequence consists of an initial Knoevenagel condensation of aromatic aldehydes with (thio)barbituric acids, followed by Michael addition of the second equivalent of

  通过芳香醛和（硫代）的一锅式伪三组分多米诺偶联，已开发出一种有效，安全且简便的途径来官能化螺[furo [2,3- d ]嘧啶-6,5'-嘧啶]衍生物室温下在水中存在乌托品-溴（UB）配合物时的巴比妥酸。该反应顺序由芳族醛与（硫代）巴比妥酸的最初的Knoevenagel缩合组成，然后第二个当量的（硫代）巴比妥酸衍生物的迈克尔加成，然后由UB催化的Williamson环醚化提供产物。
• A Mechanistic Approach to Liquid‐Assisted Mechanochemical Synthesis of 5‐Aryl/Spiro‐[1,2,4]‐triazolidine‐3‐thiones
  作者：Anurag Dutta、Raktim Abha Saikia、Ashim Jyoti Thakur

  DOI：10.1002/ejoc.202101472

  日期：2022.9.13

  Room temperature, Liquid assisted grinding was used for the synthesis 5-aryl/spiro-[1,2,4]-triazolidine-3-thiones. This protocol is a catalyst-free and atom economic process bearing wide substrate scope and the isolation of products is chromatography free. It shows an efficient application of mechanochemical synthesis and also exemplifies green chemistry.

  室温下，液体辅助研磨用于合成5-芳基/螺-[1,2,4]-三唑烷-3-硫酮。该协议是一个无催化剂和原子经济的过程，具有广泛的底物范围，产品的分离是无色谱的。它展示了机械化学合成的有效应用，也体现了绿色化学。
• “On-water” catalyst-free, one-pot synthesis of quaternary centered and spiro-tetrahydrothiophene-barbiturate hybrids
  作者：Sakkani Nagaraju、Kota Sathish、Banoth Paplal、Dhurke Kashinath

  DOI：10.1016/j.tetlet.2017.06.029

  日期：2017.7

  A green and efficient method have been developed for the synthesis of quaternary centered and spiro-barbiturate-tetrahydrothiophene hybrids via Knoevenagel condensation,1,4-thia-Michael and intramolecular Aldol reactions using "on water" concept under catalyst-free conditions. Systematic studies were carried out to find the role of the water and total reaction concentration (0.086 M) to promote the reaction in two steps (one-pot). The use of water as a reaction medium, catalyst-free conditions, broad substrate scope, one-pot approach for the creation of quaternary centered and spiro molecules are the advantages of this method. (C) 2017 Elsevier Ltd. All rights reserved.